Frymaster Fryer BIH52 User Manual

SERVICE MANUAL  
FRYMASTER MH52 AND BIH52 SERIES  
GAS FRYERS  
This equipment chapter is to be  
installed in the Fryer Section of the  
Equipment Manual.  
FOR YOUR SAFETY  
Do Not Store or use gasoline or other  
flammable vapors and liquids in the  
vicinity of this or any other appliance.  
MANUFACTURED  
BY  
FRYMASTER, L.L.C.  
P.O. BOX 51000  
SHREVEPORT, LOUISIANA 71135-1000  
PHONE: 1-318-865-1711  
TOLL FREE: 1-800-551-8633  
1-800-24 FRYER  
FAX: 1-318-219-7135  
Frymaster, L.L.C. 8700 Line Avenue 71106, 5489 Campus Drive 71129  
P.O. Box 51000, Shreveport, Louisiana 71135-1000  
TEL 318-865-1711 FAX (Parts) 318-219-7140 (Tech Support) 318-219-7135  
* 8 1 9 5 4J2UN3E 20*05  
SERVICE HOTLINE  
1-800-24-FRYER  
PRINTED IN THE UNITED STATES  
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NOTICE  
IF, DURING THE WARRANTY PERIOD, THE CUSTOMER USES A PART FOR THIS ENODIS  
EQUIPMENT OTHER THAN AN UNMODIFIED NEW OR RECYCLED PART PURCHASED  
DIRECTLY FROM FRYMASTER/DEAN, OR ANY OF ITS AUTHORIZED SERVICE CENTERS,  
AND/OR THE PART BEING USED IS MODIFIED FROM ITS ORIGINAL CONFIGURATION, THIS  
WARRANTY WILL BE VOID. FURTHER, FRYMASTER DEAN AND ITS AFFILIATES WILL NOT  
BE LIABLE FOR ANY CLAIMS, DAMAGES OR EXPENSES INCURRED BY THE CUSTOMER  
WHICH ARISE DIRECTLY OR INDIRECTLY, IN WHOLE OR IN PART, DUE TO THE  
INSTALLATION OF ANY MODIFIED PART AND/OR PART RECEIVED FROM AN  
UNAUTHORIZED SERVICE CENTER.  
NOTICE  
This appliance is intended for professional use only and is to be operated by qualified  
personnel only. A Frymaster/DEAN Factory Authorized Service Center (FASC) or other  
qualified professional should perform installation, maintenance, and repairs. Installation,  
maintenance, or repairs by unqualified personnel may void the manufacturer’s warranty.  
NOTICE  
This equipment must be installed in accordance with the appropriate national and local codes  
of the country and/or region in which the appliance is installed.  
NOTICE TO U.S. CUSTOMERS  
This equipment is to be installed in compliance with the basic plumbing code of the Building  
Officials and Code Administrators International, Inc. (BOCA) and the Food Service Sanitation  
Manual of the U.S. Food and Drug Administration.  
NOTICE  
Drawings and photos used in this manual are intended to illustrate operational, cleaning and  
technical procedures and may not conform to onsite management operational procedures.  
NOTICE TO OWNERS OF UNITS EQUIPPED WITH COMPUTERS  
U.S.  
This device complies with Part 15 of the FCC rules. Operation is subject to the following two  
conditions: 1) This device may not cause harmful interference, and 2) This device must  
accept any interference received, including interference that may cause undesired operation.  
While this device is a verified Class A device, it has been shown to meet the Class B limits.  
CANADA  
This digital apparatus does not exceed the Class A or B limits for radio noise emissions as  
set out by the ICES-003 standard of the Canadian Department of Communications.  
Cet appareil numerique n’emet pas de bruits radioelectriques depassany les limites de classe  
A et B prescrites dans la norme NMB-003 edictee par le Ministre des Communcations du  
Canada.  
WARNING  
To ensure the safe and efficient operation of the fryer and hood, the electrical plug for the  
120-volt line, which powers the hood, must be fully engaged and locked in its pin and sleeve  
socket.  
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DANGER  
Improper installation, adjustment, maintenance or service, and unauthorized alterations or  
modifications can cause property damage, injury, or death. Read the installation, operating,  
and service instructions thoroughly before installing or servicing this equipment. Only  
qualified service personnel may convert this appliance to use a gas other than that for which  
it was originally configured.  
DANGER  
No structural material on the fryer should be altered or removed to accommodate placement  
of the fryer under a hood. Questions? Call the Frymaster Dean Service Hotline at 1-800-  
551-8633.  
DANGER  
Adequate means must be provided to limit the movement of this appliance without depending  
upon the gas line connection. Single fryers equipped with legs must be stabilized by  
installing anchor straps. All fryers equipped with casters must be stabilized by installing  
restraining chains. If a flexible gas line is used, an additional restraining cable must be  
connected at all times when the fryer is in use.  
DANGER  
The front ledge of the fryer is not a step! Do not stand on the fryer. Serious injury can result  
from slips or contact with the hot oil.  
DANGER  
Do not store or use gasoline or other flammable liquids or vapors in the vicinity of this or any  
other appliance.  
DANGER  
Instructions to be followed in the event the operator smells gas or otherwise detects a gas  
leak must be posted in a prominent location. This information can be obtained from the local  
gas company or gas supplier.  
DANGER  
This product contains chemicals known to the state of California to cause cancer and/or birth  
defects or other reproductive harm.  
Operation, installation, and servicing of this product could expose you to airborne particles  
of glasswool or ceramic fibers, crystalline silica, and/or carbon monoxide. Inhalation of  
airborne particles of glasswool or ceramic fibers is known to the State of California to cause  
cancer. Inhalation of carbon monoxide is known to the State of California to cause birth  
defects or other reproductive harm.  
DANGER  
The crumb tray in fryers equipped with a filter system must be emptied into a fireproof  
container at the end of frying operations each day. Some food particles can spontaneously  
combust if left soaking in certain shortening material.  
WARNING  
Do not bang fry baskets or other utensils on the fryer’s joiner strip. The strip is present to  
seal the joint between the fry vessels. Banging fry baskets on the strip to dislodge  
shortening will distort the strip, adversely affecting its fit. It is designed for a tight fit and  
should only be removed for cleaning.  
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WARRANTY STATEMENT  
The following applies to equipment sold to domestic (U.S.) markets. International warranty  
provisions will vary depending upon the country in which the equipment is sold. See your dealer  
for specific warranty provisions applicable to your location. For all international warranties, the  
customer is responsible for freight and duty charges.  
Frymaster, L.L.C. makes the following limited warranties to the original purchaser only for this  
equipment and replacement parts:  
A. WARRANTY PROVISIONS - FRYERS  
1. Frymaster L.L.C. warrants all components against defects in material and workmanship for a  
period of one year.  
2. All parts, with the exception of the frypot, heating elements and fuses, are warranted for one  
year after installation date of fryer.  
3. If any parts, except fuses and filter O-rings, become defective during the first year after  
installation date, Frymaster will also pay straight-time labor costs to replace the part, plus up  
to 100 miles/160 km of travel (50 miles/80 km each way).  
B. WARRANTY PROVISIONS - FRYPOTS  
(Applies to fryers manufactured after December 1, 2003, only.)  
1. If a frypot develops a leak within ten years after installation, Frymaster will, at its option,  
either replace the complete battery or replace the frypot, allowing up to the maximum time  
per the Frymaster time allowance chart hours of straight-time labor plus up to 100 miles/160  
km of travel (50 miles/80 km each way) to change the frypot.  
2. This warranty is limited to fryers operating on natural or propane (LP) gas. Fryers that  
operate on manufactured gas (also known as town gas or high-hydrogen gas) have a lifetime  
frypot warranty, parts only.  
C. WARRANTY PROVISIONS – COMBUSTION CHAMBERS  
(Applies to fryers installed on or after November 1, 1994, only.)  
1. Frymaster L.L.C. warrants the combustion chambers against defective material or  
workmanship for a period of ten years from the original installation date, parts and labor.  
2. The combustion chamber consists of the infrared burners and the structural components to  
mount the burners. This warranty does not cover ancillary components, including the igniter,  
blower, high-limit thermostat, and temperature probe.  
3. This warranty is limited to fryers operating on natural or propane (LP) gas.  
i
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D. WARRANTY PROVISIONS - COOKING COMPUTER  
1. Frymaster L.L.C. warrants the M-2000 Cooking Computer against defective material or  
workmanship for a period of three years from the original installation date. If the unit fails  
within the first year, warranty will cover part, labor and handling. If the part fails the second  
year, warranty will cover part and handling only. Labor is charged to the store. The third  
year, warranty will cover the part only. No labor or handling will be covered.  
2. During this warranty period, Frymaster will, at its option, repair or replace a returned  
defective cooking computer with a new or factory rebuilt and functionally operative units.  
3. For replacement of defective computers under warranty, call your local Frymaster  
Authorized Service Center. All computers replaced under the Frymaster exchange program  
are covered by a one-year (parts only) warranty.  
E. PARTS RETURN  
All defective in-warranty parts must be returned to a Frymaster Authorized Factory Service  
Center within 60 days for credit. After 60 days, no credit will be allowed.  
F. WARRANTY EXCLUSIONS  
This warranty does not cover equipment that has been damaged due to misuse, abuse, alteration,  
or accident such as:  
improper or unauthorized repair (including any frypot which is welded in the field);  
failure to follow proper installation instructions and/or scheduled maintenance procedures as  
prescribed in your MRC cards. Proof of scheduled maintenance is required to maintain the  
warranty;  
improper maintenance;  
damage in shipment;  
abnormal use;  
removal, alteration, or obliteration of either the rating plate or the date code on the heating  
elements;  
operating the frypot without shortening or other liquid in the frypot;  
no fryer will be warranted under the ten-year program for which a proper start-up form has not  
been received.  
This warranty also does not cover:  
transportation or travel over 100 miles/160 km (50 miles/80 km each way), or travel over two  
hours;  
overtime or holiday charges;  
consequential damages (the cost of repairing or replacing other property which is damaged), loss  
of time, profits, use or any other incidental damages of any kind.  
There are no implied warranties of merchantability or fitness for any particular use or purpose.  
ii  
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BIH52 / MH52  
SERIES GAS FRYERS  
TABLE OF CONTENTS  
CHAPTER 1: Introduction  
1.1 General .............................................................................................................................. 1-1  
1.2 Safety Information............................................................................................................. 1-1  
1.3 Computer Information....................................................................................................... 1-2  
1.4 European Community (CE) Specific Information............................................................. 1-2  
CHAPTER 2: Installation Instrucitons  
2.1 General Installation Requirements .................................................................................... 2-1  
2.2 Caster/Leg Installation ...................................................................................................... 2-3  
2.3 Pre-Connection Preparations............................................................................................. 2-3  
2.4 Connections to Gas Line ................................................................................................... 2-5  
2.5 Converting to Another Gas Type ...................................................................................... 2-7  
2.6 Frypot Boil-Out ................................................................................................................. 2-8  
CHAPTER 3: Service Procedures, Troubleshooting and Wire Diagrams  
3.1 Functional Description ...................................................................................................... 3-1  
3.2 Accessing Fryers for Servicing ......................................................................................... 3-5  
3.3 Cleaning the Gas Valve Vent Tube................................................................................... 3-5  
3.4 Checking the Burner Manifold Gas Pressure.................................................................... 3-6  
3.5 Measuring Flame Current.................................................................................................. 3-8  
3.6 Replacing Fryer Components............................................................................................ 3-8  
3.6.1  
3.6.2  
3.6.3  
3.6.4  
3.6.5  
3.6.6  
3.6.7  
3.6.8  
3.6.9  
Replacing the Controller or the Controller Wiring Harness............................... 3-8  
Replacing the Temperature Probe or High-Limit Thermostat ........................... 3-9  
Replacing the Interface Board.......................................................................... 3-10  
Replacing an Ignition Module.......................................................................... 3-10  
Replacing an Ignitor Assembly........................................................................ 3-10  
Replacing or Cleaning a Combustion Air Blower............................................ 3-11  
Replacing a Gas Valve ..................................................................................... 3-14  
Replacing a Burner Assembly.......................................................................... 3-14  
Replacing the Frypot ........................................................................................ 3-15  
3.6.10 Replacing Frypot Insulation and/or Upper Burner Rails.................................. 3-17  
3.7 Troubleshooting and Problem Isolation .......................................................................... 3-21  
3.7.1  
3.7.2  
3.7.3  
3.7.4  
3.7.5  
3.7.6  
Ignition Failure................................................................................................. 3-22  
Improper Burner Function................................................................................ 3-23  
Improper Temperature Control ........................................................................ 3-24  
Recovery Time and the M100B “Rec Loc” Condition .................................... 3-25  
Filtration Malfunctions..................................................................................... 3-26  
Leakage ............................................................................................................ 3-29  
3.8 Troubleshooting Guides .................................................................................................. 3-29  
3.8.1  
3.8.2  
3.8.3  
Troubleshooting the 24 VAC Circuit ............................................................... 3-30  
Troubleshooting the Gas Valve........................................................................ 3-33  
Troubleshooting the Temperature Probe.......................................................... 3-34  
iii  
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BIH52 / MH52  
SERIES GAS FRYERS  
TABLE OF CONTENTS  
3.9 Probe Resistance Chart.................................................................................................... 3-35  
3.10 Simplified Wiring Diagrams ........................................................................................... 3-37  
3.11 Principle Wiring Connections ......................................................................................... 3-42  
3.12 Main Wiring Diagrams.................................................................................................... 3-43  
CHAPTER 4: Parts List  
4.1 Accessories........................................................................................................................ 4-1  
4.2 Cabinetry Components...................................................................................................... 4-2  
4.2.1  
4.2.2  
4.2.3  
4.2.4  
4.2.5  
4.2.6  
BIH152 and MH152 Cabinet Components ........................................................ 4-2  
BIH52 Cabinet Components .............................................................................. 4-4  
MH52 Cabinet Components............................................................................... 4-6  
BIH52/MH52 Cap N Splash, Fluecaps, Standoffs and Related Parts................ 4-9  
BIH52/MH52 Control Panel Frames and Topcaps .......................................... 4-11  
BIH52/MH52 Door Components ..................................................................... 4-12  
4.3 Combustion System, Frypot and Gas System Components............................................ 4-13  
4.3.1  
4.3.2  
4.3.3  
Blowers and Associated Parts .......................................................................... 4-13  
Ignition Sub-System Components.................................................................... 4-14  
Frypot Assembly Components ......................................................................... 4-15  
4.3.3.1 Full Vat Frypot Assembly Components .......................................... 4-15  
4.3.3.2 Dual Vat Frypot Assembly Components......................................... 4-17  
Service Frypot Kits........................................................................................... 4-19  
Gas Manifolds – Single BIH52/MH52 Units................................................... 4-20  
Gas Manifolds – BIH52/MH52 Multi-Fryer Units .......................................... 4-21  
Gas Valves, Gas Lines and Fittings.................................................................. 4-23  
4.3.4  
4.3.5  
4.3.6  
4.3.7  
4.4 Electronics....................................................................................................................... 4-25  
4.4.1  
4.4.2  
4.4.3  
4.4.4  
4.4.5  
Computers, Controllers and Associated Components...................................... 4-25  
Component Boxes ............................................................................................ 4-27  
Filter Box Components .................................................................................... 4-28  
Transformer Box Components ......................................................................... 4-29  
Wiring............................................................................................................... 4-31  
4.5 Oil Handling System Components.................................................................................. 4-34  
4.5.1  
Drain System Components............................................................................... 4-34  
4.5.1.1 Square Drain Sections and Components.......................................... 4-34  
4.5.1.2 Drain Valve Assemblies .................................................................. 4-35  
Filtration System Components ......................................................................... 4-37  
4.5.2.1 Filter Base Assemblies..................................................................... 4-37  
4.5.2.2 Filter Motor and Pump Plumbing .................................................... 4-39  
4.5.2.3 Filter Pan Assemblies and Associated Components........................ 4-41  
4.5.2.4 Rear Flush Oil Return Components................................................. 4-43  
4.5.2  
iv  
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CHAPTER 1: INTRODUCTION  
1.1  
General  
Read the instructions in this manual thoroughly before attempting to service this equipment. This  
manual covers all configurations of models MH52 and BIH52 fryers built since December 1995.  
Models designated MH52 do not have built-in filtration systems. Models designated BIH52 are  
equipped with FootPrint III built-in filtration systems.  
H52 Series fryers feature deep cold-zones and easy to clean open frypots. The fryers are controlled by  
multi-product cooking computers or optional thermostat controllers. Fryers in this series come in full  
or split-pot arrangements, and can be purchased as single units or grouped in batteries of up to five  
fryers.  
1.2  
Safety Information  
Before attempting to service this equipment, read the instructions in this manual thoroughly.  
Throughout this manual, you will find notations enclosed in double-bordered boxes similar to the ones  
below.  
CAUTION boxes contain information about actions or conditions that may cause or result in a  
malfunction of the system.  
CAUTION  
Example of a CAUTION box.  
WARNING boxes contain information about actions or conditions that may cause or result in  
damage to the system, and which may cause the system to malfunction.  
WARNING  
Example of a WARNING box.  
DANGER boxes contain information about actions or conditions that may cause or result in injury to  
personnel, and which may cause damage to your system and/or cause the system to malfunction.  
DANGER  
Hot cooking oil causes severe burns. Never attempt to move a fryer containing hot  
cooking oil or to transfer hot cooking oil from one container to another.  
Fryers in this series are equipped with automatic safety features:  
1. A high-limit thermostat causes the gas valve to close should the controlling thermostat fail or  
computer temperature probe fail.  
2. In BIH52 fryers, a safety switch built into the drain valve prevents the gas valve from opening  
with the drain valve even partially open.  
1-1  
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1.3  
Computer Information  
This equipment has been tested and found to comply with the limits for a Class A digital device,  
pursuant to Part 15 of the FCC rules. While this device is a verified Class A device, it has been shown  
to meet the Class B limits. These limits are designed to provide reasonable protection against harmful  
interference when the equipment is operated in a commercial environment. This equipment generates,  
uses and can radiate radio frequency energy and, if not installed and used in accordance with the  
instruction manual, may cause harmful interference to radio communications. Operation of the  
equipment in a residential area is likely to cause harmful interference in which case the user will be  
required to correct the interference at his own expense.  
The user is cautioned that any changes or modifications not expressly approved by the party  
responsible for compliance could void the user's authority to operate the equipment.  
If necessary, the user should consult the dealer or an experienced radio and television technician for  
additional suggestions.  
The user may find the following booklet prepared by the Federal Communications Commission  
helpful: "How to Identify and Resolve Radio-TV Interference Problems". This booklet is available  
from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4.  
1.4  
European Community (CE) Specific Information  
The European Community (CE) has established certain specific standards regarding equipment of this  
type. Whenever a difference exists between CE and non-CE standards, the information or instructions  
concerned are identified by means of shadowed boxes similar to the one below.  
CE Standard  
Example of box used to distinguish CE and  
Non-CE specific information.  
1-2  
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CHAPTER 2: INSTALLATION INSTRUCTIONS  
2.1  
General Installation Requirements  
NOTE: PROPER INSTALLATION IS ESSENTIAL FOR EFFICIENT, TROUBLE-FREE  
OPERATION OF YOUR FRYER. ANY UNAUTHORIZED ALTERATIONS MADE TO THIS  
EQUIPMENT WILL VOID THE FRYMASTER WARRANTY.  
Upon arrival, inspect the fryer carefully for visible or concealed damage. (See Shipping Damage  
Claim Procedure in Chapter 1.)  
CLEARANCE AND VENTILATION  
The fryer(s) must be installed with a 6” (150 mm) clearance at both sides and back when installed  
adjacent to combustible construction; no clearance is required when installed adjacent to noncom-  
bustible construction. A minimum of 24” (600 mm) clearance should be provided at the front of the  
fryer.  
One of the most important considerations of efficient fryer operation is ventilation. Make sure the  
fryer is installed so that products of combustion are removed efficiently, and that the kitchen ventila-  
tion system does not produce drafts that interfere with proper burner operation.  
The fryer flue opening must not be placed close to the intake of the exhaust fan, and the fryer must  
never have its flue extended in a “chimney” fashion. An extended flue will change the combustion  
characteristics of the fryer, causing longer recovery time. It also frequently causes delayed ignition.  
To provide the airflow necessary for good combustion and burner operation, the areas surrounding  
the fryer front, sides, and rear must be kept clear and unobstructed.  
Fryers must be installed in an area with an adequate air supply and adequate ventilation. Adequate  
distances must be maintained from the flue outlet of the fryer to the lower edge of the ventilation  
filter bank. Filters should be installed at an angle of 45º. Place a drip tray beneath the lowest edge of  
the filter. For U.S. installation, NFPA standard No. 96 states, “A minimum distance of 18 in. (450  
mm) should be maintained between the flue outlet and the lower edge of the grease filter.”  
Frymaster recommends that the minimum distance be 24 in. (600 mm) from the flue outlet to the  
bottom edge of the filter when the appliance consumes more than 120,000 BTU per hour.  
For installations in the United States, information on construction and installation of ventilating  
hoods can be found in the NFPA standard cited above. A copy of the standard may be obtained from  
the National Fire Protection Association, Battery March Park, Quincy, MA 02269.  
DANGER  
Do not attach an apron drainboard to a single fryer. The fryer may become unstable,  
tip over, and cause injury. The appliance area must be kept free and clear of com-  
bustible material at all times.  
2-1  
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NATIONAL CODE REQUIREMENTS  
The type of gas for which the fryer is equipped is stamped on the data plate attached to the inside of  
the fryer door. Connect a fryer stamped “NAT” only to natural gas, those stamped “PRO” only to  
propane gas, and those stamped “MFG” only to manufactured gas.  
Installation shall be made with a gas connector that complies with national and local codes, and,  
where applicable, CE codes. Quick-disconnect devices, if used, shall likewise comply with national,  
local, and, if applicable, CE codes.  
ELECTRICAL GROUNDING REQUIREMENTS  
All electrically operated appliances must be grounded in accordance with all applicable national and  
local codes, and, where applicable, CE codes. A wiring diagram is located on the inside of the fryer  
door. Refer to the rating plate on the inside of the fryer door for proper voltages.  
DANGER  
If this appliance is equipped with a three-prong (grounding) plug, it must be plugged  
directly into a properly grounded receptacle.  
Do not cut or remove the grounding prong from the plug.  
DANGER  
This equipment requires electrical power for operation.  
Place the gas control valve in the OFF position in case of a prolonged power outage.  
Do not attempt to use the equipment during a power outage.  
FCC COMPLIANCE  
The user is cautioned that any changes or modifications to Frymaster computers not expressly ap-  
proved by the party responsible for compliance could void the user’s authority to operate the equip-  
ment.  
Frymaster computers have been tested and found to comply with the limits for a Class A digital de-  
vice, pursuant to Part 15 of the FCC rules. While these devices are verified as Class A devices, they  
have been shown to meet the Class B limits. These limits are designed to provide reasonable protec-  
tion against harmful interference when the equipment is operated in a commercial environment. This  
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in  
accordance with the instruction manual, may cause harmful interference to radio communications.  
Operation of the equipment in a residential area is likely to cause harmful interference in which case  
the user will be required to correct the interference at his own expense.  
If necessary, the user should consult the dealer or an experienced radio and television technician for  
additional suggestions.  
2-2  
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The user may find the booklet “How to Identify and Resolve Radio-TV Interference Problems” help-  
ful. It is prepared by the Federal Communications Commission and is available from the U.S. Gov-  
ernment Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4.  
2.2  
Caster/Leg Installation  
Depending upon the specific configuration ordered, your fryer may have been shipped without in-  
stalled casters or legs. If casters or legs are installed, you may skip this section and proceed to sec-  
tion 2.3, Pre-Connection Preparations.  
If your fryer requires the installation of casters/legs, install them in accordance with the in-  
structions included in your accessory package.  
2.3  
Pre-Connection Preparations  
DANGER  
Do not connect fryer to gas supply before completing each step  
in this section.  
After the fryer has been positioned under the fry station exhaust hood, ensure the following has been  
accomplished:  
1. Adequate means must be provided to limit the movement of fryers without depending upon the  
gas line connections. If a flexible gas hose is used, a restraining cable must be connected at all  
times when the fryer is in use. The restraining cable and installation instructions are packed with  
the flexible hose in the accessories box that was shipped with your unit.  
2. Single unit fryers must be stabilized by installing restraining chains on fryers equipped with  
casters or anchor straps on fryers equipped with legs. Follow the instructions shipped with the  
casters/legs to properly install the chains or straps.  
3. Level the fryer, if necessary, by loosening the locking screw on the caster legs and rotating the  
leg to increase or decrease the exposed length. Verify that the fryer is at the proper height in the  
exhaust hood. Frymaster recommends that the minimum distance from the flue outlet to the bot-  
tom edge of the hood be 24 in. (600 mm) when the appliance consumes more than 120,000 BTU  
per hour.  
4. Test the fryer electrical system:  
a. Plug the fryer electrical cord(s) into a grounded electrical receptacle.  
b. Place the power switch in the ON position.  
For fryers equipped with thermostat controls, note the illumination of the power light and  
the heat light.  
For fryers having computers, note that the display reads LO- TEMP and the heat light  
comes on.  
If the store is equipped with a hood interlock system, the hood exhaust fan should be on.  
If not, the store hood interlock system is improperly wired and must be corrected.  
2-3  
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c. Place the fryer power switch in the OFF position. Verify that the power and heat lights are  
out, or that the display shows “OFF”.  
5. Refer to the data plate on the inside of the fryer door to determine if the fryer burner is config-  
ured for the proper type of gas before connecting the fryer quick-disconnect device or piping  
from the gas supply line.  
6. Verify the minimum and maximum gas supply pressures for the type of gas to be used in accor-  
dance with the accompanying tables.  
CE Standard  
for Incoming Gas Pressures  
for Fryers Manufactured After April 1999  
Orifice Diameter  
Regulator Pressure  
Pressure  
(mbar)(1)  
20  
Single  
Vat  
Dual  
Vat  
Single  
Vat  
Dual  
Vat  
Gas  
G20  
G25  
G30  
G31  
2 x 3.40 2 x 3.40  
7 mbar  
6.5 mbar  
9 mbar  
20 or 25  
2 x 3.40 2 x 3.40 10 mbar  
28/30 or 50 2 x 2.05 2 x 2.05 17 mbar  
37 or 50  
17 mbar  
2 x 2.05 2 x 2.05 20 mbar 18.5 mbar  
(1) mbar = 10.2 mm H2O  
CE Standard  
for Incoming Gas Pressures  
for Fryers Manufactured Through April 1999  
Orifice Diameter  
Regulator Pressure  
Pressure  
(mbar)(1)  
20  
Single  
Vat  
Dual  
Vat  
Single  
Vat  
Dual  
Vat  
Gas  
G20  
G25  
G31  
2 x 3.40 2 x 3.40  
7 mbar  
6.5 mbar  
9 mbar  
20 - 25  
37 - 50  
2 x 3.40 2 x 3.40 10 mbar  
2 x 2.05 2 x 2.05 20.2 mbar 18.5 mbar  
(1) mbar = 10.2 mm H2O  
Non-CE Standard  
for Incoming Gas Pressures  
Gas  
Minimum  
Maximum  
6" W.C.  
1.49 kPa  
14" W.C.  
3.48 kPa  
Natural  
14.93 mbar 34.84 mbar  
11" W.C.  
2.74 kPa  
14" W.C.  
3.48 kPa  
LP  
27.37 mbar 34.84 mbar  
2-4  
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2.4  
Connection to Gas Line  
The H52 Series has received the CE mark for the countries and gas categories indicated in the  
accompanying table. NOTE: The nominal heat input (Qn) is 21kW except for AT, DE, LU, and for  
category 3B/P under 50 mbar, which is 23kW.  
CE Approved Gas Categories by Country*  
COUNTRIES  
AUSTRIA (AT)  
CATEGORIES  
GAS  
G20  
G30, G31  
PRESSURE (mbar)  
20  
50  
II2H3B/P  
I2E(R)B  
I3+  
G20, G25  
G30, G31  
20, 25  
BELGIUM (BE)  
DENMARK (DK)  
28-30, 37  
G20  
20  
30  
20, 25  
28-30, 37  
20, 25  
50  
II2H3B/P  
II2Esi3+  
II2Esi3P  
II2H3B/P  
G30, G31  
G20, G25  
G30, G31  
G20, G25  
G31  
FRANCE (FR)  
G20  
20  
30  
20  
50  
FINLAND (FI)  
G30, G31  
G20, G25  
G30, G31  
II2ELL3B/P  
I3P  
GERMANY (DE)  
G31  
50  
G20  
G30, G31  
G20  
G30, G31  
G20  
G30, G31  
G20  
G30, G31  
G25  
20  
28-30, 37  
20  
28-30, 37  
20  
28-30, 37  
20  
GREECE (GR)  
ITALY (IT)  
II2H3+  
II2H3+  
II2H3+  
II2E3B/P  
II2L3P  
IRELAND (IE)  
LUXEMBOURG (LU)  
50  
25  
50  
25  
G31  
G25  
G30, G31  
NETHERLANDS (NL)  
II2L3B/P  
I3B/P  
30  
NORWAY (NO)  
G30, G31  
30  
G20  
G30, G31  
G20  
G30, G31  
G20  
G31  
G20  
G30, G31  
G20  
G30, G31  
20  
28-30, 37  
20  
28-30, 37  
20  
37, 50  
20  
30  
PORTUGAL (PT)  
II2H3+  
II2H3+  
II2H3P  
II2H3B/P  
II2H3+  
SPAIN (ES)  
SWEDEN (SE)  
20  
28-30, 37  
UNITED KINGDOM (GB)  
* H152-2 units are not approved for G30 (Butane) gas.  
The size of the gas line used for installation is very important. If the line is too small, the gas pres-  
sure at the burner manifold will be low. This may cause slow recovery and delayed ignition. Fry-  
master recommends the incoming gas supply line be a minimum of 1½” (38 mm) in diameter. Refer  
to the chart on the following page for the minimum sizes of connection piping.  
2-5  
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Gas Connection Pipe Sizes  
(Minimum incoming pipe size should be 1 1/2" (38 mm))  
4 or more  
Gas  
Natural  
Single Unit  
2 - 3 Units  
1" (25 mm) 1 1/4" (33 mm)  
1" (25 mm)  
1" (25 mm) 1 1/4" (33 mm) 1 1/2" (38 mm)  
units*  
3/4" (19 mm)  
Propane  
1/2" (13 mm) 3/4" (19 mm)  
Manufactured  
* For distances of more than 20 feet (6 m) and/or  
more than 4 fittings or elbows, increase the con-  
nection by one pipe size.  
Before connecting new pipe to your unit, the pipe must be thoroughly blown out to remove any for-  
eign particles. If these foreign particles get into the burner and controls, they will cause improper  
and sometimes dangerous operation.  
CE Standard  
Required airflow for the combustion air supply is 2m3/h per kW.  
1. Connect the quick-disconnect hose to the fryer quick-disconnect fitting under the front of the  
fryer and to the building gas line.  
NOTE: Some fryers are configured for a rigid connection to the gas supply line. These units are  
connected to the gas supply line at the rear of the unit.  
When using thread compound, use very small amounts on male threads only. Use a pipe thread  
compound that is not affected by the chemical action of LP gases (Loctite™ PST56765 Sealant is  
one such compound). DO NOT apply compound to the first two threads. This will ensure that  
the burner orifices and control valve do not become clogged.  
2. Open the gas supply to the fryer and check all piping, fittings, and gas connections for leaks. A  
soap solution should be used for this purpose.  
DANGER  
Never use matches, candles, or any other ignition source to check for leaks.  
If gas odors are detected, shut off the gas supply to the fryer  
at the main shut-off valve and contact the local gas company or an authorized  
service agency for service.  
3. Close the fryer drain valve and fill the frypot with water and boil-out solution to the bottom OIL-  
LEVEL line at the rear of the frypot. Light the fryer and perform the boil-out procedures that are  
described in the “Lighting Instructions” and “Boiling Out the Frypot” topics found in Chapter 3  
of this manual.  
2-6  
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WARNING  
“Dry-firing” your unit will cause damage to the frypot. Always ensure that melted  
shortening, cooking oil, or water and boil-out solution is in the frypot before firing  
your unit for any extended period.  
4. It is suggested that the burner manifold pressure be checked at this time by the local gas company  
or an authorized service agent. Refer to “Check Burner Manifold Pressure” on 3.4 of this manual  
for the proper procedure. The accompanying tables list the burner manifold gas pressures for the  
various gas types that can be used with this equipment.  
CE Standard  
CE Standard  
Burner Manifold Gas Pressures  
for Fryers Manufactured After April 1999  
Burner Manifold Gas Pressures  
for Fryers Manufactured Through April 1999  
Pressure (mbar)  
Pressure (mbar)  
Single  
Vat  
Dual  
Vat  
Single  
Vat  
Dual  
Vat  
Gas  
Gas  
Natural Gas Lacq  
Natural Gas Lacq  
7
7
7
10  
6,5  
9
(G20) under 20 mbar  
Natural Gas Groningue *  
(G25) under 25 mbar  
(G20) under 20 mbar  
Natural Gas Gronigue *  
(G25) under 25 mbar  
10  
10  
17  
20  
10  
10  
17  
20  
Natural Gas Groningue  
(G25) under 20 mbar  
Natural Gas Gronigue  
(G25) under 20 mbar  
10  
9
Butane  
(G30) at 28/30 or 50 mbar  
Butane  
(G30) at 28/30 or 50 mbar  
17  
16,5  
18,5  
Propane  
(G31) under 37 or 50 mbar  
Propane  
(G31) under 37 or 50 mbar  
20,2  
* Belgian G25 = 7,0 mbar (single or dual)  
* Belgian G25 = 7,0 mbar (single) or 6,5 (dual)  
Non-CE Standard  
Burner Manifold Gas Pressures  
Gas  
Pressure  
3" W.C.  
Natural  
0.73 kPa  
8.25" W.C.  
2.5 kPa  
Propane  
5. Check the programmed temperature or analog controller thermostat setting. (Refer to Chapter 3,  
Operating Instructions, for the setpoint programming instructions for your particular controller.)  
2.5  
Converting to Another Gas Type  
Your fryer is configured at the factory for either natural gas or propane (LP) gas. If you desire to  
switch from one type of gas to another, a gas conversion kit must be installed by a Factory  
Authorized Service Center technician.  
DANGER  
Switching to a different type of gas without installing the proper conversion kit may  
result in fire or explosion! NEVER attach your fryer to a gas supply for which it is  
not configured.  
2-7  
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H52 Series Fryers manufactured for Non-CE countries use different burners for each type gas. The  
burners in fryers built for Propane gas have a special gray-colored coating on the burner tiles to en-  
able them to withstand the higher caloric value of the Propane gas. Burners designed for use in Pro-  
pane units may be used in natural gas applications, but not vice versa.  
Non-CE Gas Conversion Kits  
Natural Gas to Propane (LP) Gas  
Full Vat: Part Number 826-1145  
Dual Vat: Part Number 826-1147  
Propane (LP) Gas to Natural Gas  
Full Vat: Part Number 826-1146  
Dual Vat: Part Number 826-1148  
Units manufactured for export to CE countries are equipped with “universal” burners that may be  
used with either natural (G20, G25) gas or Butane (G30) and Propane (G31) gasses.  
CE Gas Conversion Kits for Units with Gas Valve 810-1011  
G20 or G25 (Natural) to G30 or G31 Gas:  
Part Number 826-1196  
G30 or G31 to G20 or G25 (Natural) Gas:  
Part Number 826-1197  
CE GAS CONVERSION INSTRUCTIONS  
1. Between G20- and G25-type Natural Gas, adjust the gas pressure at the regulator. (Refer to the  
CE Standard Burner Manifold Gas Pressure Chart.) Do not change the orifice.  
2. Between a 2nd family (G20 or G25) and a 3rd family gas (G30 Butane or G31 Propane):  
a. Change the orifices.  
b. Change the gas valve spring (units with valve part number 810-1011only)  
c. Adjust the manifold pressure.  
3. Remove the rating plate and install a new one. Call your local service agency or KES for a new  
rating plate.  
4. If the destination language changes, replace the labels. Call your local service agency or KES for  
a label kit. The language of reference will be on the corner of the label.  
2.6  
Frypot Boil-Out  
Before the fryer is first used for cooking product, it should be boiled out to ensure that any residue  
from the manufacturing process has been eliminated.  
In addition, after the fryer has been in use for a period of time, a hard film of caramelized vegetable  
oil will form on the inside of the frypot. This film should be periodically removed by following the  
boil-out procedure.  
Refer to Fryers Maintenance Requirement Card (MRC) 14A for the boil-out procedure.  
2-8  
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CHAPTER 3: SERVICE PROCEDURES,  
TROUBLESHOOTING AND WIRING DIAGRAMS  
3.1  
Functional Description  
H52 Series fryers contain a welded stainless steel frypot that is directly heated by a high efficiency  
infrared burner system requiring approximately 43% less energy than conventional burners to cook  
the same volume.  
Self-contained combustion chambers (referred to as “burners”) are fitted into rails attached to the  
sides of the frypot, one on each side. Each combustion chamber is fitted with special ceramic tiles  
that are heated by the burning of a forced air/gas mixture. The tiles transfer their heat to the frypot  
by means of infrared radiation, providing much more constant and uniform heat dispersion over the  
surface of the frypot than do conventional burners. Because relatively less heat is lost to the atmos-  
phere in the process, compared to “open-burner” designs, less fuel is required to achieve and main-  
tain a given frypot temperature.  
In full-vat units, gas flow to both of the burners is regulated by one electromechanical gas valve. In  
dual-vat units, each burner has its own valve. All fryers in this series are equipped with 24VAC gas  
valve systems, and all are configured with electronic ignition.  
THE ELECTRONIC IGNITION SYSTEM  
An ignition module mounted in the component box or  
Inside the Ignition Module  
“shield” (located behind the control panel) is connected to  
an ignitor assembly at the burner. The ignition module  
performs three important functions: it provides an ignition  
Out to  
Gas Valve  
spark, supplies voltage to the gas valve, and proofs the  
To Alarm  
burner flame. The module contains a 4-second time delay  
circuit and a coil that activates the gas valve. Three designs  
25 V +  
are in use. The module used in Australian export units  
Coil  
resembles an interface board. A closed-box design is used  
in units built for the U.S. and other export markets. Before  
TD  
mid-2001, fryers (other than Australian) were equipped  
HV  
with two 807-1006 modules. Fryers built after late 2000 to  
GND  
mid-2001 are equipped with two 807-3365 (dual vat) or one  
807-3366 (full vat) module. Fryers built between late-2000  
Ignition Wire  
Flame Sensor  
and mid-2001 may have either configuration. Australian  
units continue to use two 807-2971 modules.  
The ignitor assembly consists of a spark plug, an enrichment tube, and a flame sensor.  
At start-up, the power switch is placed in the ON position, supplying approximately 12-volts DC to  
the heat control circuitry in the controller or computer and to one side of the heat relay coils on the  
interface board. If resistance in the temperature probe indicates the temperature in the frypot is  
below 180ºF (82ºC), the current flows through a melt cycle circuit where a timer switch alternately  
closes for 6 seconds and opens for 24 seconds. If the temperature is 180ºF (82ºC) or above, the  
current flows through a heat circuit, bypassing the timer switch. In either case, ground is supplied to  
the other leg of the heat relay coils, which then close electronic switches in the 24VAC circuit to  
3-1  
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provide current to the ignition module. Circuitry in the ignition module sends 24VAC to the gas  
valve via a normally closed high-limit switch (and, in BIH52 fryers, a normally closed drain safety  
switch). Simultaneously, the module causes the ignitor to spark for 4 seconds to light the burner. A  
flame sensor verifies the burner is lit by measuring the flow of microamps through the flame. If the  
burner does not light (or is extinguished), current to the ignition module is cut, the gas valve closes,  
and the ignition module “locks-out” until the power switch is turned off and then back on.  
A probe monitors the temperature in the frypot. When the programmed setpoint temperature is  
reached, resistance in the probe causes the heat cycle circuitry in the controller to cut off current flow  
through the heat relay. This in turn cuts off the 24VAC to the ignition module, causing the gas valve  
to close.  
H52 Series fryers may be equipped with solid-state analog controls, M100B computers, or M2000  
computers.  
All fryers in this series have an interface board located in the component box located behind the  
control panel.  
INTERFACE BOARDS  
The interface board provides a link between the controller/computer and the fryer’s individual com-  
ponents without requiring excessive wiring, and allows the controller to execute commands from one  
central point. The H52 Series of fryers has been in production since 1983. Consequently, servicers  
are likely to encounter several different interface board designs. Although the boards differ in ap-  
pearance, basic functioning and electrical connections are the same from one to another. In late-  
2000, a new, unfused, ignition module design was introduced. Consequently, an additional fuse was  
added to the design of interface board 806-3398 to compensate. The new, two-fuse board is P/N  
106-0386. With the exception of manufactured gas units, no matter what generation board is in the  
fryer now, if it becomes necessary to replace the board, either P/N 806-3398 or 106-0386 will be the  
replacement part installed. If unit being serviced is equipped with two P/N 807-1006 or 807-2971  
ignition modules, either interface board may be used. If the unit is equipped with one P/N 807-3365  
or 807-3366 ignition module, interface board 106-0386 should be used. The two boards most likely  
to be seen (i.e., the two latest designs) are illustrated below.  
SOUND  
GND  
1
13  
14  
15  
1
2
4
5
7
8
10  
11  
SOUND  
GND  
J2  
1
13  
14  
15  
1
2
4
5
7
8
10  
11  
2
3
J2  
F2  
2
Ignition  
GND  
J1  
D7  
AIR  
AMP Module  
2
3
D6  
GND  
J1  
3
6
9
12  
3
6
9
12  
3
2
1
6
5
4
9
8
7
12  
11  
10  
3
2
1
6
5
4
9
8
7
12  
11  
10  
12V  
3
2
1
6
5
4
9
8
7
12  
11  
10  
3
2
1
6
9
8
7
12  
11  
10  
This Fuse is NOT  
5
4
J3  
J3  
present on 806-3398 IFB.  
K3 K4  
K5  
D1  
GND  
V2D  
PWR  
AD  
GND  
V1D  
PWR  
ALR  
V1S  
K1  
GV  
D5  
GV  
GND  
V2D  
BLOWER  
MOTOR  
RELAY  
Blower  
Motor  
2 Amp  
GND  
V1D  
K4  
D3  
PWR  
PWR  
AD  
HEAT  
RELAY  
AND  
BLOWER  
MOTOR  
RELAY  
HEAT  
RELAY  
AND  
BLOWER  
MOTOR  
RELAY  
HEAT  
RELAY  
HEAT  
RELAY  
AS  
ALR  
V1S  
AS  
24V  
PWR  
D2  
D4  
V2S  
V2S  
K1  
K2  
3
PWR  
GND  
1
2
6
4
5
GND  
K2  
K3  
GND  
GV PWR  
AIR  
PWR  
GND  
AL 12V  
24V AL  
GV  
LATER DESIGN INTERFACE BOARDS P/N 806-3398 and 106-0386  
EARLIER DESIGN INTERFACE BOARD P/N 806-3398  
3-2  
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FREQUENTLY USED TEST POINTS FOR INTERFACE BOARDS 806-3398 AND 106-0386  
Meter  
Test  
Setting  
50VAC Scale  
50VAC Scale  
50VAC Scale  
Pins  
1 and 3 on J3 or J2  
Results  
12-18  
22-28  
22-28  
110-125  
110-125  
22-28  
22-28  
**  
12VAC Power to Controller  
24VAC Power to Right Module  
24VAC Power to Left Module  
120 VAC Power  
8 on J3 and GROUND  
8 on J1 and GROUND  
250VAC Scale 11 on J3 and GROUND  
250VAC Scale 12 on J3 and GROUND  
120 VAC Power to Blowers  
24VAC Power to Right High-Limit  
24VAC Power to Left High-Limit  
Probe Resistance (Right) *  
Probe Resistance (Left) *  
Probe Isolation  
50VAC Scale  
50VAC Scale  
9 on J3 and GROUND  
9 on J1 and GROUND  
R x 1000 OHMS 2 and 6 on J3 or 13 and 14 on J2  
R x 1000 OHMS 2 and 6 on J1 or 14 and 15 on J2  
R x 1000 OHMS 6 on J1 or J3 and GROUND  
**  
***  
High-Limit Continuity (Right)  
High-Limit Continuity (Left)  
R x 1 OHM  
R x 1 OHM  
9 on J3 and Wire 13C on Gas Valve  
9 on J1 and Wire 12C on Gas Valve  
0
0
** Disconnect 15-pin harness from controller before testing probe circuit.  
** See Probe Resistance Chart at end of chapter.  
*** 5 mega-Ohms or greater.  
These standard interface boards are also used in a number of fryer types besides the H52 Series. The  
information contained in this section applies to H52 Series applications ONLY.  
The earlier design 806-3398 board contains two heat relays (K1 and K2) that switch 24VAC to the  
ignition and gas valve circuits when the computer/controller heat logic circuit calls for heat. Relay  
K4 switches 120VAC to the blower motor when either K1 or K2 closes. The relays on this board are  
soldered on – if one fails, the whole board must be replaced.  
The newer design 806-3398 and 106-0386 boards have one or two relays. In this design, K2 and K3  
are double-pole-double throw (dpdt) relays that supply 24VAC to the ignition and gas valve circuits,  
as well as 120VAC to the blower motor. The relays on this board plug into sockets. If a relay fails,  
that relay can be replaced.  
All three interface boards have LEDs to assist in troubleshooting. On the earlier design 806-3398  
board, nine LEDs are arranged along the bottom. Later versions of the 806-3398 board, and the 106-  
0386 board have seven LEDs placed at various locations. The tables below identify the LEDs and  
their meaning.  
LATER DESIGN INTERFACE BOARD  
LED DIAGNOSTIC LIGHTS  
24 VAC to left gas valve (dual vat only)  
24 VAC to left ignition module  
EARLIER DESIGN INTERFACE BOARD  
LED DIAGNOSTIC LIGHTS  
1
2
3
4
5
6
7
12V Indicates 12 VAC from transformer  
24V Indicates 24 VAC from transformer  
24 VAC from transformer  
GV Indicates 24 VAC to gas valve (left or right)  
PWR Indicates 24 VAC to module (left or right)  
AL Indicates module lock-out (left or right)  
AIR CE and Japanese units only: air switch closed  
24 VAC to right ignition module  
24 VAC to gas valve (right valve if dual vat)  
12 VAC from transformer  
CE and Japanese units only: air switch closed  
3-3  
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INTERFACE BOARD  
J2  
1
12 VAC TO CPTR  
GROUND  
J3 PIN 1  
GROUND  
2
COMPUTER (12 VAC)  
COMPUTER  
J3 PIN 3  
3
RT HT RELAY  
4
COMPUTER  
COMPUTER  
12 VDC TO RELAYS  
LT HT RELAY  
5
6
NOT USED  
NOT USED  
NOT USED  
NOT USED  
7
*
8
** Dual Vat configurations  
** Full Vat configurations  
NOT USED  
NOT USED  
9
**  
ALR (RIGHT)  
RT ALARM OUT  
10  
11  
12  
13  
14  
15  
COMPUTER  
SOUND DEVICE  
AD (LEFT)  
*
LT ALARM OUT  
J3 PIN 6  
COMPUTER  
COMPUTER  
J1 PIN 2 & J3 PIN 2  
J1 PIN 6  
COMPUTER  
J1  
1
J3  
1
J2 PIN 1  
12 VAC XFMR  
TEMP PROBE  
NOT USED  
NOT USED  
J2 PIN 14  
J2 PIN 14  
TEMP PROBE  
2
2
12 VAC XFMR  
NOT USED  
NOT USED  
NOT USED  
NOT USED  
TEMP PROBE  
NOT USED  
24 VAC IN  
NOT USED  
NOT USED  
NOT USED  
J2 PIN 15  
J2 PIN 3  
3
3
NOT USED  
4
4
J2 PIN  
5
HOOD RELAY  
TEMP PROBE  
5
5
J2 PIN 13  
6
6
NOT USED  
NOT USED  
PWR via RT HT RELAY  
V1S OR V1D  
NOT USED  
24 VAC IN  
7
7
PWR via LT HT RELAY  
8
8
MAIN GAS VALVE via  
HIGH LIMIT  
V2D  
MAIN GAS VALVE  
9
9
via HLS  
NOT USED  
via HLS  
NOT USED  
NOT USED  
NOT USED  
10  
11  
12  
10  
11  
12  
NOT USED  
NOT USED  
NOT USED  
NOT USED  
BLOWER via K4 (old)  
or K2/K3 (new)  
BLOWER  
120 VAC IN  
BLOWER FAN  
AND XFMR BOX  
MOD 25V GROUND  
MOD V2D  
GROUND  
J1 PIN 9  
GROUND  
J3 PIN 9  
MOD 25V GROUND  
GND  
V2D  
GND  
V1D  
MOD VALVE used on  
Dual Vat Only  
MOD 25V TERM  
J1 PIN 8 via LT HT RELAY  
J3 PIN 8 via RT HT RELAY  
MOD 25V TERM  
PWR  
PWR  
DRAIN SWITCH (OPT)  
NOT USED  
J2 PIN 12  
J2 PIN 10  
J3 PIN 9  
MOD ALARM  
MOD VALVE  
AD  
AS  
ALR  
V1S  
NOT USED  
NOT USED  
NOT USED  
V2S  
LEFT VAT  
FULL OR RIGHT VAT  
CURRENT FLOW THROUGH  
INTERFACE BOARDS 806-3398 AND 106-0386  
(H52 APPLICATION)  
3-4  
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THERMOSTATS  
All fryers in the H52 Series have temperature probes located on the front centerline of each the fry-  
pot. (Dual vat frypots have a probe in each vat.) In this type thermostat, the probe resistance varies  
directly with the temperature. That is, as the temperature rises, so does resistance, at a rate of ap-  
proximately 2 ohms for every 1º F. Circuitry in the controller monitors the probe resistance and  
controls burner firing when the resistance exceeds or falls below programmed temperatures (set-  
points). The temperatures are programmed by means of a keypad or knob on the face of the control-  
ler.  
H52 Series fryers are also equipped with a high-limit thermostat. In the event that the fryer fails to  
properly control the oil temperature, the high-limit thermostat prevents the fryer from overheating to  
the flash point. The high-limit thermostat acts as a normally closed power switch that opens when  
exposed to temperatures above 425ºF to 450ºF (218ºC to 232ºC). The different types of thermostats  
have different part numbers for CE and Non-CE configured models, and are not interchangeable.  
3.2  
Accessing Fryers for Servicing  
DANGER  
Moving a fryer filled with cooking oil/shortening may cause spilling or splattering of  
the hot liquid. Follow the draining instructions in Chapter 4 of this manual before  
attempting to relocate a fryer for servicing.  
1. Shut off the gas supply to the unit. Unplug the power cords. Disconnect the unit from the gas  
supply.  
2. Remove any attached restraining devices.  
3. Relocate the fryer for service accessibility.  
4. After servicing is complete, reconnect the unit to the gas supply, reattach restraining devices, and  
plug in the electrical cords.  
3.3  
Cleaning the Gas Valve Vent Tube  
NOTE: This procedure is not required for fryers configured for export to CE  
countries.  
1.  
2.  
Set the fryer power switch and the gas valve to the OFF position.  
Carefully unscrew the vent tube from the gas valve. NOTE: The vent tube may be  
straightened for ease in removal.  
3.  
Pass a piece of ordinary binding wire (.052 inch diameter) through the tube to remove any  
obstruction.  
3-5  
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4.  
5.  
Remove the wire and blow through the tube to ensure it is clear.  
Reinstall the tube and bend it so that the opening is pointing downward.  
3.4  
Checking the Burner Manifold Gas Pressure  
DANGER  
Frymaster recommends that ONLY qualified service personnel perform this task.  
1. On non-CE fryers, ensure that the gas valve knob is in the OFF position.  
Honeywell  
ON  
OFF  
2. Remove the pressure tap plug from the gas valve assembly.  
Pressure Tap Plug  
Typical Non-CE  
Valve Assembly  
Typical CE Valve  
Assembly  
2. Insert the fitting for a gas pressure-measuring device into the pressure tap hole.  
3. On non-CE fryers only, place the gas valve in the ON position.  
4. Place the fryer power switch in the ON position. When the burner has lit and burned steadily for  
at least one minute, compare the gas pressure reading to the pressure for the corresponding gas in  
the appropriate table found on the following page.  
3-6  
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C E S ta n d a rd  
B u rn e r M a n ifo ld G a s P re s s u re s  
fo r F rye rs M a n u fa c tu re d A fte r A p ril 1 9 9 9  
P re s s u re (m b a r)  
S in g le  
V a t  
D u a l  
V a t  
G as  
N a tu ra l G a s L a c q  
(G 2 0 ) a t 2 0 m b a r  
N atural G as G ro niq ue *  
(G 2 5 ) a t 2 5 m b a r  
7
7
1 0  
1 0  
1 7  
2 0  
1 0  
1 0  
1 7  
2 0  
N atural G as G ro niq ue  
(G 2 5 ) a t 2 0 m b a r  
B u ta n e /P ro p a n e  
(G 3 0 ) a t 2 8 /3 0 o r 5 0 m b a r  
P ro p a n e  
(G 3 1 ) a t 3 7 o r 5 0 m b a r  
*
B elg ian G 2 5 = 7 .0 m b ar (sin g le o r d u al)  
C E S tan d ard  
B u rn er M an ifo ld G as P ressu res  
fo r F ryers M an u factu red T h ro u g h Ap ril 1999  
P ressu re (m b ar)  
S in g le  
V at  
D u al  
V at  
G as  
N atural G as Lacq  
7
10  
6.5  
9
(G 20) under 20 m bar  
N atural G as G ronique  
(G 25) under 25 m bar  
*
N atural G as G ronique  
(G 25) under 20 m bar  
10  
9
P ropane  
(G 31) under 37 or 50 m bar  
20.2  
18.5  
*
B elg ian G 25 = 7.0 m b ar (sin g le) o r 6.5 (d u al)  
N o n - C E S t a n d a r d  
B u r n e r M a n i f o l d G a s P r e s s u r e s  
G a s  
P r e s s u r e  
3 " W . C .  
0 . 7 3 k P a  
8 . 2 5 " W . C .  
2 . 5 k P a  
N a t u r a l  
L P  
3-7  
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5. To adjust the burner gas pressure, remove the cap from the gas valve regulator and adjust to the  
correct pressure.  
Non-CE  
Valve  
Later Model  
CE Valve  
Earlier Model CE Valve  
GAS VALVE REGULATOR CAP  
6. Place the fryer power switch (and the gas valve in non-CE fryers) in the OFF position. Remove  
the fitting from the pressure tap hole and reinstall the pressure tap plug.  
3.5  
Measuring Flame Current  
When the burner flame is properly adjusted, it will produce a current between 2.5 µA and 3.5 µA.  
Flame current is measured by placing a microamp (not milliamp) meter in series with the sensing  
wire on the ignitor. This is accomplished as follows:  
1. Place the fryer power switch in the OFF position.  
2. Disconnect the white sensing wire from one of the burner ignitors and connect it to the positive  
lead of the meter. Connect the negative lead of the meter to the terminal from which the sensing  
wire was removed.  
3. Place the fryer power switch in the ON position to light the burners. After the frypot temperature  
reaches 200°F (93°C), wait at least one minute before checking the reading. NOTE: The closer  
the unit is to normal operating temperature, the more accurate the reading will be.  
3.6  
Replacing Fryer Components  
3.6.1 Replacing the Controller or the Controller Wiring Harness  
1. Disconnect the fryer from the electrical supply.  
2. Remove the two screws in the upper corners of the control panel and swing the panel open from  
the top, allowing it to rest on its hinge tabs.  
3. Disconnect the wiring harness from the back of the controller and, if replacing the harness, dis-  
connect it from the interface board.  
4. Disconnect the ground wire from the controller, and remove the controller by lifting it from the  
hinge slots in the control panel frame.  
5. Reverse the procedure to install a new controller or wiring harness.  
3-8  
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3.6.2 Replacing the Temperature Probe or High-Limit Thermostat  
1. Disconnect the fryer from the electrical supply.  
2. Drain cooking oil below the level of the probe or thermostat.  
3. Remove the screws from the upper corners of the control panel and swing the panel open from  
the top, allowing it to rest on its hinge tabs.  
4. Unplug the controller wiring harness from the back of the controller.  
5. Disconnect the ground wire from the controller, and remove the controller by lifting it from the  
hinge slots in the control panel frame.  
6. Remove the screws securing the topcap to the fryer and lift the topcap up and off the fryer.  
7. Disconnect the ignition cables from the ignitors by grasping the boots and gently pulling toward  
you.  
8. Remove the screws securing the control panel frame in place and remove the frame.  
9. Remove the component box mounting screws and rotate the top of the component box out of the  
cabinet. Carefully pull it out far enough to disconnect the wiring harness plug(s) from the back  
of the box. Remove the box and set it aside.  
10. On CE fryers with a blower shield assembly installed, remove the screws securing the shield in  
place and remove it from the cabinet.  
11. Make a note of the location of the existing wires. Using a pin-pusher, disconnect the temperature  
probe wires (or high-limit thermostat wires) from the connector plug.  
12. Unscrew and remove the temperature probe (or high limit thermostat) from the frypot.  
13. Apply Loctite® PST56765 pipe thread sealant or equivalent to the replacement part threads.  
14. Screw the replacement part into the frypot.  
15. Connect the wires from the new component to the connector plug, referring to the note made in  
step 11.  
16. Reverse steps 1 through 10 to complete the procedure.  
3-9  
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3.6.3 Replacing the Interface Board  
1. Remove the component box per steps 1 through 9 of Section 3.6.2.  
2. Unplug the controller wiring harness from the interface board.  
3. Disconnect the wires attached to the interface board, marking or making a note of the wires and  
terminals to facilitate reconnection.  
4. Remove the nuts at each corner of the interface board and pull it from the studs.  
5. Reverse the procedure to install the replacement board, being sure to reinstall the spacers behind  
the interface board.  
3.6.4 Replacing an Ignition Module  
1. Disconnect the fryer from the electrical supply.  
2. Remove the screws from the upper corners of the control panel and swing the panel open from  
the top, allowing it to rest on its hinge tabs.  
3. Disconnect the wires from the ignition module, marking or making a note of the wires and termi-  
nals to facilitate reconnection.  
4. Remove the four ignition module screws and pull the module from the component box.  
5. Reverse the procedure to install the replacement module.  
3.6.5 Replacing an Ignitor Assembly  
DANGER  
Drain the frypot or remove the handle from the drain valve before proceeding further.  
1. Disconnect the fryer from the electrical supply.  
2. Disconnect the ignition cable from the ignitor by grasping the boot and gently pulling toward  
you.  
3. Remove the two sheet metal screws securing the ignitor to the mounting plate and pull the ignitor  
from the fryer.  
4. Reverse the procedure to install the replacement ignitor.  
3-10  
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3.6.6 Cleaning or Replacing a Combustion Air Blower  
A sheet metal shield or shield assembly prevents inadvertent access to the blower assembly. The  
specific design varies depending upon the particular configuration of the fryer and the country for  
which manufactured, but in all cases, the shield is attached to the cabinet framing by sheet metal  
screws. Remove the screws that secure the shield or shield assembly to the cabinet framing and pull  
the shield out of the fryer to expose the combustion air blower assembly.  
1. Disconnect the blower wiring harness and remove the blower assembly mounting nuts.  
Blower  
assembly  
mounting  
Wiring connection  
nuts  
2. Remove the three fasteners that secure the blower motor assembly to the blower housing, and  
separate the two components.  
Remove these fasteners.  
(On black-colored FASCO  
blowers there are three  
nuts. On silver-colored  
KOOLTRONICS blowers  
there are three screws.)  
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3. Wrap the motor with plastic wrap to prevent water from entering it. Spray degreaser or detergent  
on the blower wheel and the blower housing. Allow it to soak for five minutes. Rinse the wheel  
and housing with hot tap water, then dry with a clean cloth.  
Wrap the motor and  
wires with plastic wrap  
or a plastic bag.  
BLOWER HOUSING  
BLOWER WHEEL  
4. Remove the plastic wrap from the blower motor assembly. Reassemble the blower motor  
assembly and blower housing. Reinstall the blower assembly in the fryer.  
5. Reinstall the blower shield or shield assembly.  
6. Light the fryer in accordance with the procedure described in Chapter 3, Section 3.1.  
7. After the burners have been lit for at least 90 seconds, observe the flames through the burner  
viewing ports located on each side of the combustion air blower.  
Left Viewing  
Port is Behind  
Motor  
(NOTE: Blower  
shield omitted  
for clarity.)  
Right  
Viewing  
Port  
The air/gas mixture is properly adjusted when the burner manifold pressure is in accordance with the  
applicable table on page 3-7 and the burners display a bright orange-red glow. If a blue flame is ob-  
served, or if there are dark spots on a burner face, the air/gas mixture requires adjustment.  
3-12  
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Adjusting Air/Gas Mixture  
Non-CE Units and CE Units Built After April 1999  
On the side of the blower housing opposite the motor is a plate with one or two locking nuts. Loosen  
the nut(s) enough to allow the plate to be moved, then adjust the position of the plate to open or close  
the air intake opening until a bright orange-red glow is obtained. Carefully hold the plate in position  
and tighten the locking nut(s).  
TYPICAL NON-CE BLOWER ASSEMBLY  
TYPICAL CE BLOWER ASSEMBLY  
ON UNITS BUILT AFTER APRIL 1999  
Adjusting Air/Gas Mixture  
CE Units Built Through April 1999  
CE units built through April 1999 are equipped with a shield assembly in front of the blowers. An  
air shutter plate on the face of the shield assembly regulates the amount of airflow to the blower in-  
take. To adjust the shutter plate, loosen the locking screws and slide the shutter to the left or right as  
necessary to obtain a bright orange-red glow. Carefully hold the shutter plate in position and tighten  
the locking screws.  
TYPICAL CE BLOWER SHIELD ASSEMBLY  
ON UNITS BUILT THROUGH APRIL 1999  
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3.6.7 Replacing a Gas Valve  
DANGER  
Drain the frypot or remove the handle from the drain valve before proceeding further.  
1. Disconnect fryer from electrical and gas supplies.  
2. Disconnect the wires from the gas valve terminal block, marking each wire to facilitate recon-  
nection.  
3. Remove the vent tube and the enrichment tube fitting from the valve.  
4. Disconnect the flexible gas line(s).  
5. Carefully unscrew the valve from the manifold. NOTE: Some models may have the valve at-  
tached to the manifold by means of a pipe union. In such cases, remove the valve by uncoupling  
the union.  
6. Remove all fittings from the old gas valve and install them on the replacement valve, using Loc-  
tite® PST56765 or equivalent pipe thread sealant.  
7. Apply Loctite® PST 56765 or equivalent pipe thread sealant to the threads of the manifold (or the  
union). Reverse steps 1-5 to install the replacement gas valve.  
3.6.8 Replacing a Burner Assembly  
DANGER  
Drain the frypot or remove the handle from the drain valve before proceeding further.  
1. Disconnect the unit from the electrical and gas supplies.  
2. Remove the combustion air blower per the procedure found in Section 3.6.6.  
3. Remove the four nuts from the air plenum assembly and pull the assembly straight out toward  
you until it clears the burner tubes.  
NOTE: On a dual vat fryer, it will be necessary to remove the drain valve handles before the  
plenum can be removed.  
4. Disconnect the ignition cables from the ignitors by grasping their boots and pulling toward you.  
5. Disconnect the gas lines and enrichment tubes from the burner orifices and ignitor assemblies.  
6. Remove the four ¼” (6mm) nuts securing the outer front covers to the frypot assembly.  
7. Remove the sheet metal screws at the top of the outer front covers and pull the covers straight out  
toward you until clear of the mounting studs.  
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8. Remove the washers and tubular spacers from the mounting studs, then pull the inner covers  
straight out toward you until clear of the mounting studs.  
9. Grasp the burner firmly and pull it toward you until it clears the burner channels, taking care not  
to damage the ceramic tiles in the process.  
10. Clean all debris from the burner channels and combustion area.  
11. Inspect the upper and lower burner rails for cracked or burned-out welds.  
a. If the welds in the lower rail are cracked or burned out, the frypot must be replaced. Refer to  
Section 3.6.9 for procedure.  
b. If the welds in the upper rail are cracked or burned out, the upper rail must be replaced. Re-  
fer to Section 3.6.10 for procedure.  
12. Place a new insulating strip along the top, rear, and bottom edge of the burner and carefully slide  
it straight into the rails.  
NOTE: Use P/N 826-0931 for full vat frypots and P/N 826-0932 for dual vat frypots.  
13. Reverse steps 1 through 9 to reassemble the components.  
14. Fill the frypot with oil. Turn the fryer on, turn off or bypass the melt cycle, and operate the unit  
for at least 10 minutes.  
15. Visually examine the burner flame. The color and intensity on both sides should be the same.  
16. Use an inspection mirror to check for leaks in areas that cannot be directly observed.  
17. If a leak is detected, tighten all the lower insulation retainer nuts, allow the frypot to run for five  
additional minutes, and repeat steps 15 and 16.  
18. If the leak persists, use a rubber hammer and a small block of wood to tap the corners of the  
lower combustion chamber insulation retainers. Repeat steps 15 through 17. Repeat this step  
until no leakage is detected.  
3.6.9 Replacing the Frypot  
1. Drain cooking oil/shortening from the frypot.  
2. Remove all accessories, e.g., frypot covers, basket lift arms, etc. from the fryer.  
4. Disconnect the fryer from gas and electrical supplies.  
5. Remove the screws from the topcap above the control panel and lift it up and off the fryer(s).  
3-15  
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6. Remove the screws from the upper left and right corners of the control panel. Open the panel,  
disconnect the controller wiring harness and ground wire. Remove the controller from the fryer.  
7. Disconnect the ignition wires from the ignitor plugs by grasping their boots and pulling toward  
you.  
8. Remove the screws securing the component box to the frame, and then rotate the top of the box  
forward and out of the fryer enough to disconnect the wiring harness connector plug(s) on the  
rear of the box. Set the component box aside.  
9. Using a pin pusher, remove the temperature probe and high-limit thermostat wires from the  
plug(s), marking each wire to facilitate re-assembly.  
10. On BIH52 units, remove the cover from the safety drain switch, disconnect the wires from the  
switch, and pull them out of the switch box.  
11. On BIH52 units, remove the section(s) of square drain from the drain valve(s) of the frypot to be  
removed.  
12. Disconnect the gas lines and enrichment tubes from the burner orifices and ignitor assemblies.  
13. Remove the frypot hold down bracket.  
14. Remove the screws from the flue cap sides and back and lift it clear of the fryer(s).  
15. On BIH52 units, disconnect the oil return line(s) from the frypot to be removed.  
16. Carefully lift the frypot from the fryer cabinet.  
17. Remove the drain valve(s), temperature probe(s), high-limit thermostat(s), and ignitor assem-  
blies. Inspect each of these components carefully and install them in the replacement frypot if  
they are in serviceable condition. Use Loctite® PST56765 sealant or equivalent on component  
threads.  
NOTE: Some servicers, based upon their experience, recommend that probes and thermostats be  
replaced whenever a frypot is replaced, but this remains the customer’s decision.  
18. Reverse steps 1-16 to reassemble fryer.  
19. Perform steps 14 through 18 of Section 3.6.8 to ensure that there are no leaks in the burner insu-  
lation.  
CAUTION  
Before installing the temperature probe, high-limit thermostat, and drain valve on the  
replacement frypot, clean their threads and apply Loctite® PST56765 thread sealant  
or equivalent.  
3-16  
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3.6.10 Replacing Frypot Insulation and/or Upper Burner Rails  
NOTE: Replacing the burner rails requires completely tearing down the frypot and installing new  
frypot insulation. Refer to the frypot exploded view on page 3-18 for component identification.  
1. Remove the frypot per Section 3.6.9.  
2. Remove the burner assemblies (1).  
3. Remove insulation retainers and blanket insulation (2).  
4. Remove the upper oil zone insulation bracket and upper oil zone insulation (3).  
5. Remove the plenum (4).  
6. Remove the front lower combustion chamber insulation retainer and insulation (5), and the front  
lower combustion chamber inner insulation retainer and insulation (6).  
NOTE: Full vat units have two-piece insulation retainer and insulation components. Dual vat  
units have one-piece components.  
7. Remove the upper combustion chamber insulation retainer and insulation (7).  
8. Remove the inner upper combustion chamber insulation retainer and insulation (8).  
9. Remove the rear lower combustion chamber retainers, back, and insulation (9).  
NOTE: Full vat units have two-piece backs and four retainers. Dual vat units have one-piece  
backs and two retainers.  
10. Remove the flue assembly (10).  
11. Remove the upper burner rails (11).  
NOTE: For the following steps, refer to the frypot exploded view on page 3-19 for component  
identification.  
12. Remove any residual insulation, sealant, and/or oil from the exterior of the frypot.  
13. Place the “L” shaped pieces of combustion chamber insulation (1) in the front and rear corners of  
both upper rail-retaining slots.  
14. Use a small amount of furnace or muffler repair cement to seal the gaps at each end of both lower  
rails. (See inset, page 3-19.)  
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15. Install the upper burner rails (2) with the heat deflectors slanting toward the rear of the frypot.  
The rails will cover the “L” shaped pieces of combustion chamber insulation previously installed.  
3-19  
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16. Place the upper inner combustion chamber insulation and insulation retainers (3) on the top two  
studs on each side of the front of the frypot and secure with ¼-20 washer-nuts. (It is normal for  
the retainers to slice off the overhanging insulation.)  
17. Place the lower rear combustion chamber insulation (4) on the lower four studs at the rear of the  
frypot.  
18. Place one 1.625-inch tubular spacer (5) on each of the flue assembly (upper) studs at the rear of  
the frypot.  
NOTE: There are three different sizes of spacers. Verify the size to ensure the correct spacers  
are installed.  
19. Press the flue assembly (6) over the burner rails. It may be necessary to use a rubber mallet or  
screwdriver to align the components. Use four ¼-20 washer nuts to secure the flue assembly.  
Do not tighten the retainer nuts at this point. They should be finger-tight only.  
NOTE: The flue edge will cover one to two inches of the lower insulation.  
20. Install the lower rear combustion chamber back(s) and retainer(s) (7) with the flanged edge(s)  
against the flue. Secure with ¼-20 washer nuts.  
NOTE: Full vat units have two-piece backs and four retainers. Dual vat units come with one-  
piece backs and only two retainers.  
21. Insert the burners (9) into the rails to ensure the rail spacing and alignment are correct. The  
burner should slide freely into and out of the rails. The upper rail can be bent slightly to increase  
or decrease tension on the burner, and the edges of the slot can be closed or opened slightly to  
best fit the burner frame.  
22. Carefully wrap a strip of burner insulation (8) tightly around the rear and sides of the burner  
frame (9), with the glass-tape side of the strip on the outside. Do not use duct tape or adhesive  
to secure the strip to the burner frame.  
23. Align the burner to the burner rails while maintaining tension on the insulation strip. Insert the  
burner at a slight angle and begin pushing the burner slowly into the rails until it contacts the rear  
combustion chamber. The fit should be snug, but not excessively tight.  
24. Verify that the burners are flush with the front edge of the burner rails. Remove the excess  
burner insulation by cutting with a knife or diagonal pliers. Do not try to tear the insulation!  
25. Insert the upper front insulation (10) into its retainer (11), making sure that the holes in each  
piece are aligned with one another. Install the assembly with the insulation side toward the fry-  
pot and secure with ¼-20 washer-nuts. Do not over tighten.  
26. Place a washer on each of the four lower studs on the front of the frypot. Install the lower inner  
front insulation (12) with the rectangular openings toward the drain valve nipple. Install the  
lower inner front insulation retainer(s) (13).  
3-20  
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NOTE: Full vat units have a two-piece insulation retainer. Dual vat units have a one-piece re-  
tainer.  
27. If necessary, replace the sight-glasses and insulation (14).  
28. Place one washer and one 1.888-inch spacer (15) on each stud.  
NOTE: There are three different sizes of spacers. Verify the size to ensure the correct spacers  
are installed.  
29. Insert the front lower insulation (16) into the front lower insulation retainer(s) (17) and install  
assembly on frypot. Secure with ¼-20 washer-nuts. If frypot uses two retainers, connect them  
together with two ¼” self-tapping screws.  
NOTE: Full vat units have a two-piece insulation retainer and two pieces of insulation. Dual  
vat units have one-piece components.  
30. Return to the rear of the frypot and fully tighten all washer-nuts.  
31. Remove and replace the plenum gaskets (18).  
32. Place a 0.938-inch spacer (19) on the plenum-mounting studs, and mount the plenum (20). En-  
sure the gaskets are clear of the burner tubes by pulling the plenum back slightly. Place a washer  
on each stud and secure plenum with ¼-20 locknuts.  
33. Install the upper oil-zone insulation (21) by pressing it under the upper combustion chamber  
metalwork. Secure the insulation with the bracket (22) and ¼” self-tapping screws.  
34. Install the upper burner rail blanket insulation (23). Position any excess insulation toward the top  
of the frypot. Avoid overhang past the bottom of the upper burner rail. Overhang in this area  
will make future burner replacement more difficult.  
35. Cover the insulation with the insulation retainer (24), and secure with ¼” self-tapping screws.  
36. Reinstall probes, drain valves, high-limit thermostats and other pipefittings using Loctite®  
PST56765 sealant or equivalent on their threads.  
3.7  
Troubleshooting and Problem Isolation  
Because it is not feasible to attempt to include in this manual every conceivable problem or trouble  
condition that might be encountered, this section is intended to provide technicians with a general  
knowledge of the broad problem categories associated with this equipment, and the probable causes  
of each. With this knowledge, the technician should be able to isolate and correct any problem en-  
countered.  
Problems you are likely to encounter can be grouped into six broad categories:  
1. Ignition failures  
2. Improper burner functioning  
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3. Improper temperature control  
4. Computer-related problems  
5. Filtration problems  
6. Leakage problems  
The probable causes of each category are discussed in the following sections. A series of Trouble-  
shooting Guides (decision trees) is also included at the end of the chapter to assist in identifying  
some of the more common problems.  
3.7.1 Ignition Failures  
Ignition failure occurs when the ignition module fails to sense a flame within the 4-second time delay  
period and locks out. When this happens, the module sends 24VAC through the interface board  
alarm circuit to the controller/computer.  
Analog controllers indicate ignition failure by illuminating the heat light and trouble light simultane-  
ously. M100B and M2000 computers flash “ig n it io n f a il u r e ” in the display window on the  
side that failed (in full-vat units, it will flash in the right window only).  
The three primary reasons for ignition failure, listed in order of probability, are:  
1. Problems related to the gas and/or electrical power supplies  
2. Problems related to the electronic circuits  
3. Problems related to the gas valve.  
PROBLEMS RELATED TO THE GAS AND/OR ELECTRICAL POWER SUPPLIES  
The main indicators of this are that an entire battery of fryers fails to light and/or there are no indi-  
cator lights illuminated on the fryer experiencing ignition failure. Verify that the quick disconnect  
fitting is properly connected, the fryer is plugged in, the main gas supply valve is open, and the cir-  
cuit breaker for the fryer electrical supply is not tripped.  
PROBLEMS RELATED TO THE ELECTRONIC CIRCUITS  
If gas and electrical power are being supplied to the fryer, the next most likely cause of ignition fail-  
ure is a problem in the 24VAC circuit. If the fryer is equipped with a built-in filtration system  
(BIH52 models), first verify that the drain valve is fully closed. (The valve is attached to a mi-  
croswitch that must be closed for power to reach the gas valve. Often, although the valve handle ap-  
pears to be in the closed position, the microswitch is still open.) If the valve is fully closed, or the  
fryer does not have a built-in filtration system, refer to the troubleshooting guides TROUBLE-  
SHOOTING THE 24VAC CIRCUIT.  
Some typical causes of ignition failure in this category include a defective sensing wire in the ignitor  
assembly, a defective module, a defective ignition wire, and a defective ignitor.  
Occasionally you may encounter an ignition failure situation in which all components appear to be  
serviceable and the microamp reading is within specification, but the unit nevertheless goes into  
ignition failure during operation. The probable cause in this case is an intermittent failure of an  
ignition module. When the unit is opened up for troubleshooting, the module cools down enough to  
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operate correctly, but when the unit is again closed up and placed back into service the module heats  
up and fails.  
PROBLEMS RELATED TO THE GAS VALVE  
If the problem is not in the 24VAC circuit, it is most likely in the gas valve itself, but before replac-  
ing the gas valve refer to TROUBLE SHOOTING THE GAS VALVE.  
3.7.2 Improper Burner Functioning  
With problems in this category, the burner ignites but exhibits abnormal characteristics such as  
“popping,” dark spots on the burner ceramics, fluctuating flame intensity, and flames shooting out of  
the flue.  
Popping” indicates delayed ignition. In this condition, the main gas valve is opening but the burner  
is not immediately lighting. When ignition does take place, the excess gas “explodes” into flame,  
rather than smoothly igniting.  
The primary causes of popping are:  
Incorrect or fluctuating gas pressure  
A defective or incorrectly adjusted combustion air blower  
Inadequate make-up air  
Heat damage to the controller or ignition module  
A cracked ignitor or broken ignition wire  
A defective ignition module  
Cracked burner tile (this typically causes a very loud pop).  
If popping occurs only during peak operating hours, the problem may be incorrect or fluctuating gas  
pressure. Verify that the incoming gas pressure (pressure to the gas valve) is in accordance with the  
appropriate CE or Non-CE Standard found in Section 2.3 of this manual, and that the pressure re-  
mains constant throughout all hours of usage. Refer to page 2-6 for the procedure for checking the  
pressure of gas supplied to the burner.  
If popping is consistent during all hours of operation, the most likely cause is an insufficient air sup-  
ply. Check for “negative pressure” conditions in the kitchen area. If air is flowing into the kitchen  
area, this indicates that more air is being exhausted than is being replenished and the burners may be  
starved for air.  
If the fryer’s gas and air supplies are okay, the problem is most likely with one of the electrical com-  
ponents. Examine the ignition module and controller for signs of melting/distortion and/or discol-  
oration due to excessive heat build-up in the fryer. (This condition usually indicates improper flue  
performance.) A melted or distorted ignition module is automatically suspect and should be re-  
placed, but unless the condition causing excessive heat is corrected, the problem is likely to recur.  
Verify that the ignition wire is tightly connected at both ends and free of obvious signs of damage.  
Again, if damage is due to excessive heat in the fryer, that problem must also be corrected.  
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Check for proper operation by disconnecting the wire from the ignitor (spark plug), inserting the tip  
of a screw driver into the terminal, and holding it near the frame of the fryer as the power switch is  
placed in the ON position. A strong, blue spark should be generated for at least 4 seconds.  
DANGER  
MAKE SURE YOU ARE HOLDING THE INSULATED HANDLE OF THE SCREWDRIVER  
AND NOT THE BLADE. THE SPARKING CHARGE IS APPROXIMATELY 25,000  
VOLTS.  
Examine the ignitor (spark plug) for any signs of cracking. A cracked ignitor must be replaced.  
If all other causes have been ruled out, examine the burner tiles for any signs of cracking. If found,  
the burner must be replaced.  
Fluctuating flame intensity is normally caused by either improper or fluctuating incoming gas pres-  
sure, but may also be the result of variations in the kitchen atmosphere. Verify incoming gas pres-  
sure in the same way as for “popping,” discussed in the preceding paragraphs. Variations in the  
kitchen atmosphere are usually caused by air conditioning and/or ventilation units starting and stop-  
ping during the day. As they start and stop, the pressure in the kitchen may change from positive or  
neutral to negative, or vice versa. They may also cause changes in airflow patterns that may affect  
flame intensity.  
Dark spots on the burner tiles are the result of an improper air/gas mixture. Adjust the combustion  
air blower to reduce the amount of air in the mixture to correct this problem.  
Flames shooting out of the flue are usually an indication of negative pressure in the kitchen. Air is  
being sucked out of the burner enclosure and the flames are literally following the air. If negative  
pressure is not the cause, check for high burner manifold gas pressure in accordance with the proce-  
dures on page 2-6.  
An excessively noisy burner, especially with flames visible above the flue opening, may indicate  
that the gas pressure is too high, or it may be that, on non-CE units, the gas valve vent tube is  
blocked. If the incoming gas pressure is correct and the vent tube on non-CE units is unobstructed,  
the gas valve regulator is probably defective.  
Occasionally a burner may apparently be operating correctly, but nevertheless the fryer has a slow  
recovery rate (the length of time required for the fryer to increase the oil temperature from 270ºF to  
320ºF (133ºC to 160ºC)). The primary causes of this are an over-filled vat, a dirty or out-of-  
adjustment combustion air blower, low burner manifold pressure, and/or damaged burner tiles.  
Adding oil to the frypot during the recovery process will also cause a slow recovery rate. If these  
causes are ruled out, the probable cause is a misadjusted gas valve regulator. Refer to page 2-6 for  
the procedure for checking the pressure of gas supplied to the burner.  
3.7.3 Improper Temperature Control  
Temperature control, including the melt cycle, is a function of several interrelated components, each  
of which must operate correctly. The principle component is the temperature probe. Other compo-  
nents include the interface board, the controller itself, and the ignition module.  
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Improper temperature control problems can be categorized into melt cycle problems and failure to  
control at setpoint problems.  
MELT CYCLE PROBLEMS  
The melt cycle is automatically initiated by the controller (Analog, M100B, or M2000) when the  
controller is first turned on. The unit should remain in the melt cycle until the oil in the frypot  
reaches 180ºF (82ºC). (Do not confuse the melt cycle with the LOW TEMP warning. This warning will  
be displayed when the M100B or M2000 computer senses that the oil in the frypot is more than 45ºF  
(25ºC) below the setpoint.)  
Problems may be with the controller itself, the temperature probe, or a malfunctioning heat relay on  
the interface board.  
FAILURE TO CONTROL AT SETPOINT  
Problems in this category may be with the temperature probe, the interface board, or the controller.  
3.7.4 Recovery Time or “Rate Of Rise” and the M100B “Rec Lock” Condition  
Recovery time or “rate of rise” is a method of measuring a fryer’s performance. Put simply, it is the  
time required for the cooking oil temperature to rise from 270ºF to 320ºF (133ºC to 160ºC). This  
range is used as a standard since ambient kitchen temperatures can effect the test if lower ranges are  
used.  
The M100B computer performs the recovery test when the fryer is first turned on and anytime there-  
after when the temperature of the oil drops below 250ºF (121ºC), such as when cold cooking oil is  
added to the frypot. If the fryer takes longer than 2 minutes and 35 seconds to recover, the display  
will show REC LOCK and the computer will lock out.  
The currently recorded recovery time can be viewed anytime the temperature of the cooking oil is  
above 270ºF (133ºC) by pressing the recovery time recall switch  
.
If REC LOCK occurs three or more times within a week, verify that oil is not being added when the  
fryer is heating (that is, while a heat mode indicator is illuminated). If oil is not being added while  
the fryer is heating, there is a problem with the fryer.  
To clear the REC LOCK condition, turn the computer off by pressing the right  
switch. Enter the  
1
programming mode by pressing and releasing the left  
,
2 , and  
switches simultaneously. The  
switch. The computer  
computer will display its model number and then FR FRIES YES. Press the  
will display LOCK CLEARED.  
3.7.5 Filtration Problems  
BIH52 units are equipped with FootPrint III built-in filtration systems. The majority of filtration  
problems arise from operator error. One of the most common errors is placing the filter paper on the  
bottom of the filter pan rather than over the filter screen.  
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Whenever the complaint is “the pump is running, but no oil is being filtered,” check the installation  
of the filter paper, including that the correct size is being used. While you are checking the filter pa-  
per, verify that the O-ring on the bottom of the filter pan is present and in good condition. A missing  
or worn O-ring will allow the pump to suck air and decrease its efficiency.  
If the pump motor overheats, its thermal overload will trip and the motor will not start until it is re-  
set. If the pump motor does not start, press the red reset switch located on the rear of the motor. If  
the pump then starts, something caused the motor to overheat. It may just be that several frypots  
were being filtered one after the other and the pump got hot. Letting the pump cool down for at least  
a half-hour is all that is required in this case. More often, the pump overheated for one of the fol-  
lowing reasons:  
Shortening was solidified in the pan or filter lines.  
The operator attempted to filter oil or shortening that was not heated. Cold oil and shortening  
are thicker and cause the pump motor to work harder and overheat.  
If the motor hums but the pump does not rotate, there is a blockage in the pump. Incorrectly sized or  
installed paper will allow food particles and sediment to pass through the filter pan and into the  
pump. When sediment enters the pump, the gears can bind up causing the motor to overload, again  
tripping the thermal overload. Solidified shortening in the pump will also cause it to seize, with the  
same result.  
A pump seized by debris or hard shortening can usually be freed by manually moving the gears with  
a screwdriver or other instrument as illustrated below. Make sure power to the pump motor is off  
before trying this.  
1. Disconnect power to the filter system.  
2. Remove the input plumbing from the pump.  
3. Use a screwdriver to manually turn the gears.  
Turning the pump gears backwards will release a hard particle and allow its removal.  
Turning the pump gears forward will push softer objects and solid shortening through the  
pump and allow free movement of the gears.  
Sediment Particle  
Oil Flow  
Sediment Particle  
Up for reverse  
Down for forward  
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Improperly sized or installed paper will also allow food particles and sediment to pass through and  
clog the suction tube on the bottom of the filter carriage. Particles large enough to block the suction  
tube may indicate that the crumb tray is not being used.  
Pan blockage can also occur if shortening is left in the pan and allowed to solidify. The heater strip  
on the suction tube is designed to prevent solidification of residual shortening left in the tube. It will  
not melt or prevent solidification of shortening in the pan.  
Blockage removal can be accomplished by forcing the item out with an auger or drain snake.  
NEVER use compressed air or other pressurized gases to force out the blockage.  
The electronics of the FootPrint III system are simple and straightforward. Microswitches, attached  
to handles for each vat and wired in parallel, provide the 24VAC required to activate the pump relay  
coil when the handles are moved to the ON position. The activated pump relay coil pulls in the  
pump motor switch, supplying power to the pump motor.  
Line VAC  
All Heater Tapes (Original and Redesigned Models)  
(Heater Tapes have been removed from  
oil return lines in Redesigned Models)  
24VAC  
Solenoids  
(Redesigned  
Models Only)  
Pump Relay  
Coil  
Micro-  
switches  
Pump Motor  
M
Pump Motor Switch  
FootPrint III Simplified Wiring Diagram  
For FootPrint III systems built before August 1997, all heater tapes are wired directly into the line  
VAC source. They remain energized as long as the unit is plugged in. In systems built in August  
1997 and later, oil return line heater tapes have been eliminated. In these units, the only heater tape  
used is on the suction tube and pump. This tape is still wired directly into the line voltage. A pair of  
vacuum-breaking solenoids is wired into the 24VAC circuit.  
The redesigned FP III is distinguished from original-design units by the absence of casters on the  
filter base assembly. The redesign incorporated an improved oil return system that allows  
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oil/shortening to drain back to the filter pan when the filter system is turned off, eliminating the need  
for most heated oil return components.  
Operation of the redesigned FP-III system is the same as for the original design.  
ORIGINAL VS REDESIGNED FP-III FILTRATION SYSTEM  
Original System  
Redesigned System  
Return lines and manifolds wrapped with silicone No heater strips or aluminum tape on return lines.  
strip heaters and aluminum tape.  
Filter base assembly connected to unit with a Non-heated Teflon hose with a swivel joint con-  
black, heated return hose beneath the filter.  
nects the filter base assembly to the unit above  
the filter.  
Filter base assembly equipped with swivel cast- Filter base assembly has no casters.  
ers.  
Operator-removable filter base assembly. (Filter Filter base assembly is not removable except by  
base assembly stoplocks in cabinet can be ro- a qualified service technician. (Filter base as-  
tated to remove tray.)  
sembly stoplocks fitted with a screw and nut to  
prevent filter removal.)  
Oil/shortening remains in return lines when filter Oil/shortening gravity-drains back to the filter pan  
system is turned off.  
when filter system is turned off, leaving no oil or  
shortening in return lines.  
Square Drain Sub-System  
The only change to the square drain sub-system is the addition of a ¼” NPT vent coupling to the  
leftmost end sections to allow attachment to a vacuum-breaking solenoid. The new end sections may  
also be used on the original-design filtration system by plugging the vent port with a ¼” NPT pipe  
plug coated with sealant. All other square drain components remain unchanged.  
Rear-Flush Sub-System  
A one-piece, welded rear manifold and Dormont stainless steel flexlines replace the various pieces of  
½” NPT piping, flexlines, and heater-strips used on the original-design filtration system. A solenoid  
vent valve is attached at the left end of the oil return manifold mounted at the rear of the leftmost two  
frypots. It prevents vacuum-lock of the system as oil/shortening drains back to the filter pan when  
the unit is turned off. The solenoid valve is connected to the square drain sub-system by a clear ”  
O.D. Teflon tube and threaded fittings. The Gemini ball valve used on the manifold is the same as  
that used on the earlier design. Eight and one-half-inch stainless steel Dormont flexlines replace the  
flexlines that connect the manifolds to the valves. Standard ½” X ½” X 90º black metal street el-  
bows are used to make the connections.  
Filter Base Assembly and Pump Sub-System  
Casters are not present on the new-design filter base. In addition, the filter base assembly has been  
redesigned to prevent it being taken out of the cabinet without removing a set of machine screws and  
nuts. The filter pan is unchanged and is completely removable.  
A new Teflon hose with a braided stainless steel covering connects the pump to the rear manifold  
and replaces the heated hose running from the pump discharge under the unit to the Power Shower  
plumbing. The new hose is fitted with a 90º swivel at the manifold end and a straight swivel at the  
pump end to prevent kinking.  
The pump plumbing has been changed by the addition of a solenoid valve at the pump discharge, a  
¼” I.D. Dormont stainless steel flexline that connects the solenoid valve to the pump inlet fittings,  
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and miscellaneous standard black metal fittings for connections. This design allows oil/shortening to  
bypass the pump as it drains from the oil return lines back into the filter pan when the system is  
turned off. Bypassing the pump expedites draining of the lines. The pump solenoid leads are con-  
nected to Pins 7 and 9 of the upper 9-pin plug assembly.  
Filter Wiring Box  
The original-design 5-lead cable connecting the filter assembly to the filter wiring box has been re-  
placed with a new, universal 7-lead cable to accommodate the solenoid mounted on the front mani-  
fold. The two new leads have a separate connector for attachment to the solenoid. When a filter ca-  
ble is ordered for either filtration system configuration (original or redesigned), the new 7-wire cable  
will be sent. The two extra wires and connector will not interfere with the original filtration system  
or its operation.  
Verifying Solenoid Operation  
Proper operation of the 24VAC manifold and pump solenoids can be verified by removing the pump  
motor lead from terminal 4 of the pump motor relay in the filter wiring box and then activating the  
oil return lever. Proper solenoid operation will be evidenced by an audible “click” or vibration of  
both the pump solenoid and the manifold solenoid.  
3.7.6 Leakage Problems  
Leakage of the frypot will usually be due to improperly sealed high limit thermostats, temperature  
probes, and drain fittings. When installed or replaced, each of these components must be sealed with  
Loctite® PST56765 sealant or equivalent to prevent leakage. In very rare cases, a leak may develop  
along one of the welded edges of the frypot. When this occurs, the frypot must be replaced.  
If the sides and/or ends of the frypot are coated with oil/shortening, the most likely cause is spillage  
over the top of the frypot rather than leakage.  
The clamps, which hold the drain tube sections together, may loosen over time as the tubes expand  
and contract with heating and cooling during use. If the section of drain tube connected to the drain  
valve is removed for whatever reason, make sure that its o-ring is in good condition and properly  
fitted around the nipple of the drain section when it is reinstalled. Also, check to insure that the  
drain tube runs downward from the drain along its whole length and has no low points where oil or  
shortening may accumulate.  
3.8  
Troubleshooting Guides  
The troubleshooting guides found in the pages that follow are intended to assist service technicians  
in quickly isolating the probable causes of equipment malfunctions by following a logical, step-by-  
step process.  
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3.8.1 Troubleshooting the 24VAC Circuit  
UNIT IS CONNECTED TO  
POWER SUPPLY, DRAIN  
VALVE IS FULLY  
CLOSED, CONTROLLER  
IS ON AND CALLING  
FOR HEAT (heat mode  
indicator is illuminated).  
NOTE: All voltage measurements must  
be made within 4 seconds of unit calling  
for heat. If unit does not fire within 4  
seconds, ignition modules will lock out  
and the computer must be turned off then  
back on to reset.  
Is 24VAC  
present on interface  
board J3 pin 9 (LED 5 (GV)) and,  
on dual vat units, J1 pin 9  
(LED 1 (GV))?  
Is 24VAC  
24V circuit is OK.  
present across gas valve main  
coil (PV terminal) (on both valves  
if dual vat)?  
Yes  
Yes  
Problem may be  
with gas valve.  
No  
Probable causes are an open high-limit  
or a failed wire between the interface  
board and the gas valve. On units with  
built-in filtration, cause may also be a  
failed drain safety switch.  
No  
Check continuity of high-limit and  
continuity of drain safety switch.  
If both are zero,  
Probable cause is a  
failed interface board.  
problem is in wiring.  
Yes  
Is 24VAC  
present on the right PWR  
terminal (LED 4) (and left PWR  
terminal (LED 2), if  
dual vat)?  
Is 24VAC  
present on V1S (or  
V1D and V2D, if  
dual vat)?  
Is LED 3 (24V)  
lit continuously?  
Yes  
Yes  
No  
No  
No  
Probable causes are a failed  
24V transformer, failed  
wiring between transformer and interface  
board or fuse on 106-0386 interface  
board.  
If ignition module fuse  
is good, probable causes are a  
failed ignition module or a failed  
interface board. Replace suspect  
ignition module with one known  
to be good to isolate cause.  
Probable cause  
is a failed interface  
board.  
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24 VOLT CIRCUIT  
With Interface Board 806-3398 or 106-0386 and  
Two 807-1006 (FV/DV), 807-2971 (FV/DV), or 807-3365 (DV) Ignition Modules  
24V  
TRANSFORMER  
LED 3 (24V)  
J1 PIN 8  
J3 PIN 8  
K1  
K2  
2 (PWR) LED  
LED 4 (PWR)  
FV = Full Vat  
DV = Dual Vat  
PWR  
PWR  
High Voltage  
to Ignitor  
IGNITION  
MODULE  
IGNITION  
MODULE  
High Voltage  
to Ignitor  
Flame Sensor  
Flame Sensor  
V2D  
V1S (FV) OR V1D (DV)  
1 (GV) LED  
LED 5 (GV)  
J1 PIN 9  
J3 PIN 9  
HIGH  
LIMIT  
HIGH  
LIMIT  
SWITCH  
SWITCH  
GAS  
GAS  
VALVE  
VALVE  
DRAIN  
SAFETY  
SWITCH  
DRAIN  
SAFETY  
SWITCH  
This switch used only with  
built-in filtration systems.  
LEFT VAT  
FULL OR RIGHT VAT  
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24 VOLT CIRCUIT  
With Interface Board 806-3398 or 106-0386 and  
One 807-3366 (FV) Ignition Module  
24V  
TRANSFORMER  
J3 PIN 8  
Fuse  
LED 3 (24V)  
NOTE: Some units may  
be wired in this manner.  
K2  
IGNITION  
MODULE  
LED 4 (PWR)  
PWR (right side)  
V1S  
Left Flame  
Sensor  
High Voltage  
to Left Ignitor  
IGNITION  
MODULE  
Right Flame  
Sensor  
High Voltage  
to Right Ignitor  
PWR (left side)  
Jumper  
V2S  
V1D  
LED 5 (GV)  
LED 5 (GV)  
J3 PIN 9  
J3 PIN 9  
HIGH  
LIMIT  
SWITCH  
GAS  
VALVE  
DRAIN  
SAFETY  
SWITCH  
This switch used only with  
built-in filtration systems.  
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3.8.2 Troubleshooting the Gas Valve  
CONTROLLER  
IS CALLING  
FOR HEAT.  
For non-CE units, verify  
gas valve is in ON  
position.  
Is 24VAC  
present across gas  
valve main coil?  
Problem is with 24VAC Circuit.  
Refer to "Troubleshooting the  
24VAC Circuit" on page 3-30.  
No  
Yes  
Is incoming  
gas pressure in  
accordance with tables in  
Section 2.3  
Problem is with  
gas supply to fryer.  
No  
of this manual?  
Yes  
Is outgoing  
gas pressure in  
accordance with tables on  
page 3-7  
Probable cause is misadjusted  
or failed gas valve. Adjust gas valve in  
accordance with Section 3.4 of this  
manual. If valve cannot be  
No  
of this manual?  
adjusted, replace valve.  
Yes  
Gas valve is OK>  
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3.8.3 Troubleshooting the Temperature Probe  
While it is still in the  
frypot, inspect probe  
body for damage.  
Remove and replace if  
bent, dented or cracked.  
Inspect leads for fraying,  
burning, breaks, and/or  
kinks. If found, replace  
probe.  
Determine temperature of  
cooking oil/shortening using  
a thermometer or pyrometer  
placed at tip of probe.  
Is resistance through  
J3 pins 2 and 6 (J1 pins 2 and 6 for  
left side of dual vat) approximately equal to  
that given in Probe Resistance Chart for  
the corresponding temperature?  
No  
Yes  
Measure resistance through  
each of the previously tested  
pins to ground.  
Is resistance  
5 megaohms or greater in  
each pin?  
Problem is not  
with probe.  
Yes  
No  
Probe has failed.  
Note: Disconnect computer before measuring probe resistance.  
3-34  
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3.9  
Probe Resistance Chart  
Probe Resistance Chart  
For use with H52 Series fryers manufactured with Minco Thermistor probes only.  
F
OHMS  
1000  
1002  
1004  
1006  
1008  
1011  
1013  
1015  
1017  
1019  
1021  
1023  
1025  
1027  
1030  
1032  
1034  
1036  
1038  
1040  
1042  
1044  
1046  
1049  
1051  
1053  
1055  
1057  
1059  
1061  
1063  
1065  
1068  
1070  
1072  
1074  
1076  
1078  
1080  
1082  
1084  
1086  
1089  
1091  
1093  
1095  
1097  
1099  
1101  
1103  
1105  
C
0
1
1
2
2
3
3
4
4
5
6
6
7
7
8
8
F
83  
84  
85  
86  
87  
88  
89  
90  
91  
92  
93  
94  
95  
96  
97  
OHMS  
1107  
1110  
1112  
1114  
1116  
1118  
1120  
1122  
1124  
1126  
1128  
1131  
1133  
1135  
1137  
1139  
1141  
1143  
1145  
1147  
1149  
1151  
1154  
1156  
1158  
1160  
1162  
1164  
1166  
1168  
1170  
1172  
1174  
1176  
1179  
1181  
1183  
1185  
1187  
1189  
1191  
1193  
1195  
1197  
1199  
1201  
1722  
1204  
1206  
1208  
1210  
C
F
OHMS  
1214  
1216  
1218  
1220  
1222  
1224  
1226  
1229  
1231  
1233  
1235  
1237  
1239  
1241  
1243  
1245  
1247  
1249  
1251  
1253  
1255  
1258  
1260  
1262  
1264  
1266  
1268  
1270  
1272  
1274  
1276  
1278  
1280  
1282  
1284  
1287  
1289  
1291  
1293  
1295  
1297  
1299  
1301  
1303  
1305  
1307  
1309  
1311  
1313  
1315  
1317  
C
F
OHMS  
1320  
1322  
1324  
1326  
1328  
1330  
1332  
1334  
1336  
1338  
1340  
1342  
1344  
1346  
1348  
1350  
1352  
1354  
1357  
1359  
1361  
1363  
1365  
1367  
1369  
1371  
1373  
1375  
1377  
1379  
1381  
1383  
1385  
1387  
1389  
1391  
1393  
1395  
1398  
1400  
1402  
1404  
1406  
1408  
1410  
1412  
1414  
1416  
1418  
1420  
1422  
C
85  
86  
86  
87  
87  
88  
88  
89  
89  
90  
91  
91  
92  
92  
93  
93  
94  
94  
95  
96  
96  
97  
97  
98  
F
OHMS  
1424  
1426  
1428  
1430  
1432  
1434  
1436  
1438  
1440  
1442  
1444  
1447  
1449  
1451  
1453  
1455  
1457  
1459  
1461  
1463  
1465  
1467  
1469  
1471  
1473  
1475  
1477  
1479  
1481  
1483  
1485  
1487  
1489  
1491  
1493  
1495  
1497  
1499  
1501  
1503  
1505  
1507  
1509  
1512  
1514  
1516  
1518  
1520  
1522  
1524  
1526  
C
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
73  
74  
75  
76  
77  
78  
79  
80  
81  
82  
28  
29  
29  
30  
31  
31  
32  
32  
33  
33  
34  
34  
35  
36  
36  
37  
37  
38  
38  
39  
39  
40  
41  
41  
42  
42  
43  
43  
44  
44  
45  
46  
46  
47  
47  
48  
48  
49  
49  
50  
51  
51  
52  
52  
53  
53  
54  
54  
55  
56  
56  
134  
135  
136  
137  
138  
139  
140  
141  
142  
143  
144  
145  
146  
147  
148  
149  
150  
151  
152  
153  
154  
155  
156  
157  
158  
159  
160  
161  
162  
163  
164  
165  
166  
167  
168  
169  
170  
171  
172  
173  
174  
175  
176  
177  
178  
179  
180  
181  
182  
183  
184  
57  
57  
58  
58  
59  
59  
60  
61  
61  
62  
62  
63  
63  
64  
64  
65  
66  
66  
67  
67  
68  
68  
69  
69  
70  
71  
71  
72  
72  
73  
73  
74  
74  
75  
76  
76  
77  
77  
78  
78  
79  
79  
80  
81  
81  
82  
82  
83  
83  
84  
84  
185  
186  
187  
188  
189  
190  
191  
192  
193  
194  
195  
196  
197  
198  
199  
200  
201  
202  
203  
204  
205  
206  
207  
208  
209  
210  
211  
212  
213  
214  
215  
216  
217  
218  
219  
220  
221  
222  
223  
224  
225  
226  
227  
228  
229  
230  
231  
232  
233  
234  
235  
236  
237  
238  
239  
240  
241  
242  
243  
244  
245  
246  
247  
248  
249  
250  
251  
252  
253  
254  
255  
256  
257  
258  
259  
260  
261  
262  
263  
264  
265  
266  
267  
268  
269  
270  
271  
272  
273  
274  
275  
276  
277  
278  
279  
280  
281  
282  
283  
284  
285  
286  
113  
114  
114  
115  
116  
116  
117  
117  
118  
118  
119  
119  
120  
121  
121  
122  
122  
123  
123  
124  
124  
125  
126  
126  
127  
127  
128  
128  
129  
129  
130  
131  
131  
132  
132  
133  
133  
134  
134  
135  
136  
136  
137  
137  
138  
138  
139  
139  
140  
141  
141  
98  
99  
9
9
100  
101  
102  
103  
104  
105  
106  
107  
108  
109  
110  
111  
112  
113  
114  
115  
116  
117  
118  
119  
120  
121  
122  
123  
124  
125  
126  
127  
128  
129  
130  
131  
132  
133  
10  
11  
11  
12  
12  
13  
13  
14  
14  
15  
16  
16  
17  
17  
18  
18  
19  
19  
20  
21  
21  
22  
22  
23  
23  
24  
24  
25  
26  
26  
27  
27  
28  
98  
99  
99  
100  
101  
101  
102  
102  
103  
103  
104  
104  
105  
106  
106  
107  
107  
108  
108  
109  
109  
110  
111  
111  
112  
112  
113  
3-35  
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Probe Resistance Chart (Continued)  
For use with H52 Series fryers manufactured with Minco Thermistor probes only.  
F
OHMS  
1528  
1530  
1532  
1534  
1536  
1538  
1540  
1542  
1544  
1546  
1548  
1550  
1552  
1554  
1556  
1558  
1560  
1562  
1564  
1566  
1568  
1570  
1572  
1574  
1576  
1578  
1580  
1582  
1584  
1586  
1588  
1590  
1592  
1594  
1596  
1598  
1600  
1602  
1604  
1606  
1608  
1610  
1612  
1614  
1616  
1618  
1620  
1622  
1624  
1626  
1628  
C
F
OHMS  
1630  
1632  
1634  
1636  
1638  
1640  
1642  
1644  
1646  
1648  
1650  
1652  
1654  
1656  
1658  
1660  
1662  
1664  
1666  
1668  
1670  
1672  
1674  
1676  
1678  
1680  
1682  
1684  
1686  
1688  
1690  
1692  
1694  
1696  
1698  
1700  
1702  
1704  
1706  
1708  
1710  
1712  
1714  
1716  
1718  
1720  
1722  
1724  
1726  
1728  
1730  
C
F
OHMS  
1732  
1734  
1736  
1738  
1740  
1742  
1744  
1746  
1748  
1750  
1752  
1754  
1756  
1758  
1760  
1762  
1764  
1766  
1768  
1770  
1772  
1774  
1776  
1778  
1780  
1781  
1783  
1785  
1787  
1789  
1791  
1793  
1795  
1797  
1799  
1801  
1803  
1805  
1807  
1809  
1811  
1813  
1815  
1817  
1819  
1821  
1823  
1825  
1827  
1829  
1831  
C
F
OHMS  
1833  
1835  
1837  
1839  
1841  
1843  
1845  
1846  
1848  
1850  
1852  
1854  
1856  
1858  
1860  
1862  
1864  
1866  
1868  
1870  
1872  
1874  
1876  
1878  
1880  
1882  
1884  
1886  
1888  
1890  
1892  
1893  
1895  
1897  
1899  
1901  
1903  
1905  
1907  
1909  
1911  
1913  
1915  
1917  
1919  
1921  
1923  
1925  
1927  
1929  
1931  
C
F
OHMS  
1932  
1934  
1936  
1938  
1940  
1942  
1944  
1946  
1948  
1950  
1952  
1954  
1956  
1958  
1960  
1962  
1964  
1965  
1967  
1969  
1971  
1973  
1975  
1977  
1979  
1981  
1983  
1985  
1987  
1989  
1991  
1993  
1995  
1996  
1998  
2000  
2002  
2004  
2006  
2008  
2010  
2012  
2014  
2016  
2018  
2020  
2022  
2025  
2027  
2029  
2031  
C
287  
288  
289  
290  
291  
292  
293  
294  
295  
296  
297  
298  
299  
300  
301  
302  
303  
304  
305  
306  
307  
308  
309  
310  
311  
312  
313  
314  
315  
316  
317  
318  
319  
320  
321  
322  
323  
324  
325  
326  
327  
328  
329  
330  
331  
332  
333  
334  
335  
336  
337  
142  
142  
143  
143  
144  
144  
145  
146  
146  
147  
147  
148  
148  
149  
149  
150  
151  
151  
152  
152  
153  
153  
154  
154  
155  
156  
156  
157  
157  
158  
158  
159  
159  
160  
161  
161  
162  
162  
163  
163  
164  
164  
165  
166  
166  
167  
167  
168  
168  
169  
169  
338  
339  
340  
341  
342  
343  
344  
345  
346  
347  
348  
349  
350  
351  
352  
353  
354  
355  
356  
357  
358  
359  
360  
361  
362  
363  
364  
365  
366  
367  
368  
369  
370  
371  
372  
373  
374  
375  
376  
377  
378  
379  
380  
381  
382  
383  
384  
385  
386  
387  
388  
170  
171  
171  
172  
172  
173  
173  
174  
174  
175  
176  
176  
177  
177  
178  
178  
179  
179  
180  
181  
181  
182  
182  
183  
183  
184  
184  
185  
186  
186  
187  
187  
188  
188  
189  
189  
190  
191  
191  
192  
192  
193  
193  
194  
194  
195  
196  
196  
197  
197  
198  
389  
390  
391  
392  
393  
394  
395  
396  
397  
398  
399  
400  
401  
402  
403  
404  
405  
406  
407  
408  
409  
410  
411  
412  
413  
414  
415  
416  
417  
418  
419  
420  
421  
422  
423  
424  
425  
426  
427  
428  
429  
430  
431  
432  
433  
434  
435  
436  
437  
438  
439  
198  
199  
199  
200  
201  
201  
202  
202  
203  
203  
204  
204  
205  
206  
206  
207  
207  
208  
208  
209  
209  
210  
211  
211  
212  
212  
213  
213  
214  
214  
215  
216  
216  
217  
217  
218  
218  
219  
219  
220  
221  
221  
222  
222  
223  
223  
224  
224  
225  
226  
226  
440  
441  
442  
443  
444  
445  
446  
447  
448  
449  
450  
451  
452  
453  
454  
455  
456  
457  
458  
459  
460  
461  
462  
463  
464  
465  
466  
467  
468  
469  
470  
471  
472  
473  
474  
475  
476  
477  
478  
479  
480  
481  
482  
483  
484  
485  
486  
487  
488  
489  
490  
227  
227  
228  
228  
229  
229  
230  
231  
231  
232  
232  
233  
233  
234  
234  
235  
236  
236  
237  
237  
238  
238  
239  
239  
240  
241  
241  
242  
242  
243  
243  
244  
244  
245  
246  
246  
247  
247  
248  
248  
249  
249  
250  
251  
251  
252  
252  
253  
253  
254  
254  
491  
492  
493  
494  
495  
496  
497  
498  
499  
500  
501  
502  
503  
504  
505  
506  
507  
508  
509  
510  
511  
512  
513  
514  
515  
516  
517  
518  
519  
520  
521  
522  
523  
524  
525  
526  
527  
528  
529  
530  
531  
532  
533  
534  
535  
536  
537  
538  
539  
540  
541  
255  
256  
256  
257  
257  
258  
258  
259  
259  
260  
261  
261  
262  
262  
263  
263  
264  
264  
265  
266  
266  
267  
267  
268  
268  
269  
269  
270  
271  
271  
272  
272  
273  
273  
274  
274  
275  
276  
276  
277  
277  
278  
278  
279  
279  
280  
281  
281  
282  
282  
283  
3-36  
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3.10 Simplified Wiring Diagrams  
3-37  
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3-39  
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3.11 Principal Wiring Connections  
N.C.  
N.O.  
LINE VOLTAGE (L1)  
C2 PIN 1  
T1  
T2  
AIR SWITCH  
(CE AND SOME  
EXPORT UNITS)  
LINE VOLTAGE (COM)  
C2 PINS 3 & 12  
COM  
(IN COMPONENT BOX)  
C1  
1
2
3
4
5
6
7
8
9
LINE VOLTAGE (L1)  
GROUND  
BLACK  
TO T1 & J3 PIN 11  
TO GROUND  
GREEN  
WHITE  
RED  
LINE VOLTAGE (COM)  
24VAC  
TO T2 & C5 PIN 2  
TO J1 PIN 8 & J3 PIN 8  
TO J3 PIN 3  
FROM TRANSFORMER BOX  
12VAC  
ORANGE  
BLUE  
12VAC  
TO J3 PIN 1  
HOOD RELAY  
LINE VOLTAGE (L1)  
LINE VOLTAGE (COM)  
WHITE/BLACK (CE = BROWN)  
TO J3 PIN 5 (12VDC)  
FILTER PAN SUCTION TUBE HEATER  
(BIH52 UNITS ONLY)  
LEFT VAT  
RIGHT OR FULL VAT  
FROM  
TO  
FROM  
TO  
FROM  
J3 PIN 1  
TO  
J1  
J2  
1
J3  
1
1
CONTROLLER (12VAC)  
GROUND  
C1 PIN 6 (12VAC)  
J2 PIN 1  
2
3
2
3
2
3
PROBE  
J2 PIN 14  
GROUND  
J3 PIN 3  
PROBE  
J2 PIN 14  
J2 PIN 3  
CONTROLLER (12VAC)  
RIGHT HEAT RELAY (K2)  
RELAYS (12VDC) & J3 PIN 5  
LEFT HEAT RELAY (K1)  
K5  
C1 PIN 5 (12VAC)  
4
4
4
CONTROLLER  
CONTROLLER  
CONTROLLER  
CONTROLLER  
5
5
5
J2 PIN 5  
PROBE  
C1 PIN 7  
J2 PIN 13  
6
6
6
PROBE  
J2 PIN 15  
7
7
7
8
8
8
C1 PIN 4 (24VAC)  
V2D  
LEFT PWR VIA K1  
GAS VALVE  
C1 PIN 4 (24VAC)  
V1S OR V1D  
RIGHT PWR VIA K2  
GAS VALVE  
9
9
9
CONTROLLER  
ALR (RIGHT)  
CONTROLLER  
AD (LEFT)  
K3  
10  
11  
12  
10  
11  
12  
10  
11  
12  
RIGHT ALARM OUT (FULL VAT)  
SOUND DEVICE  
C1 PIN 1 (L1)  
K4  
BLOWER VIA K4  
C5 PIN 2  
LEFT ALARM OUT (DUAL VAT)  
CONTROLLER  
13  
14  
15  
J3 PIN 6  
GROUND  
MODULE VALVE 1  
GND  
V2D  
PWR  
AD  
GROUND  
J1 PIN 9  
GROUND  
GND  
V1D  
PWR  
ALR  
V1S  
GROUND  
J3 PIN 9  
J1 PIN 2 & J3 PIN 2  
J1 PIN 6  
CONTROLLER  
MODULE VALVE 1 (DUAL VAT)  
J3 PIN 8 VIA K2  
CONTROLLER  
J1 PIN 8 VIA K1  
MODULE 25V  
J2 PIN 12  
MODULE 25V  
J2 PIN 10  
J3 PIN 9  
DRAIN SWITCH (BIH52 ONLY)  
DRAIN SWITCH (BIH52 ONLY)  
MODULE VALVE 1 (FULL VAT)  
AS  
CE CONFIGURATION  
V2S  
C3  
1
2
3
4
5
6
7
8
9
LINE VOLTAGE L1  
GROUND  
LINE VOLTAGE COM  
TO FILTER BOX (BIH52 ONLY)  
OIL RETURN SWITCH  
(BIH52 UNITS ONLY)  
1
OIL RETURN MANIFOLD SOLENOID VALVE  
(BIH52 UNITS ONLY)  
C2  
1
2
FROM T1, JUMPERED TO PIN 8  
GROUND, JUMPERED TO PIN 11  
FROM T2, JUMPERED TO PIN 9  
JUMPERED TO PIN 6  
JUMPERED TO PIN 7  
JUMPERED FROM PIN 4  
JUMPERED FROM PIN 5  
JUMPERED FROM PIN 1  
JUMPERED FROM PIN 3  
TO J1 PIN 10  
2
C3  
(CE)  
1
3
FILTER BOX  
PUMP RELAY  
4
5
PINS 1, 2 & 3  
SAME AS NON-CE  
2
3
4
5
6
7
6
BLUE  
TO OIL RETURN SWITCHES OF ADJACENT FRYERS  
TO OIL RETURN SWITCHES OF ADJACENT FRYERS  
7
ORANGE  
56C  
8
OIL RETURN HEATER  
(BIH52 UNITS ONLY)  
9
7P  
JUMPER TO PIN 4  
JUMPER TO PIN 5  
10  
11  
12  
13  
14  
15  
JUMPERED FROM PIN 2  
FROM T2  
C5  
1
J3 PIN 12  
BLOWER  
TO J1 PIN 7  
C4  
2
LINE VOLTAGE (COM)  
1
2
3
4
5
6
TO J3 PIN 10  
R
E
TO J3 PIN 7  
D
O
R
A
N
G
NOT USED ON H52 FRYERS  
E
B
L
U
E
3-42  
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3.12 Main Wiring Diagrams  
A D L O  
E N L I  
3-43  
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BIH52/MH52 Main Wiring Diagram (U.S. and Non-CE Export)  
Old Single-Spark Ignition Module  
COMPUTER OR  
CONTROLLER  
SOUND  
DEVICE  
TO J2  
WHT  
BLUE  
BLK  
GREEN  
1
2
3
GN  
D
GN  
D
ORG  
J
2
J
J
1
3
K
K
4R  
K
GND  
25  
V
GND  
25V  
ALAR  
VALV  
GN  
VD2  
ALAR  
3L  
5R  
VALV  
M
M
GN  
T
R
T
L
T
GRN  
BLK  
B/L  
B/L  
VALV  
VALV  
E
Y
For  
D
E
BLK  
RL  
RL  
V1  
D
D
25  
V
PWR  
Y
Y
R
E
GND  
E
25V  
A
D
GND  
BLUE  
ORG  
BLK  
L
RTL  
PWR  
(BURNER  
(BURNER  
)
ORG  
ORG  
A
AL  
D
RL  
T
K
)
Y
Y
For  
D
V2  
V1  
R
S
D
1
K
BLK  
S
S
GN  
GN  
2
1
2
6
3
4
5
D D1  
D9 D  
G
V
PW  
R
A
L
12 AI 24  
R
A
L
PW  
G
V
V
V
R
DETAIL  
A
A
COMPUTER GROUND (81C)  
DETAIL A-  
A
FULL  
VAT  
DUAL  
VAT  
WHITE  
WHITE  
T1  
T2  
TEMP  
TEMP  
PROBE  
PROBE  
HI-LIMIT  
HI-LIMIT  
BLK  
BLK  
11C  
18C  
SAFETY  
DRAIN  
SWITCH  
SAFETY  
DRAIN  
SWITCH  
NC  
NO  
NC  
NO  
BLK  
BLK  
BLK  
BLK  
COM  
COM  
FOR UNITS WITH NO  
FOR UNITS WITH NO  
SAFETY DRAIN SWITCH  
ADD IN-LINE SPLICE  
SAFETY DRAIN SWITCH  
ADD IN-LINE SPLICE  
C
1
2
12C  
13C  
5
MV  
MV  
MV  
MV  
BLK  
BLK  
GAS  
VALV  
E
GAS  
VALVE  
14C  
14C  
BLOWE  
R
Refer to "PRINCIPAL WIRING  
CONNECTIONS" on Page 3-42 for  
detail of connection points J1, J2,  
J3, C2, C3, and C5.  
8050502G  
3-44  
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BIH52/MH52 Main Wiring Diagram (U.S. and Non-CE Export)  
New Dual-Spark Ignition Module  
COMPUTER OR CONTROLLER  
TO J2  
SOUND DEVICE  
SOUND  
GND  
AIR  
SENSE 2  
1
GND 2  
3
J2  
SENSE 1  
FULL VAT  
12V  
J3  
J1  
K1  
K4  
ALARM(GND)  
VALVE(GND)  
24VAC(GND)  
ALARM  
VALVE  
GV  
LEFT  
BL  
RELAY  
RIGHT  
BL  
RELAY  
GND  
V2D  
PWR  
AD  
GV  
GND  
24VAC  
V1D  
PWR  
ALR  
V1S  
FV OR  
RIGHT DV  
HEAT  
BLOWER  
RELAY  
LEFT DV  
HEAT  
BLOWER  
RELAY  
AS  
V2S  
PWR  
24V  
&
TEMP  
&
PWR  
GND  
PROBE  
GND  
GND  
SPARK 2  
K2  
K3  
(BURNER)  
COMPUTER GROUND  
DETAIL  
SPARK 1  
HIGH  
LIMIT  
BLK  
A
A
SAFETY  
DRAIN  
SWITCH  
NC  
NO  
BLK  
BLK  
COM  
FULL VAT  
FOR UNITS WITH NO  
SAFETY DRAIN SWITCH  
ADD IN-LINE SPLICE  
LEFT IGNITOR  
RIGHT IGNITOR  
SOUND DEVICE  
MV  
MV  
BLK  
GAS  
VALVE  
SOUND  
1
2
GND  
3
GND  
AIR  
J3  
J2  
SENSE 2  
SENSE 2  
SENSE 1  
12V  
SENSE  
1
J1  
K1  
K4  
GV  
LEFT  
BL  
RELAY  
RIGHT  
BL  
RELAY  
GND  
V2D  
PWR  
ALARM(GND)  
VALVE(GND)  
24VAC(GND)  
ALARM  
VALVE  
GV  
ALARM(GND)  
VALVE(GND)  
24VAC(GND)  
ALARM  
VALVE  
GND  
V1D  
PWR  
ALR  
V1S  
AD  
AS  
24VAC  
24VAC  
FV OR  
RIGHT DV  
HEAT  
BLOWER  
RELAY  
LEFT DV  
HEAT  
BLOWER  
RELAY  
PWR  
24V  
&
&
V2S  
PWR  
GND  
GND  
K2  
K3  
GND  
(BURNER)  
GND  
(BURNER)  
SPARK 2  
SPARK 2  
DUAL VAT  
COMPUTER GROUND  
DETAIL  
SPARK 1  
SPARK 1  
A
A
TEMP  
PROBE  
DUAL VAT  
HIGH  
LIMIT  
BLK  
LEFT IGNITOR  
RIGHT IGNITOR  
OIL RETURN HEATER FRONT  
SAFETY  
DRAIN  
SWITCH  
NC  
NO  
BLK  
BLK  
TO C2 PIN1  
TO C2 PIN12  
TO C2 PIN3  
LINE VOLTAGE (L1)  
LINE VOLTAGE(COM)  
COM  
TO J3 PIN12  
WHITE  
FOR UNITS WITH NO  
SAFETY DRAIN SWITCH  
ADD IN-LINE SPLICE  
ALARM(GND)  
GV  
GND  
VALVE(GND)  
24VAC(GND)  
24VAC  
V1D  
MV  
MV  
PWR  
FUSE  
BLOWER  
ALR  
V1S  
BLK  
GAS  
VALVE  
INSET  
HONG KONG  
UNITS ONLY  
PWR  
Refer to "PRINCIPAL WIRING CONNECTIONS"  
on Page 3-43 for detail of connection points  
J1, J2, J3, C2, C3, and C5.  
8051315C/ 8051526B  
3-45  
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BIH52/MH52 Main Wiring Diagram (CE)  
Old Single-Spark Ignition Module  
COMPUTER OR CONTROLLER  
SOUND DEVICE  
TO J2  
J1 OPPOSITE  
J3 OPPOSITE  
SIDE  
SIDE  
WHITE  
BLACK  
BLUE  
GREEN  
ORANGE  
GND  
J2  
WHITE  
GND  
GND  
ALARM  
VALVE  
ALARM  
VALVE  
ORANGE  
GROUND  
GROUND  
25V  
GND  
25V  
GREEN  
BLUE  
VALVE  
VALVE  
V2D  
V1D  
GROUND  
(BURNER)  
GROUND  
(BURNER)  
25V  
25V  
PWR  
POWER  
ALARM  
A D  
A S  
V2S  
RELAY  
RELAY  
LEFT  
RIGHT  
FULL  
OR  
V1S  
DUAL  
GND  
GND  
DUAL  
DETAI  
L
A
A
COMPUTER GND (81C)  
DUAL VAT ONLY  
DETAIL A-A  
WHITE  
WHITE  
TEMP PROBE  
HI-LIMIT  
TEMP PROBE  
T
1
T
2
BLACK  
BLACK  
GREEN  
GREEN  
HI-LIMIT  
T
1
T
2
SAFETY DRAIN SWITCH  
SAFETY DRAIN SWITCH  
N
N
C
C
N
N
BLACK  
BLACK  
BLACK  
BLACK  
COM  
COM  
O
O
FOR UNITS WITH NO  
FOR UNITS WITH NO  
SAFETY DRAIN SWITCH  
ADD IN-LINE SPLICE  
SAFETY DRAIN SWITCH  
ADD IN-LINE SPLICE  
OIL  
RETURN  
HEATER FRONT  
BLOWER  
TO J3  
PIN12  
1
2
C5  
GAS VALVE  
GAS VALVE  
Refer to "PRINCIPAL WIRING  
CONNECTIONS" on Page 3-42 for  
detail of conncection points J1, J2,  
J3, C2, C3, and C5.  
8050526D  
3-46  
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T1  
T2  
T - 4  
A
0 V / 5 2 4 V  
3-47  
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MH152 Transformer Wiring Diagram (U.S. and Non-CE Export)  
COM  
36C BLK  
2C GRN/YLW  
3
1
2
1 2 3  
4 5 6  
7 8 9  
25C  
NO  
4
NC  
5
6C  
BLUE  
7C ORG  
3C WHT  
1C  
BLK  
9C  
WHT  
11C WHT  
10C BLK  
8C BLK  
26C  
WHT  
1
2
4
9
5
8
6
7
1
2
3
N
12 11 10  
BLACK  
RED  
ORANGE WHITE  
5C ORG  
4C RED  
12C  
WHT  
NOTE: USE TERMINALS 7 AND 8 FOR 24V OUTPUT.  
USE TERMINALS 11 AND 12 FOR 12V OUTPUT.  
C
O
R
D
S
E
T
120V CONFIGURATION SHOWN  
VOLTS COM LINE  
100  
120  
208  
220  
230  
240  
1
1
1
1
1
1
4
6
2
4
5
6
8050504C  
3-48  
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MH152 Transformer Wiring Diagram (CE)  
COM  
3
36C BLK  
1
2
2C GRN/YLW  
NC  
5
NO  
4
25C  
1 2 3  
4 5 6  
7 8 9  
6C  
BLUE  
7C ORG  
3C WHT  
9C  
WHT  
1C  
BLK  
11C WHT  
10C BLK  
8C BLK  
26C  
WHT  
1
2
3
4
9
5
6
7
12 11 10  
8
1 2  
3
3
N
N
5C ORG  
12C  
WHT  
4C RED  
NOTE: USE TERMINALS 7 AND 8 FOR 24V OUTPUT.  
USE TERMINALS 11 AND 12 FOR 12V OUTPUT.  
GRN/YLW  
BRN  
BLUE  
230V/1Ø/50HZ  
INCOMING POWER  
8050529B  
3-49  
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3-50  
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3-51  
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3-52  
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3-53  
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CHAPTER 4: PARTS LIST  
4.1  
Accessories  
1
4
3
2
5
6
9
10  
8
7
12  
11  
ITEM  
PART #  
803-0209 Brush, Frypot Cleaning  
803-0197 Fryer’s Friend 27" (Clean-out Rod)  
806-3068 Cover, Full-Vat Frypot  
COMPONENT  
1
2
3
4
*
5
6
8
7
9
806-3407 Cover, Dual-Vat Frypot  
826-0993SP Kit, Replacement Cover Handle  
803-0132 Rack, Full-Vat Basket Support  
803-0133 Rack, Dual-Vat Basket Support  
826-0900 Kit, Chain Restraint  
910-7443 Top Connecting Strip  
Coupling, Gas Line Female Quick-Disconnect  
810-0070  
810-0073  
¾-inch  
1-inch  
*
10  
11  
12  
*
810-0478 Gas Line, Flexible, with Cut-Off Valve  
813-0032 Bushing, Flexible Gas Line  
812-1378 Drain Extension, Non-Filter Full Vat Fryer  
812-1374 Drain Extension, Non-Filter Dual Vat Fryer  
803-0271 Basket, Twin  
*
826-1157 Kit, Fuse and Fuse Puller  
*
*
*
803-0002 Powder, Filter – Approximately 100 Cups  
803-0046 Cup, Plastic Filter Powder Measuring  
803-0170 Filter Pack – 100 Sheets  
* Not illustrated.  
4-1  
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4.2  
Cabinetry Components  
4.2.1 BIH152 and MH152 Cabinet Components  
3
10  
1
4
9
18  
16  
2
17  
18  
14  
12  
26  
27  
21  
BIH152  
13  
23  
22  
28  
8
20  
7
5
9
19  
28  
6
15  
11  
21  
24  
26  
25  
MH152  
27  
4-2  
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4.2.1 BIH152 and MH152 Cabinet Components cont.  
ITEM  
PART #  
COMPONENT  
1
2
3
4
5
911-7688SP Side, BIH52 Left  
912-7688SP Side, BIH52 Right  
900-5521 Back, BIH152 Upper  
900-5670 Back, BIH152 Lower  
Side, MH52 Left  
911-7036SP  
911-7688SP  
Before 6 Nov 2000  
After 5 Nov 2000  
Side, MH52 Right  
Before 6 Nov 2000  
After 5 Nov 2000  
Back, MH152 Lower  
Before 6 Nov 2000  
After 5 Nov 2000  
Back, MH152 Upper  
Before 6 Nov 2000  
After 5 Nov 2000  
6
7
8
912-7036SP  
912-7688SP  
900-2654  
900-5670  
900-2410  
900-5521  
9
900-4180 Brace, BIH152/MH152 Top  
10  
11  
900-5519 Brace, BIH152 Rear (and MH152 after 5 Nov 2000)  
Channel, MH52 Cabinet Base Left and Right Side  
900-7035  
900-7687  
Before 6 Nov 2000  
After 5 Nov 2000  
12  
13  
14  
15  
16  
17  
18  
19  
901-5526 Channel, BIH152 Base Left Side  
902-5526 Channel, BIH152 Base Right Side  
900-4389 Channel, BIH152 Base Rear  
900-4179 Channel, MH152 Cabinet Base Front and Rear  
806-8421 Rail Assembly, BIH152  
910-5656 Leg, BIH152 Front  
823-2579 Bracket, BIH152 Filter Motor Mount  
Shield, MH152 Base  
900-2541  
200-0075  
Before 6 Nov 2000  
After 5 Nov 2000  
20  
21  
22  
23  
*
900-2649 Cover, MH52 Rear Access (notch on right)  
806-5209 Leg Pad Assembly  
812-1326 Caster, BIH152 Rear  
823-2844 Caster, BIH152 Front (on units built prior to Nov 2000, use 823-2582)  
810-1414 Insert, BIH152 Square Leg (component of Item 23, adapts caster to leg)  
810-0327 Caster, Rear (without brake)  
24  
25  
Caster, Adjustable Front (with brake)  
810-0326  
810-0944  
Before 6 Nov 2000  
After 5 Nov 2000  
26  
27  
28  
809-0191 Washer, ¼-inch Lock  
826-1389 Screw, ¼-20 x ¾-inch Hex Head (Pkg. of 10)  
826-1374 Screw, #10 x ¾-inch Washer Hex Head (cabinet screw) (Pkg. of 25)  
* Not illustrated.  
4-3  
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4.2.2 BIH52 Cabinet Components (Batteries)  
4-4  
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4.2.2 BIH152 Cabinet Components (Batteries) cont.  
ITEM  
PART #  
COMPONENT  
1
2
911-7688SP Side, Left Cabinet (all models)  
912-7688SP Side, Right Cabinet (all models)  
3
4
5
6
7
*
8
9
900-7714  
900-9424  
900-7712  
900-9425  
901-1810  
902-1810  
901-1948  
911-4690  
912-4690  
910-5244  
900-1959  
900-1957  
809-0422  
809-0189  
809-0053  
900-7687  
Back, Upper Cabinet (BIH252, BIH452 & BIH552)(900-2881 BIMH452)  
Back, Upper Cabinet (BIH352 and BIH552)  
Back, Lower Cabinet (BIH252, BIH452 and BIH552)  
Back, Lower Cabinet (BIH352 and BIH552)  
Gusset, Left Cabinet (all models)  
Gusset, Right Cabinet (BIH252)  
Channel, Universal Side Support (all models)  
Rail, Left Top Filter (all models)  
Rail, Right Top Filter (all models)  
Rail, Universal Filter (all models)  
Bracket, Filter Lock Mounting (all models)  
Lock, Filter (all models)  
Screw, 10-32 x .4-inch Shoulder (all models)  
Washer, ¼-inch SS Flat  
Nut, 10-32 Hex  
Channel, Side Base (all models)  
*
10  
11  
12  
13  
14  
15  
16  
17  
Channel, Rear Base  
900-7686  
900-9420  
900-2390  
900-9555  
BIH252  
BIH352  
BIH452  
BIH552  
18  
Channel, Front Base  
900-4787  
900-2389  
9009556  
806-5209  
809-0191  
826-1389  
810-0944  
810-0327  
BIH352  
BIH452  
BIH552  
19  
20  
21  
22  
23  
24  
Leg Pad Assembly (all models)  
Washer, ¼-inch Lock (all models)  
Screw, ¼-20 x ¾-inch Hex Head (all models) (Pkg. of 10)  
Caster with Brake, Front (all models)  
Caster, Rear (all models)  
Shield  
900-2452  
900-2453  
900-9601  
826-1374  
900-4798  
900-2562  
BIH352  
BIH452  
BIH552  
25  
26  
27  
28  
Screw, #10 x ½-inch Hex Washer Head (cabinet screw)(Pkg. of 25)  
Support, Long Cross (all models – not used on CE units)  
Support, Short Cross (all models – not used on CE units)  
Brace, Top Front  
900-7033  
900-9248  
900-2393  
900-9558  
BIH252  
BIH352  
BIH452  
BIH552  
29  
Brace, Top Rear  
900-7708  
900-7709  
BIH252  
BIH352  
* Not illustrated.  
LIST CONTINUED ON NEXT PAGE  
4-5  
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4.2.2 BIH52 Cabinet Components (Batteries) cont.  
ITEM  
PART #  
900-2391  
900-9557  
COMPONENT  
BIH452  
BIH552  
30  
31  
32  
900-7710 Post, Cabinet (all models)  
900-7358 Divider, Cabinet (all models)  
Post, Short Door  
900-4797  
900-2437  
All non-CE models.  
All CE models.  
33  
*
900-4799 Post, Long Door (BIH352, BIH452 and BIH552)  
809-0413 Spacer, Door Post (1/4-inch ID x 4mm nylon washer)  
* Not illustrated.  
4.2.3 MH52 Cabinet Components (Batteries)  
NOTE: MH52 cabinetry was standardized with BIH52 cabinetry beginning with units manufactured 6  
November 2000 and later. All MH52 cabinetry components except base assembly parts on units  
manufactured after 6 November 2000 are the same as those on BIH52 units of the same size.  
6
4
5
8
9
1
2
19  
20  
21  
3
22  
7
13  
13  
23  
11  
11  
10  
17  
12  
14  
10  
18  
Detail of Base  
Assembly Construction  
15  
16  
4-6  
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4.2.3 MH52 Cabinet Components (Batteries) cont.  
ITEM  
PART #  
COMPONENT  
1
Side, Left Cabinet (all models)  
Before 6 Nov 2000  
After 5 Nov 2000  
Side, Right Cabinet (all models)  
Before 6 Nov 2000  
After 5 Nov 2000  
Back, Lower Cabinet  
Before 6 Nov 2000  
MH252  
911-7036SP  
911-7688SP  
2
3
912-7036SP  
912-7688SP  
900-2652  
900-2651  
900-4915  
900-9600  
MH352  
MH452  
MH552  
After 5 Nov 2000  
900-7712  
900-9425  
MH252, MH452, and MH552 (18-inches x 31-inches)  
MH352 and MH552 (18-inches x 46.5-inches)  
Back, Upper Cabinet, MH252 and MH552  
Before 6 Nov 2000 (10.2-inches x 31.1-inches)  
After 5 Nov 2000 (18.72-inches x 31.24-inches)  
Back, Upper Cabinet, MH352 and MH552  
Before 6 Nov 2000 (10.2-inches x 46.6-inches)  
After 5 Nov 2000 (18.72-inches x 46.88-inches)  
Back, Upper Cabinet, MH452  
Before 6 Nov 2000 (9.66-inches x 62.36-inches)  
After 5 Nov 2000 (18.72-inches x 31.24-inches)  
Brace, Top Front  
4
5
*
6
900-2411  
900-7714  
900-2412  
900-9424  
900-2413  
900-7714  
900-7033  
900-9248  
900-2393  
900-9558  
MH252  
MH352  
MH452  
MH552  
*
7
Brace, Top Rear (used only on units built after 05 Nov 2000)  
MH252  
MH352  
MH452  
MH552  
900-7708  
900-7709  
900-2391  
900-9557  
Post, Door (all models)  
900-7032  
900-4799  
809-0413  
Before 6 Nov 2000  
After 5 Nov 2000  
Spacer, Door Post (1/4-inch ID x 4mm nylon washer )  
Divider, Cabinet (all models)  
Before 6 Nov 2000  
*
8
900-7356  
900-7358  
After 5 Nov 2000  
9
Brace, Back Support (all models)  
Before 6 Nov 2000  
After 5 Nov 2000  
900-7053  
900-7710  
10  
Channel, Cabinet Base Left and Right Side (all models)  
Before 6 Nov 2000  
After 5 Nov 2000  
900-7035  
900-7687  
* Not illustrated.  
LIST CONTINUED ON NEXT PAGE  
4-7  
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4.2.3 MH52 Cabinet Components (Batteries) cont.  
ITEM  
PART #  
COMPONENT  
Channel, Cabinet Base Front and Rear  
11  
MH252  
900-7034  
900-7686  
Before 6 Nov 2000  
After 5 Nov 2000  
MH352  
900-9249  
900-9420  
Before 6 Nov 2000  
After 5 Nov 2000  
MH452  
900-4906  
900-2390  
Before 6 Nov 2000  
After 5 Nov 2000  
MH552  
900-9611  
900-9555  
Before 6 Nov 2000  
After 5 Nov 2000  
12  
13  
Support, Center Base (MH452, MH552)  
Before 6 Nov 2000  
After 5 Nov 2000  
900-4907  
200-0769  
Shield, Cabinet Base  
MH252, MH452  
900-2527  
200-0772  
Before 6 Nov 2000 (18-inches x 25.2-inches) (MH452 uses 2)  
After 5 Nov 2000 (17.75-inches x 25.06-inches) (MH452 uses 2)  
MH352  
900-2528  
200-0771  
Before 6 Nov 2000 (18-inches x 17.5-inches) plus 900-2527  
After 5 Nov 2000 (17.75-inches x 40.7-inches)  
MH552  
900-9623  
Before 6 Nov 2000 (18-inches x 33-inches)  
After 5 Nov 2000 uses 1 each of 200-0771 and 200-0772  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
806-5209 Leg Pad Assembly (all models)  
810-0944 Caster with Brake, Front (all models)  
810-0327 Caster, Rear (all models)  
809-0191 Washer, ¼-inch Lock (all models)  
826-1389 Screw, ¼-20 x ¾-inch Hex Head (all models) (Pkg. of 10)  
900-2648 Cover, MH52 Rear Access (no notch)  
900-2649 Cover, MH52 Rear Access (notch on right corner when viewed from rear)  
900-2650 Cover, MH52 Rear Access (notch on left corner when viewed from rear)  
900-5482 Cover, MH52 Rear Access (notch in center)  
826-1374 Screw, #10 x ½-inch Hex Washer Head (cabinet screw) (Pkg. of 25)  
* Not illustrated.  
4-8  
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4.2.4 BIH52/MH52 Cap-N-Splash Assemblies, Fluecaps, Standoffs and Related Parts  
1
2
3
4
Fluecap  
Assemblies  
5
6
7
8
10  
Cap-N-Splash  
Assemblies  
11  
12  
9
15  
13  
14  
16  
17  
Standoffs  
18  
24  
26  
25  
22  
23  
NOTE: Items 19 through 26 are shown  
disproportionately larger than other  
items for clarity.  
Basket Hangers and  
Mounting Hardware  
21  
19  
20  
28  
27  
4-9  
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ITEM  
PART #  
COMPONENT  
Fluecap Assemblies  
1
2
3
4
5
6
7
8
9
*
910-2414  
900-7921  
823-2544  
900-7926  
823-2545  
900-7927  
823-2546  
900-7928  
823-2887  
BIH152/MH152 (standard)  
BIH152/MH152 (for units with Cap-N-Splash)  
BIH252/MH252 (standard)  
BIH252/MH252 (for units with Cap-N-Splash)  
BIH352/MH352 (standard)  
BIH352/MH352 (for units with Cap-N-Splash)  
BIH452/MH452 (standard)  
BIH452/MH452 (for units with Cap-N-Splash)  
BIH552/MH552 (standard)  
900-2447 Flue Clip Support  
Old  
Cap-N-Splash Assemblies (See Note)  
10  
11  
12  
13  
14  
*
823-2276  
823-2277  
823-2833  
823-2278  
823-2879  
823-2279  
-----  
BIH152/MH152 (New 823-3066) Kit 826-1223  
BIH252/MH252 (New 823-3067) Kit 826-1218  
JBIH252 (Japanese units)  
BIH352/MH352 (New 823-3068) Kit 826-1217  
JBIH352 (Japanese units)  
BIH452 (New 823-3070) Kit 826-1216  
BIH552 (New 823-3069)  
*
Standoffs  
15  
16  
17  
18  
*
900-2406  
900-2407  
900-2408  
900-2409  
200-6556  
BIH152/MH152  
BIH252/MH252  
BIH352/MH352  
BIH452/MH452  
BIH552/MH552  
Basket Hangers and Mounting Hardware  
Solid (old design)  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
823-0782  
823-1618  
810-2793  
809-0171  
809-0402  
826-1351  
809-0535  
809-0079  
809-0921  
809-0989  
Solid (new design) for drop in probes  
Wire Form (with .330-inch mounting holes)  
Thumbscrew, ¼-20 x 1-inch  
Thumbscrew, ¼-20 x ½-inch  
Nutsert, ¼-20 Square (for use on standard fluecap) (Pkg. of 10)  
T-Nut, ¼-20 x 7/16-inch (for use on Cap-N-Splash assembly)  
Nutsert, ¼-20 Round (for use on early-production Cap-N-Splash)  
Spacer, Basket Hanger  
Thumbscrew, ¼-20 x 1-inch  
* Not illustrated.  
NOTE: In August 2001, a design change required that all models above serial # 0108  
replacing the Cap-N-Splash must also replace the topcap. The new topcap and Cap-N-  
Splash are not interchangeable with the previous one.  
4-10  
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4.2.5 BIH52/MH52 Control Panel Frames and Topcaps  
1
2
BIH52/MH52  
Control Panel Frames  
3
4
6
5
14  
8
7
10  
15  
9
MH52  
Topcaps  
12  
16  
11  
17  
13  
BIH52  
Topcaps  
ITEM  
PART #  
COMPONENT  
1
2
3
4
5
806-6137SP BIH152/MH152 Control Panel Frame Assembly  
806-4819SP BIH252/MH252 Control Panel Frame Assembly  
806-4820SP BIH352/MH352 Control Panel Frame Assembly  
806-5963SP BIH452/MH452 Control Panel Frame Assembly  
806-9750 BIH552/MH552 Control Panel Frame Assembly  
Older  
Topcaps – See Note on previous page.  
6
824-0641  
BIH152 Topcap (New 823-0873) w/out hole in front.  
7
823-2657 JBIH152 Topcap (Japanese units)  
8
824-0544  
BIH252 Topcap (New 823-0874) w/out hole in front.  
9
823-2652 JBIH252 Topcap (Japanese units)  
10  
11  
12  
13  
14  
15  
16  
17  
824-0543  
BIH352 Topcap (New 823-0875) w/out hole in front.  
823-2651 JBIH352 Topcap (Japanese units)  
824-0545  
824-0775  
824-0641 MH152 Topcap  
824-0544 MH252 Topcap  
824-0543 MH352 Topcap  
824-0545 MH452 Topcap  
BIH452 Topcap (New 823-0876) w/out hole in front.  
BIH552 Topcap (New 823-0877) w/out hole in front.  
4-11  
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4.2.6 BIH52/MH52 Door Components  
4
5
1
2
8
6
3
9
10  
Inside Face  
of Door  
Inside Face  
of Door  
11  
12  
7
5
ITEM  
PART #  
COMPONENT  
1
2
3
4
5
*
6
7
8
9
806-3057SP Door Assembly with Magnet, BIH52/MH52 Complete  
806-6545SP Door Assembly without Magnet, BIH52/MH52 Complete  
810-1422 Handle, Wireform Door  
826-1379 Screw, #10 x ½-inch Phillips Truss Head (Pkg of 10)  
810-1508 Hinge, Universal Door  
826-1371 Screw, #8 x ½-inch Hex Head (Pkg of 25) (for attaching Item 5 to cabinet)  
806-4487SP Pin Assembly, Door Hinge  
809-0193 Washer, ¼-inch Nylon Flat  
826-1343 Spring, Door Hinge (Pkg. of 10)  
Liner, Door  
900-2485  
930-3667  
BIH52/MH52 Universal Door (no cutout for magnet)  
BIH52/MH52 Door (with cutout for magnet)  
10  
11  
12  
824-0137 Panel, BIH52/MH52 Door  
810-0066 Magnet (door-mounted, used with Item 1)  
810-1105 Magnet (door post-mounted, used with Item 2)  
* Not illustrated.  
NOTE: Handle (Item 3), Hinge (Item 5), and Washer (Item 7) are not included in Door Assemblies  
(Items 1 and 2). These components must be ordered separately.  
4-12  
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4.3  
Combustion System, Frypot and Gas System Components  
4.3.1 Blowers and Associated Parts  
1
2
4
6
3
8
7
5
ITEM  
PART #  
COMPONENT  
1
Blower, Left (with 1.54-inch (3.91 cm) narrow housing)  
106-2996SP  
106-2994SP  
806-5841SP  
106-2995SP  
100V, 50/60 Hz  
115V, 50/60 Hz  
230V, 50 Hz  
240V, 50/60 Hz  
2
Blower, Right (with 1.54-inch (3.91 cm) narrow housing)  
806-4697SP  
106-2997SP  
806-7060SP  
106-2998SP  
100V, 50/60 Hz  
115V, 50/60 Hz  
230V, 50 Hz  
240V, 50/60 Hz  
3
4
106-3000SP Blower Assembly, Left 230V, 50/60 Hz (with 2.8-inch (7.11 cm) wide housing)  
CE and Non-CE  
106-3001SP Blower Assembly, Right 230V, 50/60 Hz (CE) (with 2.8-inch (7.11 cm) wide  
housing)  
5
6
7
8
*
806-9689  
900-8699  
826-1382  
826-1426  
Finger Guard/Air Flow Inhibitor Adapter (CE)  
Air Flow Inhibitor (CE)  
Wingnut, 8-32 (Pkg. of 10)  
Shield, MH52 Blower Motor  
KIT-0155SP High Altitude Blower Kit (required above 5000 Ft, 1525 M)  
* Not illustrated.  
NOTE: Items 5, 6, and 7 are components of Items 3 and 4. In CE units, they replace the rotating air shutter  
that is standard on 230V Blowers 106-3000SP and 106-3001SP (Items 3 and 4).  
4-13  
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4.3.2 Ignition Sub-System Components  
2
1
7
3
5
4
6
8
10  
9
ITEM  
PART #  
COMPONENT  
1
2
*
3
4
See Pg. 4-27 Ignition Module, Full and Dual Vat (original design, with fuse)  
See Pg. 4-27 Ignition Module, Full Vat (new design, without fuse)  
826-1346  
Spacer (Pkg. of 10)  
See Pg. 4-27 Ignition Module, Dual Vat (new design, without fuse)  
Ignition Cable (with two 90º connectors, used with Item 1 only)  
807-1878  
807-1200  
826-1721  
807-3483  
807-3484  
19-inches long  
27-inches long  
5
Ignition Cable w/ Rajah (with 90º connector, use w/ Items 2 and 3)  
Cable, H52 Ignition 21”  
Connector, Rajah  
6
7
8
*
9
806-6085SP Wiring Assembly, Ignitor  
806-6084SP Wiring Assembly, Ignition Module  
807-2263  
KIT1428  
Switch, Air Pressure (use 807-2262 in units with 100VAC power supply)  
CE Export H52 Air Switch Kit  
Ignitor and Gasket Kit (816-0059 Gasket Only)  
Natural Gas (G20, G25)  
Propane/Butane (G30, G31)  
826-0981  
826-0982  
826-1002  
Manufactured Gas  
10  
Orifice  
810-1221  
810-1325  
810-0386  
810-0413  
812-1028  
812-1134  
810-0403  
810-0437  
812-1144  
812-1145  
810-0642  
826-1196  
826-1197  
2.00 mm Propane/Butane (0-4999 Ft, 0-1524 M) (Japan)  
2.05 mm Propane/Butane (G30, G31) (0-4999 Ft, 0-1524 M)  
2.10 mm Propane/Butane (0-4999 Ft, 0-1524 M) Standard LP  
2.16 mm Propane/Butane (G30, G31) (5000-6999 Ft, 1525-2133 M)  
2.20 mm Propane/Butane (G30, G31) (7000-10,999 Ft, 2134-3352 M)  
3.10 mm Natural Gas (G20, G25) (0-4999 Ft, 0-1524 M) (Japan)  
3.40 mm Natural Gas (G20, G25) (0-4999 Ft, 0-1524 M)Standard Natural Gas  
3.60 mm Natural Gas (G20, G25) (5000-6999 Ft, 1525-2133 M)  
3.65 mm Natural Gas (G20, G25) (7000-8999 Ft, 2134-2743 M)  
3.70 mm Natural Gas (G20, G25) (9000-10,999 Ft, 2744-3352 M)  
5.95 mm Manufactured Gas (0-4999 Ft, 0-1524 M)  
*
*
Conversion Kit, Natural Gas (G20, G25) to Propane/Butane (G30, G31) CE  
Conversion Kit, Propane/Butane (G30, G31) to Natural Gas (G20, G25) CE  
* Not illustrated.  
4-14  
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4.3.3  
Frypot Assembly Components  
4.3.3.1 Full Vat  
4-15  
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ITEM  
1
PART #  
823-0969  
826-1372  
826-1383  
816-0057  
900-1049  
826-1371  
826-1368  
810-0500  
COMPONENT  
Plenum (NOTE: use 823-1048 on units equipped with Air Switch)  
Nut, ¼-20 Hex (Pkg of 10)  
Washer, ¼-inch x ¾-inch Flat (Pkg. of 5)  
Gasket, Plenum  
2
3
4
5
6
7
8
Retainer, Plenum Gasket  
Screw, #8 x ½-inch Hex Head (Pkg of 25)  
Nut, ¼-20 Serrated Flange (Pkg. of 10)  
Spacer, ¼-inch x 15/16-inch  
9
823-11691SP Retainer, Full Vat Left Outer Combustion Chamber Insulation  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
823-1169SP  
816-0561  
826-1340  
900-1031  
812-0356  
814-0048SP  
200-0935  
200-0934  
812-0457  
200-2227  
816-0560  
824-0863  
824-0864  
812-0404  
Retainer, Full Vat Right Outer Combustion Chamber Insulation  
Insulation, Full Vat Combustion Chamber Outer  
Spacer, ¼-inch x 1 3/16-inch (Pkg of 10)  
Retainer, Sight Glass  
Gasket, Sight Glass  
Sight Glass  
Retainer, Full Vat Left Inner Combustion Chamber Insulation  
Retainer, Full Vat Right Inner Combustion Chamber Insulation  
Insulation, Full Vat Inner Combustion Chamber  
Retainer, Full Vat Frypot Outer Front Insulation  
Insulation, Full Vat Frypot Outer Front  
Seal, Full Vat Frypot Left  
Seal, Full Vat Frypot Right  
Insulation, Frypot Seal  
Kit, Burner Replacement (for use on either side; includes Item 25)  
Natural and Propane Gas  
826-1072  
826-1073  
816-0577  
823-3142  
823-1777  
812-1029  
900-4452  
812-0355  
200-0936  
200-0937  
900-1221  
810-0406  
930-0818  
806-5859SP  
812-0993  
900-1515  
900-0857  
900-1401  
809-0362  
812-0706  
900-4253  
910-2474  
813-0156  
813-0336  
Manufactured Gas  
Insulation, Burner  
Rail, Full Vat Right Burner  
Rail, Full Vat Left Burner  
Insulation, Frypot Side  
Retainer, Frypot Side Insulation  
Insulation, Full Vat Rear Combustion Chamber  
Back, Left Full Vat Combustion Chamber  
Back, Right Full Vat Combustion Chamber  
Retainer, Full Vat Combustion Chamber Back  
Spacer, ¼-inch x 1 7/16-inch  
Bracket, Flue to Frypot Mounting  
Flue Assembly, Full Vat  
Insulation, Frypot Upper  
Retainer, Frypot Upper Insulation  
Bracket, BIH52 Frypot Mounting  
Bracket, MH52 Frypot Mounting  
Screw, #8 x 1-inch Hex Washer Head  
Insulation, Burner Rail  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
*
Strip, Fluecap Retainer  
Pot-to-Pot Gap Clip  
Plug, ½-inch NPT (for blocking off unneeded ports in service frypot)  
Plug, ½-inch NPT SS (for blocking off unneeded ports in service frypot)  
*
*
* Not illustrated.  
4-16  
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4.3.3.2 Dual Vat  
4-17  
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ITEM  
PART #  
COMPONENT  
1
Plenum  
823-0970SP  
823-1049  
823-2181  
826-1372  
826-1383  
816-0057  
900-1049  
826-1371  
826-1368  
810-0500  
Standard Dual Vat  
For use on units with Air Switch. HE Dual Vat European  
For use on JBIH152 models only.  
Nut, ¼-20 Hex (Pkg of 10)  
Washer, ¼-inch x ¾-inch Flat (Pkg. of 5)  
Gasket, Plenum  
2
3
4
5
6
Retainer, Plenum Gasket  
Screw, #8 x ½-inch Hex Head (Pkg of 25)  
Nut, ¼-20 Serrated Flange (Pkg. of 10)  
Spacer, ¼-inch x 15/16-inch  
7
8
9
823-0968SP Retainer, Dual Vat Outer Combustion Chamber Insulation  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
816-0558  
826-1340  
900-1031  
812-0356  
Insulation, Dual Vat Combustion Chamber Outer Lower  
Spacer, ¼-inch x 1 3/16-inch (Pkg of 10)  
Retainer, Sight Glass  
Gasket, Sight Glass  
814-0048SP Sight Glass  
823-0983SP Retainer, Dual Vat Inner Combustion Chamber Insulation  
812-0458  
930-3628  
816-0559  
824-0865  
824-0866  
812-0404  
Insulation, Dual Vat Inner Combustion Chamber  
Retainer, Dual Vat Frypot Outer Front Insulation  
Insulation, Dual Vat Frypot Outer Front  
Seal, Dual Vat Frypot Left  
Seal, Dual Vat Frypot Right  
Insulation, Frypot Seal  
Kit, Burner Replacement (for use on either side; includes Item 23)  
Natural and Propane Gas  
Manufactured Gas  
826-1072  
826-1073  
816-0577  
823-2823  
823-2822  
812-1029  
900-4452  
809-0362  
812-0354  
200-0941  
900-0914  
812-0688  
930-0818  
810-0406  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
*
Insulation, Burner  
Rail, Dual Vat Right Burner Side W/A  
Rail, Dual Vat Left Burner Side W/A  
Insulation, Frypot Side  
Retainer, Frypot Side Insulation  
Screw, #8 x 1-inch Hex Washer Head  
Insulation, Dual Vat Rear Combustion Chamber  
Back, Dual Vat Combustion Chamber  
Retainer, Dual Vat Combustion Chamber Back  
Insulation, Dual Vat Gas Collector  
Bracket, Flue to Frypot Mounting  
Spacer, ¼-inch x 1 7/16-inch  
106-1018SP Flue Assembly, Dual Vat  
812-0993  
900-1515  
900-0857  
900-1401  
812-0706  
900-4253  
824-0541  
910-2474  
813-0156  
813-0336  
Insulation, Frypot Upper  
Retainer, Frypot Upper Insulation  
Bracket, BIH52 Frypot Mounting  
Bracket, MH52 Frypot Mounting  
Insulation, Burner Rail  
Strip, Fluecap Retainer  
Riser, DV Pot Divider W/A  
Pot-to-Pot Gap Clip  
Plug, ½-inch NPT BM (for blocking off unneeded ports in service frypot)  
Plug, ½-inch NPT SS (for blocking off unneeded ports in service frypot)  
*
*
* Not illustrated.  
4-18  
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4.3.4 Service Frypot Kits, Insulation Kits, and Miscellaneous Service Parts  
Service Frypot Kits  
The fully assembled service frypot kits listed below contain all components illustrated on Pages  
4-15 and 4-17 except the plenum, and the plenum gasket retainer. The kits also contain two  
Ignitor Gaskets (816-0059). These service frypot kits are ready for installation.  
106-1043SP – Full Vat (Manufactured Gas)  
106-1049SP – Full Vat (Natural Gas (G20/G25)  
106-1050SP – Full Vat (Propane/Butane (G30/G31))  
106-1066SP – Dual Vat (Manufactured Gas)  
106-1079SP – Dual Vat (Natural Gas (G20/G25))  
106-1080SP – Dual Vat (Propane/Butane Gas (G30/G31))  
Insulation Kits, Complete  
The insulation kits listed below contain all insulation illustrated on Pages 4-15 and 4-17,  
respectively. The kits also contain two Ignitor Gaskets (816-0059), two Sight Glasses (814-  
0048SP), two Plenum Gaskets (816-0057), one Upper Frypot Insulation Retainer (900-1515),  
and all spacers, screws, nuts, and washers required for installing the insulation.  
826-0929 – Full Vat  
826-0930 – Dual Vat  
Insulation Kits, Burner  
826-0931 – Full Vat  
This kit includes the components listed. Item numbers refer to illustration on Page 4-15.  
816-0577 – Insulation, Burner (Item 25) (3 each)  
812-0457 – Insulation, Full Vat Inner Combustion Chamber (Item 18) (1)  
812-0355 – Insulation, Full Vat Rear Combustion Chamber (Item 30) (1)  
816-0057 – Gasket, Plenum (Item 4) (2 each)  
826-0932 – Dual Vat  
This kit includes the components listed. Item numbers refer to illustration on Page 4-17.  
816-0577 – Insulation, Burner (Item 23)  
812-0458 – Insulation, Dual Vat Inner Combustion Chamber (Item 17) (1)  
812-0354 – Insulation, Dual Vat Rear Combustion Chamber (Item 29) (1)  
816-0057 – Gasket, Plenum (Item 4)  
Miscellaneous Frypot Service Parts  
210-0681 – Probe Guard  
806-6142SP – Riser Assembly, Flue (replaces upper section of Flue Assemblies 806-5859SP  
and 106-1018SP.)  
900-2298 – Shutter, BIH152 Plenum  
4-19  
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4.3.5 Gas Manifolds – Single BIH52/MH52 Units  
7
10  
1
5
8
2
9
17  
16  
3
13  
12  
4
5
11  
5
10  
18  
1-piece MH152 Manifold  
14  
6
15  
1
BIH152 Manifold  
ITEM  
1
PART #  
COMPONENT  
813-0165 Elbow, ½-inch NPT Street x 90º  
813-0265 Nipple, ½-inch NPT x 2½-inch  
813-0003 Tee, ½-inch NPT  
2
3
4
5
6
813-0093 Nipple, ½-inch NPT x 4-inch  
813-0062 Elbow, ½-inch NPT x 90º  
900-5616 Mount, BIH152 Gas Line  
7
8
9
900-5596 Mount, Valve Plate (used with Non-CE Gas Valves 810-0801/0802 only)  
809-0107 Screw, 8-32 x -inch Slotted Round Head  
900-8740 Mount, Valve Plate (used with CE Gas Valve 810-1715 only)  
813-0022 Nipple, ½-inch NPT Close  
813-0173 Union, ½-inch NPT  
813-0496 Nipple, ½-inch NPT x 9.5-inch  
813-0253 Nipple, ½-inch NPT x 10-inch  
813-0320 Nipple, ½-inch NPT x 8-inch  
900-5615 Support, BIH152 Gas Line  
810-0959 Manifold, MH152 1-piece Gas  
10  
11  
12  
13  
14  
15  
16  
17  
18  
*
813-0469 Cap, ½-inch NPT Pipe (closes off unused port in full vat configurations)  
813-0109 Nipple, ¾-inch NPT Close  
810-0478 Dormont Hose Assembly  
*
810-1425 Fitting, ½-inch Quick Disconnect x ½-inch Female NPT  
* Not illustrated.  
4-20  
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4.3.6 Gas Manifolds – BIH52/MH52 Multi-Fryer Units  
5
6
7
Typical Configuration for Systems  
using non-CE Gas Valves  
826-1122 or 826-1123  
4
1
15  
2
17  
18  
19  
20  
19  
21  
3
15  
8
6
16  
14  
14  
13  
12  
11  
22  
9
4
1
10  
12  
23  
8
4
9
6
24  
a
24  
OR  
6
4
1
25  
Typical Configuration for Systems  
using CE Gas Valve 810-1715  
2
17  
18  
3
19  
28  
27  
10  
14  
15  
15  
14  
11  
12  
22  
1
26  
4
29  
4
26  
34  
34  
35  
34  
35  
34  
36  
36  
33  
33  
Full Vat (left) and Dual Vat (right)  
Manufactured Gas Configurations  
(MH52 and BIH52)  
31  
31  
31  
31  
34  
31  
32  
31  
30  
30  
33  
39  
39  
37  
38  
20  
20  
1-piece Manifolds (used on MH52 units only)  
4-21  
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NOTE: The drawings on the preceding page illustrate typical gas manifold configurations. Specific  
configurations vary depending upon the number and types of fryers in a battery. The purpose of the  
drawings is to illustrate all individual components that may be found in any given configuration.  
Determination of which component to use in a particular application should be based upon careful  
inspection of the existing components, including taking measurements when appropriate.  
ITEM  
1
PART #  
COMPONENT  
813-0087 Nipple, ½-inch NPT x 1½-inch (3.8 cm)  
813-0003 Tee, ½-inch NPT  
2
3
813-0156 Plug, ½-inch NPT Pipe  
4
813-0173 Union, ½-inch NPT  
5
6
813-0497 Nipple, ½-inch NPT x 12½-inch (31.8 cm)  
813-0062 Elbow, ½-inch NPT x 90º  
7
8
813-0320 Nipple, ½-inch NPT x 8-inch (20.3 cm)  
813-0022 Nipple, ½-inch NPT x Close  
9
813-0460 Nipple, ½-inch NPT x 3-inch (7.6 cm)  
813-0031 Bushing, ¾-inch NPT to ½-inch Reducer  
823-2260 Bracket, ¾-inch NPT Gas Manifold Mounting  
813-0157 Plug, ¾-inch NPT Pipe  
813-0168 Elbow, ¾-inch NPT x 90º Street  
813-0110 Nipple, ¾-inch NPT x 1½-inch (3.8 cm)  
813-0066 Elbow, ¾-inch NPT x 90º  
813-0478 Nipple, ¾-inch NPT x 12½-inch (31.8 cm)  
813-0271 Tee, ¾-inch NPT x ½-inch Branch  
813-0386 Nipple, ¾-inch NPT x 12-inch (30.5 cm)  
813-0387 Tee, ¾-inch NPT  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
24a  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
813-0109 Nipple, ¾-inch NPT x Close  
813-0479 Nipple, ¾-inch NPT x 11-inch (27.9 cm)  
813-0068 Elbow, ¾-inch NPT x ½-inch NPT x 90º  
813-0281 Nipple, ½-inch NPT x 5-inch (12.7 cm)  
813-0515 Nipple, ½-inch NPT x 12-inch (30.5 cm)  
813-0360 Nipple, ½-inch x 14-inch (in CE BIH352-6 Natural Gas (G20/G25) units only)  
813-0253 Nipple, ½-inch NPT x 10-inch (25.4 cm)  
813-0265 Nipple, ½-inch NPT x 2½-inch (6.4 cm)  
813-0112 Nipple, ¾-inch NPT x 2-inch (5.1 cm)  
813-0476 Nipple, ¾-inch NPT x 14-inch (35.6 cm)  
813-0096 Nipple, ½-inch NPT x 6-inch (15.2 cm)  
900-0944 Plate, 1-inch NPT Gas Manifold Mounting  
813-0202 Elbow, 1-inch NPT x 90º  
813-0314 Tee, 1-inch NPT  
813-0318 Nipple, 1-inch NPT x 3-inch (7.6 cm)  
813-0138 Nipple, 1-inch NPT x Close  
813-0371 Nipple, 1-inch NPT x 2-inch (5.1 cm)  
809-0347 Nut, 1-inch NPT Retainer  
810-0661 Manifold, 1-piece H252 Gas  
810-0660 Manifold, 1-piece H352 Gas  
813-0469 Cap, ½-inch NPT Pipe (closes off unused port in full vat configurations)  
4-22  
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4.3.7 Gas Valves, Gas Lines and Fittings  
2
3
6
1
4
5
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
19  
18  
20  
21  
27  
27  
22  
23  
24  
25  
28  
26  
27  
29  
30  
30  
27  
4-23  
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ITEM  
PART #  
COMPONENT  
1
Gas Valve, Non-CE Kit  
Natural Gas (G20/G25)  
826-1122  
826-1123  
Propane (LP) Gas (G30/G31)  
2
810-0691 Vent Tube (used with Item 1)  
826-1576 CE Gas Valve Kit (includes items 3 and 4)  
3
4
810-1715  
810-1041  
Gas Valve, Universal CE (G20/G25/G30/G31)  
Accessory Kit (2 straight and 2 elbow flanges, screws, O-rings, LP gas  
spring)  
5
6
806-9678 Plug Assembly, CE Gas Valve (used with Item 3)  
807-1229 Gas Valve, Manufactured Gas  
7
810-1176 Tap, -inch NPT Pressure  
8
813-0411 Plug, -inch NPT Allen-head Pipe  
9
813-0304 Bushing, ½-inch to ¼-inch NPT Reducer  
810-1006 Bushing, ¼-inch to -inch NPT Reducer  
813-0004 Elbow, 90º x -inch NPT  
813-0354 Elbow, 90º x -inch NPT x -inch Tube (Brass)  
813-0302 Elbow, 90º x -inch Tube x ¼-inch Male NPT (Brass)  
813-0502 Elbow, 90º Street x ¼-inch (Brass)  
813-0340 Connector, -inch Tube to -inch Male NPT (Brass)  
810-0502 Connector, -inch Tube to -inch Male NPT (Brass) (with Item 6 only)  
810-1025 Connector, -inch Tube to ¼-inch Male NPT (Brass)  
813-0507 Coupling, ¼-inch NPT (Brass)  
813-0378 Cross Fitting, ½-inch Female NPT (Brass)  
810-1026 Tee, ¼-inch NPT Street (Brass)  
813-0495 Tee, ¼-inch Male NPT Branch (Brass)  
813-0377 Tee, -inch Female NPT (Brass)  
813-0016 Nipple, -inch NPT Close  
813-0315 Nipple, -inch NPT x 1½-inch (4.8 cm)  
813-0405 Nipple, -inch NPT x 2-inch (5.1 cm)  
10  
11  
12  
13  
14  
15  
*
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
*
813-0471 Nipple, ¼-inch NPT x 1½-inch (4.8 cm)  
900-3739 Gas Tube (Left), H52 FV Manufactured Gas (pre-formed)  
810-0503 Compression Nut (Ferrule), ½-inch Manufactured Gas Tube  
900-3737 Gas Tube (Right), H52 FV Manufactured Gas (pre-formed)  
900-3735 Gas Tube (Left and Right), H52 DV Manufactured Gas (pre-formed)  
Flexible Stainless Steel Gasline (Flexline), -inch OD  
29  
810-1353  
810-1354  
810-1355  
9-inch (22.9 cm) Kit 826-1530 includes 2 of #30  
12-inch (30.5 cm) Kit 826-1531 includes 2 of #30  
15-inch (38.1 cm) Kit 826-1532 includes 2 of #30  
30  
*
810-0494 Compression Nut (Ferrule), -inch Flexible Gas Line  
Enrichment Tube  
811-0752  
811-0756  
811-0800  
812-0742  
5½-inch (14 cm)  
8½-inch (21.6 cm)  
12½-inch (31.8 cm)  
18-inch (45.7 cm)  
Brass Comp. Fitting 810-0502 for ignitor end  
Brass Comp. Fitting 810-0340 for gas valve end  
* Not illustrated.  
4-24  
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4.4  
Electronics  
4.4.1 Computers, Controllers and Associated Components  
Discontinued M100B  
Computer. Replaced  
by M2000 computer.  
1
JC  
2
1
1
2
2
3
4
1
2
3
4
5
6
7
8
9
0
ABC  
DEF  
GHI  
JKL  
MNO  
PQR  
STU  
VWX  
YZ-  
-
*
6
5
7
8
4-25  
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ITEM  
PART #  
COMPONENT  
Computer, McDonald’s M100B has been replaced by M2000  
U.S.,Canada and Non-CE Export with  
6-second Melt Cycle - Replacement Upgrade Kit  
Non-CE Export with 8-second Melt Cycle (M100B Obsolete)  
Factory-programmed in French (M100B Obsolete)  
CE Export - Replacement Upgrade Kit  
Computer, McDonald’s M2000 Gas Fryer  
U.S. and Canada FV / Non-CE Export  
CE Export FV  
Controller, McDonald’s Full Vat Gas Fryer Solid-State  
With 6-second Melt Cycle  
With 8-second Melt Cycle  
Controller, McDonald’s Dual Vat Gas Fryer Solid-State  
With 6-second Melt Cycle  
1
826-1739  
806-8041E  
806-8040  
826-1810  
2
3
4
106-0529B  
106-2436B  
806-3007  
806-3571  
806-3009  
806-3572  
With 8-second Melt Cycle  
5
6
7
8
*
*
*
*
*
810-0387 Knob, Replacement Control (for use on Solid-State Controllers)  
806-2071 Cable, Computer/Controller to Interface Board  
826-1177 Thermostat, High-Limit Kit  
806-4206 Probe Assembly, Temperature  
826-1739 Retrofit Kit, Solid-State Controller to M100B Computer  
826-1675 M100B to M2000 Speaker and Mount Retrofit Kit  
806-3660 Sound Device, High Output for M100B  
807-1617 M2000 Speaker  
826-1032SP Screw and Retainer Kit for computer  
* Not illustrated.  
4-26  
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4.4.2 Component Boxes  
IFB 106-0386 (Item 7) has two  
fuses (807-3843) and may be  
used with any of the ignition  
modules.  
6
7
7
3
13  
5
11  
8
Full vat units using one 807-3366 module  
(Item 3) require only one latch relay (Item 5).  
Full or dual vat units using two 807-1006,  
807-2971, or 807-3365 modules require a  
latch relay (Item 5) for each module.  
14  
16  
6
2
5
17  
9
4
1
10  
12  
2
15  
5
4
ITEM  
PART #  
200-5996  
807-1006  
807-2971  
807-3366  
807-3365  
807-0833  
807-3843  
106-0386  
COMPONENT  
Box Assembly, One-Piece Component  
Ignition Module, Full or Dual Vat (fuse-protected)  
Ignition Module, Full or Dual Vat (fuse-protected) (Australian units only)  
Ignition Module, Full Vat (unfused – use inline fuse 106-0531SP)  
Ignition Module, Dual Vat (unfused – use inline fuse 106-0531SP)  
Relay, 12V 5Amp Latch  
Fuse, 3A 250V Subminature  
Interface Board (double fuse-protected) (use with 807-3365,807-1006 or 807-  
3366)  
1
2
*
3
4
5
6
7
*
8
9
806-4973  
807-1926  
816-0217  
810-1164  
826-1359  
826-1366  
807-1241  
809-0250  
826-1337  
826-1346  
809-0441  
810-2243  
806-3660  
807-1359  
Interface Board (used with 240V manufactured gas units only)  
Bushing, .875 Diameter Split  
Paper, Insulating (Items 9, 10, 11, 12 not used on BIH152 or Hong Kong units)  
Block, Terminal (See Item 9)  
Screw, 4-40 x ¾-inch Slotted Round Head (See Item 9) (Pkg. of 25)  
Nut, 4-40 Keps Hex (See Item 9) (Pkg. of 25)  
Spacer, Interface Board (.151-inch ID x -inch)  
Nut, 6-32 Keps Hex  
10  
11  
12  
13  
14  
15  
16  
17  
*
Tab, Push-On Terminal (Pkg. of 5)  
Spacer, Ignition Module (.260-inch ID x ½-inch) (Pkg. of 10)  
Screw, #7 x 1½-inch Slotted Washer Hex Head  
Spring, Relay Clip Hold Down  
Sound Device, High Output (Use 807-3520 with M2000 Computers)  
Mount, Tie-Wrap (used on CE units only)  
*
*
* Not illustrated.  
4-27  
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4.4.3 Filter Box Components  
120V FILTER BOX  
100/120V DUAL-VOLTAGE  
FILTER BOX  
MULTI-VOLTAGE (CE)  
FILTER BOX  
6
7
8
11  
12  
13  
14  
11  
12  
13 14  
6
7
9
6
7
10  
11  
12  
13  
14  
3
5
3
4
3
4
3
3
3
16  
16  
1
1
1
2
2
2
16  
15  
3
ITEM  
1
PART #  
900-5250 Box, Filter  
807-0156 Connector, 9-Pin Female  
COMPONENT  
2
*
807-2518 Plug, Mate-N-Lock Keying (used w/Item 2)  
3
4
5
6
809-0360 Screw, #8 x -inch Hex Washer Slot Head  
807-0012 Relay, Non-CE 18 Amp 13-HP 24V Coil 4 Pole  
807-2434 Relay, CE 18 Amp 13-HP 24V Coil 5 Pole  
809-0096 Screw, 6-32 x -inch Slot Head  
7
809-0250 Nut, 6-32 Keps Hex  
8
807-0800 Transformer, 120/24VAC 50/60Hz 50VA  
9
807-2176 Transformer, Dual Voltage (100 or 120/24/12VAC) 50/60Hz 50VA  
10  
11  
12  
13  
14  
15  
16  
*
807-1999 Transformer, Multi-Voltage (208, 220, 230, 240/24VAC) 50/60Hz 50VA  
816-0217 Paper, Insulating  
810-1164 Block, Terminal  
826-1359 Screw, 4-40 x ¾-inch Round Slot Head (Pkg. of 25)  
826-1366 Nut, 4-40 Keps Hex (Pkg. of 25)  
900-5530 Cover, Filter Box  
810-0044 Plug, .875 Button  
806-8021SP Upper Plug Heater Plug  
*
806-7494SP Lower Plug Heater Plug  
* Not illustrated.  
NOTE: See Page 4-31 for associated wiring assemblies.  
4-28  
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4.4.4 Transformer Box Components  
3
BIH152  
4
2
8
24  
6
1
7
5
23  
11  
9
10  
12  
14  
15  
12  
16  
13  
17  
18  
19  
MH152  
13  
27  
21  
MH152 (CE)  
20  
22  
13  
25  
BIH252/MH252  
Assy. PN 806-8338SP  
26  
30  
9
10  
11  
14  
15  
16  
17  
18  
19  
28  
12  
13  
25  
13  
10  
30  
20  
21  
22  
11  
9
31  
14  
15  
16  
33  
12  
13  
BIH252/MH252 (CE)  
17  
18  
19  
13  
12  
32  
13  
25  
BIH352/MH352  
20  
21  
22  
34  
35  
9
10  
11  
36  
15  
16  
13  
12  
BIH352/MH352 (CE)  
39  
37  
18  
19  
38  
13  
12  
25  
40  
13  
20  
21  
22  
BIH452/MH452  
13  
12  
41  
BIH452/MH452 (CE)  
4-29  
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ITEM  
PART #  
COMPONENT  
Transformer (for use in BIH152 units)  
1
807-1238  
807-0800  
807-0855  
807-0012  
807-0273  
807-1612  
807-0255  
810-0045  
809-0362  
900-5560  
807-1683  
826-1363  
809-0050  
100/24VAC 50 Hz  
120/24VAC 50/60 Hz  
Transformer, 120/12VAC 50/60 Hz (for use in BIH152 units)  
Relay, 18 Amp 24VDC Coil  
Block, 16-Pin Terminal  
Clamp, -inch Strain Relief  
Jumper, Double  
Bushing, .875-inch Diameter  
Screw, 8-32 x 1-inch Hex Slotted Washer Head (for mounting Items 1-4)  
Shield, BIH152 Transformer  
2
3
4
5
6
7
*
8
9
Relay, 15 AMP 12VDC Coil  
Screw, 8-32 x ½-inch Slotted Truss Head (Pkg. of 25)  
Nut, 8-32 Hex  
10  
11  
12  
Transformer (for use in MH152 and BIH252/352/452/552 units)  
100-120/24/12VAC (used in U.S., Japanese, and Korean units) Dual Voltage  
208-240/24/12VAC (used in CE and most export units) Dual Voltage  
Screw, 8-32 x -inch Slotted Hex Washer Head  
Block, 4-Post Threaded Terminal (used in Non-CE units)  
Screw, ¼-20 x ¾-inch Hex Head (Pkg. of 10)  
Nut, ¼-20 Hex (Pkg. of 10)  
Nut, 10-24 Hex (for use on Item 14 and Item 36 terminal posts)  
Block, 3-Position Push-In Terminal (used in CE units)  
Screw, 4-40 x ¾-inch Slotted Round Head (Pkg. of 25)  
Nut, 4-40 Keps Hex (Pkg. of 10)  
Terminal, Lug  
Screw, 8-32 x ½-inch Slotted Truss Head (Pkg. of 25)  
Nut, 8-32 Keps Hex  
Box, MH152 Transformer  
Cover, MH152 Transformer Box Top  
807-2176  
807-1999  
809-0360  
807-1973  
826-1389  
826-1362  
809-0052  
810-1163  
826-1359  
826-1366  
807-0070  
826-1363  
809-0247  
900-2697  
900-2708  
900-2703  
900-2709  
826-1374  
900-5924  
900-5927  
900-5928  
900-5923  
900-5925  
900-5929  
900-5928  
900-5930  
807-2608  
810-1162  
900-5926  
900-5931  
900-5932  
900-5930  
807-0156  
13  
14  
15  
16  
*
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
*
Cover, MH152 Transformer Box Left  
Cover, MH152 Transformer Box Right  
Screw, #10 x ½-inch Self-Tapping Slotted Hex Washer Head (Pkg of 25)  
Box, BIH252/MH252 Transformer  
Cover, BIH252/MH252 Transformer Box Top  
Cover, BIH252/MH252 Transformer Box Left  
Cover, BIH252/MH252 Transformer Box Right  
Box, BIH352/MH352 Transformer Box  
Cover, BIH352/MH352 Transformer Box Top  
Cover, BIH352/MH352 Transformer Box Left  
Cover, BIH352/MH352 Transformer Box Right  
Block, 8-Post Threaded Terminal (used in Non-CE units)  
Block, 4-Position Push-In Terminal (used in CE units)  
Box, BIH452/MH452 Transformer  
Cover, BIH452/MH452 Transformer Box Top  
Cover, BIH452/MH452 Transformer Box Left  
Cover, BIH452/MH452 Transformer Box Right  
Connector, 9-Pin Plug  
* Not illustrated.  
4-30  
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4.4.5 Wiring  
Filter Box Wiring  
2
1
3
4
5
6
ITEM  
PART #  
COMPONENT  
1
2
3
4
5
6
*
*
*
*
806-8021SP 120V U.S. and 100/120V Non-CE Export Upper 9-Pin Plug Assembly  
806-7494SP 120V U.S. Lower 9-Pin Plug Assembly  
806-6725SP 230V CE Upper 9-Pin Plug Assembly  
806-6719SP 100/120V Non-CE Export and 230V CE Lower 9-Pin Plug Assembly  
810-1062  
807-2001  
Cable, Filter Box Lower 9-Pin Plug to 807-2001 15-Pin (C2) Connector  
Cable, 810-1062 C2 Connector to Filter Terminal Block  
806-6728SP Pump Motor to Filter Box Wiring Assembly  
810-0366 Strain Relief 9-pin  
WIR0287SP 120V U.S. Filter Box Internal Wiring  
WIR0233SP 100-250V CE and Non-CE Export Filter Box Internal Wiring  
* Not illustrated.  
1
2
3
Gas Valve Wiring  
ITEM  
PART #  
COMPONENT  
1
2
3
806-3941SP Harness, Full Vat Gas Valve  
806-3940SP Harness, Dual Vat Gas Valve  
806-9678SP Plug Assembly, CE Gas Valve  
4-31  
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Main Wiring Harnesses  
U.S. and Non-CE harness (shown)  
has two unterminated wires.  
Unterminated wires.  
CE harness has two unterminated  
wires plus two additional wires with  
push-on terminals.  
ITEM  
PART #  
COMPONENT  
807-1978 U.S. and Non-CE Export MH/BIH52 Main Wiring Harness  
807-2168 CE MH/BIH52 Main Wiring Harness  
Power Cords  
1
2
3
4
5
6
ITEM  
PART #  
COMPONENT  
1
2
3
806-9786 3-Wire without Plug, 450V (Non-CE Export)  
806-5332SP 3-Wire with 3-Prong Molded Plug, (U.S., CE, and Non-CE Export)  
806-6083 5-Wire with 4-Prong Twist-Lock Plug, 120V (U.S. and Non-CE Export)  
807-1558 5-Wire, 4 pole plug 20A only  
4
5
6
*
807-1871 3-Wire with 3-Prong Twist-Lock Plug, 125V (Mexico and South America)  
806-9285 3-Wire with 3-Prong Twist-Lock Plug, 250V (Far East and Pacific Rim)  
807-1696 3-Wire with 3-Pin Sleeved Plug, 230V (CE)  
807-1560 Strain Relief  
* Not illustrated.  
4-32  
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2
Transformer Box Wiring  
1
806-8706 BIH252/MH252  
Left Position (U.S. and Non-CE Export)  
(Typical)  
ITEM  
PART #  
COMPONENT  
1
Plug and Wire Assembly, Transformer Box 9-Pin Female  
806-6077  
MH152 (U.S. and Non-CE Export)  
806-6597  
MH152 (CE)  
806-8706SP  
806-8707SP  
806-8719  
BIH252/MH252, Left Position (U.S. and Non-CE Export)  
BIH252/MH252, Right Position (U.S. and Non-CE Export)  
BIH252/MH252, Right Position (CE)  
806-8720  
BIH252/MH252, Left Position (CE)  
806-8708SP1  
806-8709SP2  
806-8710SP3  
806-8718 4  
806-8721 5  
806-8722 6  
806-8723SP  
BIH352/MH352, Left Front Position (U.S. and Non-CE Export)  
BIH352/MH352, Left Rear Position (U.S. and Non-CE Export)  
BIH352/MH352, Right Position (U.S. and Non-CE Export)  
BIH352/MH352, Right Position (CE)  
BIH352/MH352, Left Front Position (CE)  
BIH352/MH352, Left Rear Position (CE)  
BIH452/MH452, Right Front Position (CE)  
Internal Wiring Bundles  
2
*
*
*
*
*
*
*
*
*
807-0156  
WIR0288  
9-pin connector  
100-240V BIH152 (U.S., CE, and Non-CE Export)  
100-240V MH152 (U.S. and Non-CE Export)  
100-240V BIH252/MH252 (U.S. and Non-CE Export)  
100-240V BIH352/MH352 (U.S. and Non-CE Export)  
100-240V BIH452/MH452 (U.S. and Non-CE Export)  
230V MH152 (CE)  
230V BIH252/MH252 (CE)  
230V BIH352/MH352 (CE)  
230V BIH452/MH452 (CE)  
WIR0109  
WIR0100SP 7  
WIR0101SP 8  
WIR0102SP  
WIR0144  
WIR0141 9  
WIR0142 10  
WIR0143  
* Not illustrated.  
NOTES:  
1. Also used in Left Front Position of BIH452/MH452 (U.S. and Non-CE Export)  
2. Also used in Left Rear Position of BIH452/MH452 (U.S. and Non-CE Export)  
3. Also used in Right Rear Position of BIH452/MH452 (U.S. and Non-CE Export)  
4. Also used in Right Rear Position of BIH452/MH452 (CE)  
5. Also used in Left Front Position of BIH452/MH452 (CE)  
6. Also used in Left Rear Position of BIH452/MH452 (CE)  
7. Also used in BIH552 (U.S. and Non-CE Export)  
8. Also used in BIH552 (U.S. and Non-CE Export)  
9. Also used in BIH552 (CE)  
10. Also used in BIH552 (CE)  
4-33  
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4.5  
Oil Handling System Components  
4.5.1  
Drain System Components  
4.5.1.1  
Square Drain Sections and Seal Components  
2
1
3
4
Dual Vat Components  
5
7
8
6
9
10  
12  
11  
Full Vat Components  
13  
14  
15  
16  
17  
ITEM  
1
PART #  
COMPONENT  
KIT-0257SP Clamp Assembly and Seal Kit  
816-0420 Seal (Rubber Boot)  
806-6374SP Clamp Assembly  
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
*
823-2199  
823-2212  
823-2204  
823-2192  
823-2202  
823-2211  
823-2210  
823-2212  
823-2194  
823-2200  
823-2207  
823-2233  
823-2197  
823-2198  
811-0932  
813-0408  
816-0123  
810-1372  
Dual Vat Left End Outer Section (4.12-inches/10.5 cm)  
Dual Vat Left End Inner Section (3.57-inches/9.1 cm)  
Dual Vat Outlet Section with 1 Bracket (11.55-inches/29.3 cm)  
Dual Vat Outlet Section with 2 Brackets (11.55-inches/29.3 cm)  
Dual Vat Drain Section with 2 Brackets (11.55-inches/29.3 cm)  
Dual Vat Closed Outlet Section with 1 Bracket (15.86-inches/40.3 cm)  
Dual Vat Closed Outlet Section with 2 Brackets (15.86-inches/40.3 cm)  
Dual Vat Right End Inner Section (3.57-inches/9.1 cm)  
Dual Vat Right End Outer Section (4.12-inches/10.5 cm)  
Full Vat Outlet Section with 2 Brackets (23.38-inches/59.4 cm)  
Full Vat Outlet Section with 3 Brackets (23.38-inches/59.4 cm)  
Full Vat Drain Section with 1 Bracket (15.39-inches/39.1 cm)  
Full Vat Left End Section (7.95-inches/20.2 cm)  
Full Vat Right End Section (7.95-inches/20.2 cm)  
Vent Tube, Teflon 3/8” OD Bulk  
¼ Pipe Plug, Used when vent tube is not used.  
*
*
*
Cap-Square Drain (KIT0256 End Cap Kit)  
Elbow, 90º Vent Tube (used with Items 4 and 16)  
* Not illustrated.  
NOTE: Item 5 is always used left of outlet section; Item 11 is always used right of outlet section.  
4-34  
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4.5.1.2  
Drain Valve Assemblies and Associated Components  
4-35  
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ITEM  
PART #  
810-1569  
806-7916  
806-7915  
810-1018  
806-6373SP  
810-1114  
806-6608SP  
806-6609SP  
806-6400SP  
806-6401SP  
810-1338  
807-2103  
807-2104  
816-0135  
806-8137  
806-8194  
106-2671  
806-8195  
106-2672  
900-2841  
901-2348  
902-2348  
900-2354  
900-2355  
816-0220  
826-1366  
809-0539  
809-0540  
900-2609  
210-8967  
823-2371  
810-0677  
900-2521  
210-9179  
814-0047  
810-1568  
810-1567  
201-3916  
823-3901  
200-4304  
823-3902  
900-2509  
210-9922  
901-5713  
900-2503  
902-5713  
210-9925  
826-1382  
900-2936  
900-2934  
810-1165  
809-0196  
826-1896  
826-1897  
COMPONENT  
Valve, Full Vat 1.25-inch Drain (for use on MH52 units. See NOTE.)  
Valve, 1-inch Drain w/ lock Right  
Valve, 1-inch Drain w/ lock Left  
Valve, Full Vat 1.25-inch Drain (for use on BIH52 units)  
Valve Assembly 1.25-inch Drain  
Valve, Dual Vat 1-inch Drain (for use on BIH52 units)  
Valve, Drain Assembly Right DV 1.25-inch  
Valve, Drain Assembly Left DV 1.25-inch  
Valve, Drain Assembly Left DV 1-inch  
Valve, Drain Assembly Right DV 1-inch  
Valve, Dual Vat 1-inch Drain (for use on MH52 units)  
Switch, Drain Safety (for use on Full Vat BIH52 units)  
Switch, Drain Safety (for use on Dual Vat BIH52 units)  
O-Ring (for use with Items 2 and 3)  
Bracket, Full Vat Drain Safety Switch  
Bracket, Left Dual Vat Drain Safety Switch  
Bracket, Left Dual Vat Drain Safety Switch  
Bracket, Right Dual Vat Drain Safety Switch  
Bracket, Right Dual Vat Drain Safety Switch  
Cover, Full Vat Drain Safety Switch  
Cover, Left Dual Vat Drain Safety Switch  
Cover, Right Dual Vat Drain Safety Switch  
Bracket, Full Vat Drain Valve  
Bracket, Dual Vat Drain Valve  
Insulation, Drain Safety Switch  
Nut, 4-40 Keps Hex (Pkg. of 25)  
Nut, -inch 2-Way Lock  
Nut, ½-inch 2-Way Lock  
Handle, FV Drain  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14a  
14b  
15  
16  
17  
18  
19  
Handle, FV Drain SS  
Handle, Non-CE Full Vat  
Grip, Handle Round  
Handle, CE Full Vat BIH52 Drain Valve  
Handle, Full Vat BIH52 Drain Valve  
20  
21a  
21b  
22  
23  
24  
Sleeve, Handle Flat  
Handle with Lock, Drain Valve (for Full or Left Dual Vat MH52 Valve)  
Handle with Lock, Drain Valve (for Right Dual Vat MH52 Valve)  
Handle, Non-CE Dual Vat BIH52 Left Drain Valve  
Handle, Non-CE Dual Vat BIH52 Left Drain Valve non-McD’s  
Handle, Non-CE Dual Vat BIH52 Right Drain Valve  
Handle, Non-CE Dual Vat BIH52 Right Drain Valve non-McD’s  
Handle, CE Dual Vat BIH52 Left Drain Valve  
Handle, Dual Vat BIH52 Left Drain Valve  
Handle, CE Dual Vat BIH152 Left Drain Valve  
Handle, CE Dual Vat BIH52 Right Drain Valve  
Handle, CE Dual Vat BIH152 Right Drain Valve  
Handle, Dual Vat BIH52 Right Drain Valve  
Wingnut (Pkg. of 10)  
Retainer, Drain Valve ½-inch Nut FV  
Retainer, Drain Valve -inch Nut DV  
Washer, Teflon DV  
Washer, Felt DV  
Bracket Kit for Dual Vat Drain Valves Left  
Bracket Kit for Dual Vat Drain Valves Right  
25  
26  
27a  
27b  
28  
29  
30a  
30b  
31  
32  
33  
34  
*
*
*
* Not Illustrated  
NOTE: Item 1 includes Handle, 810-1568 (Item 23).  
4-36  
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4.5.2  
Filtration System Components  
4.5.2.1 Filter Base Assemblies  
NOTE: These types of base sides are no longer available.  
They must be replaced with Items 13 and 14. Handles and  
screws used with these base sides remain available.  
1
2
7
6
9
5
10  
8
12  
11  
3
NOTE: These types of base sides are no  
longer available. They must be replaced with  
Items 13 and 14.  
4
Base Assembly 106-0043SP  
(Replaces Base Assembly 806-5985 used  
on units built prior to August 1997)  
NOTE: Items 1, 2, 3, and 4 are shown  
assembled to base assemblies for  
illustrative purposes. However, Base  
Assemblies 106-0043SP, 806-8804,  
and 806-8848SP do not include Items  
1, 2, 3, and 4. These items must be  
ordered separately.  
18  
Lock bracket used on units  
built before August 1997.  
Items 8 and 9 are used on all three  
base assemblies.  
14  
15  
16  
17  
13  
Base Assembly 806-8648SP  
(Used on units built August 1997 and later.)  
Base Assembly 806-8804  
(Used on Japanese/Far East Units)  
4-37  
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NOTE: In September 1999, significant changes were made to the design of the filter base  
assemblies used in BIH52 fryers. The most visible change was the removal of the casters on all  
assemblies except 806-8804 (which is used in units manufactured for sale primarily in Japan). The  
motor cover was also redesigned and a lower plumbing shield was added. Additionally, the two-  
piece motor support (P/Ns 900-7469 and 900-7470) was replaced with a single, stronger support.  
In order to provide continued support for units built prior to August 1999, a new filter base assembly  
with casters (P/N 106-0043SP) was created to replace the original 806-5895 filter base assembly,  
which is no longer available.  
Two additional modifications to the design of the base sides have been made since August 1999.  
These include the replacement of the die-cast metal handles with handles formed into the sides, and  
the replacement of the separate lock brackets with brackets that are also formed into the sides.  
ITEM  
1
PART #  
COMPONENT  
900-5477 Cover, Motor (September 1999 and later) (used with all three assemblies)  
824-0558 Cover, Motor (Prior to September 1999)  
*
2
3
4
5
900-1949 Standoff, Filter Wiring Box (used with all three assemblies)  
900-7557 Cover, Suction Tube (used with all three assemblies)  
900-9634 Shield, Filter Plumbing (used with all three assemblies)  
810-0949 Caster, 2.5-inch Swivel (also used in original 806-5985 assembly)  
806-9153 Side, Left Filter Base (used in 106-0043SP)  
6
7
806-9150 Side, Right Filter Base (used in 106-0043SP)  
8
9
823-2289 Support, Filter Pan (used in all three filter base assemblies)  
900-5396 Support, Filter Motor (used in all three filter base assemblies)  
826-1374 Screw, #10 x ½-inch Washer Hex Head (Pkg of 25)  
810-0180 Handle, Plated Die-cast Metal  
826-1360 Screw, 10-24 x 5/16-inch Round Slotted Head (Pkg of 25)  
201-3770 Side, Left Filter Base (used in 806-8648SP)  
202-3770 Side, Right Filter Base (used in 806-8648SP)  
806-9154 Side, Left Filter Base (used in 806-8804SP)  
806-9151 Side, Right Filter Base (used in 806-8804SP)  
810-1211 Caster, BIH52 Rigid (used in 806-8804SP only)  
900-1953 Bracket, Filter Lock (used on base assemblies prior to September 1999)  
809-0440 Nut, 5/16-inch Keps Hex (used for securing casters to base assemblies)  
826-1677 Pin Extension Kit  
10  
11  
12  
13  
14  
15  
16  
17  
18  
*
*
* Not illustrated.  
4-38  
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4.5.2.2 Filter Motor and Pump Plumbing  
4-39  
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ITEM  
PART #  
826-1264  
COMPONENT  
Pump, 4 GPM (15 LPM) (comes with Gasket 816-0093)  
Motor and Gasket Kit, Multi-Voltage  
1
2
826-1712  
826-1713  
807-2484  
810-1404  
810-1373  
100-120VAC (replaces earlier kits 826-1260, -1263, and -1268)  
200-250VAC (replaces earlier kits 826-1262, -1266, -1269, and -1270)  
Valve, Solenoid Vent  
Flexline, Oil Return (pump to rear manifold)  
Flexline, Pump Bypass  
3
4
5
6
806-9437SP Flexline, 15½-inch (39.5cm) Oil Return (See NOTE below)  
7
8
9
10  
11  
12  
13  
14  
15  
16  
813-0165  
813-0530  
813-0537  
813-0543  
813-0265  
813-0460  
813-0304  
813-0331  
810-1159  
Elbow, ½-inch x 90º Street  
Tee, ½-inch x ¼-inch x ½-inch Reducing  
Nipple, ¼-inch x 2-inch  
Elbow, ¼-inch x 90º Street  
Nipple, ½-inch x 2½-inch  
Nipple, ½-inch x 3-inch  
Bushing, ½-inch to ¼-inch Reducing  
Elbow, ½-inch 3-way  
Flexline, 5-inch Oil Return  
Hose, Heated Oil Return  
100-120VAC  
208-250VAC  
Support, Oil Return  
Valve, 180º 3-way Ball  
Nipple, ½-inch x Close  
Elbow, ½-inch x 90º  
Nipple, ½-inch x 6½-inch  
Nipple, ½-inch x 1½-inch  
Mount, Motor  
Screw, ¼-20 x ¾-inch Hex Head (Pkg. of 10)  
Washer, ¼-inch Lock  
Nut, ¼-20 Hex (Pkg. of 10)  
Capscrew 5/16”x 18 NC  
Washer, Flat 5/16 ZP  
810-0945  
810-1037  
900-1958  
810-1003  
813-0022  
813-0062  
813-0098  
813-0087  
900-5543  
826-1389  
809-0191  
826-1362  
809-0514  
809-0194  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
*
806-6728SP Wiring Assembly, Pump Motor to Filter Box  
*
816-0093  
Gasket, Pump Motor  
*
Thermal Switch  
807-1600  
807-1601  
807-1598  
807-1599  
807-1420  
807-1472  
807-2304  
811-0746  
811-0861  
Baldor Motor, 120VAC  
Baldor Motor, 240VAC  
Magnatek Motor, 120VAC  
Magnatek Motor, 240VAC  
*
*
*
*
*
Heater Tape 120V 25w 36” (Assy. 806-9245SP)  
Heater Tape 120V 40w 56” (Assy. 806-8004SP)  
Heater Tape 120V 100w 72” (Assy, 806-7755SP)  
Aluminum Tape – 50 yard roll  
Foam Insulation – by the foot  
* Not illustrated.  
NOTE: Item 6 consists of 13-inch Flexline 810-1057 and two -inch to ½-inch Male Adapters 810-1668,  
which may be ordered as separate items.  
4-40  
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4.5.2.3 Filter Pan Assemblies and Associated Components  
3
5
4
7
6
1
2
10  
11  
12  
10  
25  
13  
14  
15  
16  
8
9
18  
17  
19  
20  
21  
22  
23  
24  
4-41  
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ITEM  
PART #  
COMPONENT  
Pan Assembly, Filter (has screen alignment pins in pan bottom)  
Standard  
1
806-6423SP  
806-7377SP  
For use on Japanese/Far East (JBIH52) units.  
2†  
3
806-5618SP Pan Assembly, Filter (has no screen alignment pins in pan bottom) (Paper  
pans used in Japan)  
Cover, Filter Pan  
823-2027  
823-2321  
For use with 806-6423SP and 806-5618SP assemblies.  
For use with 806-7377SP units (has lower splash guard than 823-2027)  
4
5
6
7
8
810-1405 Ring, Hold Down (for use with 806-6423SP and 806-7377SP assemblies)  
810-1408 Ring, Hold Down (for use with 806-5618SP assembly)  
900-8818 Screen, Sana Grid (9 x 17-inch/23 x 43cm, has alignment holes)  
900-8819 Screen, Sana Grid (12 x 19.5-inch/30.5 x 49.5cm, has no holes)  
823-2234SP Pan, Filter (has screen alignment pins in pan bottom)  
823-1979SP Pan, Filter (has no screen alignment pins in pan bottom)  
809-0422 Screw, 10-32 x 7/16-inch Slotted Truss Head  
9†  
10  
826-1490 Kit, Filter Pan Check Valve Service (consists of Items 11 through 16)  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
*
810-1387  
900-5448  
810-0946  
810-0948  
810-1388  
816-0597  
Retainer, Check Valve  
Strainer, Check Valve  
Spring, Check Valve  
Ball, Check Valve  
Tube, Check Valve  
O-Ring, Check Valve  
824-0430 Screen, Crumb (used with 806-5618SP, 806-6423SP, and 806-7377SP)  
823-2586 Cover, Filter Pan (for use with 823-2575SP)  
823-2574 Ring, Hold Down (for use in 823-2575SP)  
900-8829 Screen, San Grid (10 x 9-inch/23 x 25cm, for use in 823-2575SP) Baby FP  
823-2575SP Pan, Filter (for use in BIH152 units)  
823-2578 Bracket, BIH152 Oil Return  
810-0697 Disconnect, Male  
826-1392 O-Ring, BIH152 Oil Return (Pkg of 5)  
809-0028 Nut, Wld 10-32 Sngl Wng  
806-8550SP Inner Pan w/ ck valve and O-rings  
† Used on some early-production Japanese/Far East (JBIH52) units only.  
* Not illustrated.  
4-42  
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4.5.2.4 Rear Flush Oil Return Components  
6
7
8
5
1
9
4
2
3
Nut (furnished  
with Item 8)  
10  
11  
Right Oil Return Valve Assembly  
(All components except for Items 4 and 5  
are the same for Left Oil Return Valve  
Assembly)  
12  
13  
TYPICAL CONFIGURATION  
(BIH252 Full Vat Left /Dual Vat Right shown)  
14  
15  
16  
21  
17  
4
Right Handle and Switch Assembly  
(All components except for Items 4 and 14  
are the same for Left Handle and Switch  
Assembly)  
20  
18  
18  
See Page 4-35 for Square  
Drain components  
19  
4-43  
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ITEM  
PART #  
COMPONENT  
1
2
*
3
4
807-2484 Valve, Solenoid Vent (145 ohms)  
810-1372 Elbow, 90º x ¼-inch NPT x -inch Tube  
811-0932 Vent Tube 3/8” OD Bulk Teflon  
809-0601 Clip, Rod End Clevis  
Shaft, Rear Flush Valve  
810-1767  
810-1766  
For use in left oil return valve assemblies (see illustration below). FV  
For use in right oil return valve assemblies (see illustration below).  
Handle, Rear Flush Valve  
5
901-2772  
902-2772  
For use in left oil return valve assemblies. FV use left only  
For use in right oil return valve assemblies.  
*
6
900-2935 Nut, Oil Return Valve Retainer  
813-0165 Elbow, 90º x ½-inch Street  
7
813-0022 Nipple, ½-inch Close  
8
810-0278 Valve, ½-inch Ball  
9
806-9828SP Flexline Assembly, 9-inch Oil Return  
813-0469 Cap, ½-inch Pipe  
810-1360 Manifold, BIH252 Rear Flush Oil Return  
810-1357 Manifold, BIH352 Rear Flush Oil Return  
810-1378 Manifold, BIH452 Rear Flush Oil Return  
Cover, BIH52 Rear Flush Oil Return Microswitch  
10  
11  
12  
13  
14  
901-2214  
902-2214  
For use in left handle and switch assemblies.  
For use in right handle and switch assemblies.  
15  
16  
17  
18  
19  
20  
826-1366 Nut, 4-40 Keps Hex (Pkg. of 25)  
807-2103 Microswitch  
810-1186 Cam, Filter System Microswitch  
826-1377 Setscrew, 10-32 x ¼-inch (Pkg. of 25)  
816-0220 Insulation, Microswitch  
Handle, Rear Flush  
823-2295  
823-2259  
For use in Non-CE applications (see illustration below).  
For use in CE applications only (see illustration below).  
21  
812-1253SP Cover, Rear Flush Handle  
NOTE: Left and right refer to the fryer as viewed from the front when facing the fryer.  
Shaft 810-1767  
(Note orientation of flat  
and 45° angle to left.)  
Shaft 810-1766  
(Note orientation of flat  
and 45° angle to right.)  
Full Vat or  
Left Side of Dual Vat  
Right Side of Dual Vat  
Handle 823-2295  
(Note orientation of slot)  
This handle is used in  
non-CE applications.  
Handle 823-2259  
(Note orientation of slot)  
This handle is used in  
CE applications.  
NOTE: Handles are shown in  
Valve OPEN/Filter ON position.  
4-44  
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