Frymaster BIH52, MH52 CHAPTER 1: INTRODUCTION

1-1

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 box es 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.

Contents

Main SERVICE MANUAL FRYMASTER MH52 AND BIH52 SERIES GAS FRYERS *8195423* Page Page WARRANTY STATEMENT Page Page Page CHAPTER 1: INTRODUCTION Page CHAPTER 2: INSTALLATION INSTRUCTIONS Page Page Page 2-5 Required airflow for the combustion air supply is 2m3/h per kW. Page Page CHAPTER 3: SERVICE PROCEDURES, TROUBLESHOOTING AND WIRING DIAGRAMS Page Page 3-4 CURRENT FLOW THROUGH INTERFACE BOARDS 806-3398 AND 106-0386 (H52 APPLICATION) J3 LEFT VAT FULL OR RIGHT VAT J2 Page Honeywell 3-7 CE Standard Burner Manifold Gas Pressures for Fryers Manufactured Through April 1999 Non-CE Standard Burner Manifold Gas Pressures Page Page Page Page Page Page Page Page Page Page Disassembling A Frypot Spacer 3-18 (Full Vat Illustrated) Spacers Re-assembling A Frypot 3-19 (Full Vat Illustrated) here Apply cement Page Page Page Page Page Page Page Page Page Page 3-30 3.8.1 Troubleshooting the 24VAC Circuit 3-31 FULL OR RIGHT VAT LEFT VAT 3-32 24 VOLT CIRCUIT With Interface Board 806-3398 or 106-0386 and One 807-3366 (FV) Ignition Module 3-33 3.8.2 Troubleshooting the Gas Valve 3-34 3.8.3 Troubleshooting the Temperature Probe Note: Disconnect computer before measuring probe resistance. 3-35 3.9 Probe Resistance Chart Probe Resistance Chart For use with H52 Series fryers manufactured with Minco Thermistor probes only. FOHMSC FOHMSC FOHMSC FOHMSC FOHMSC 3-36 Probe Resistance Chart (Continued) For use with H52 Series fryers manufactured with Minco Thermistor probes only. FOHMSC FOHMSC FOHMSC FOHMSC FOHMSC 3-37 3.10 Simplified Wiring Diagrams H52 SERIES FULL-VAT JUNE 1996 - JULY 1999 DRAIN SAFETY SWITCH ONLY ON BIH52 MODELS AIR SWITCH ONLY ON CE AND SOME EXPORT UNITS HOOD RELAY 3-38 H52 SERIES FULL-VAT BEFORE JUNE 1996 & AFTER JULY 1999 MODULE LEFT IGNITION MODULE LINE VOLTAGE H52 SERIES FULL-VAT WITH ONE DUAL-SPARK IGNITION MODULE SINGLE-SPARK IGNITION BE EQUIPPED WITH TWO MODULE. OTHERS MAY DUAL-SPARK IGNITION H52 SERIES DUAL-VAT JUNE 1996 - JULY 1999 MODULE LEFT IGNITION MODULE DRAIN SAFETY SWITCH H52 SERIES DUAL-VAT BEFORE JUNE 1996 & AFTER JULY 1999 MODULE LEFT IGNITION MODULE (TWO DUAL-FUNCTION HEAT/BLOWER RELAYS (K1 & K2) AND TWO IGNITION MODU LES) 3-42 3.11 Principal Wiring Connections C4 C1 J3 BIH152 Main Wiring Diagram (U.S., CE, and Non-CE Export) 8050926E T M 3-44 8050502G BIH52/MH52 Main Wiring Diagram (U.S. and Non-CE Export) Old Single-Spark Ignition Module PWR WHT 2 BIH52/MH52 Main Wiring Diagram (U.S. and Non-CE Export) New Dual-Spark Ignition Module 3-46 BLACK C5 BIH52/MH52 Main Wiring Diagram (CE) Old Single-Spark Ignition Module BIH52 Filter Box Wiring Diagram (U.S., CE, and Non-CE Export) 3-47 3-48 MH152 Transformer Wiring Diagram (U. S. and Non-CE Export) 120V CONFIGURATION SHOWN 2 31 N 8050504C MH152 Transformer Wiring Diagram (CE) BIH252/MH252 Transformer Box Wiring Diagram (U.S. and Non-CE Export) 3-50 BIH352/MH352 Transformer Box Wiring Diagram (U.S. and Non-CE Export) 3-51 3-52 8050500E 56 BIH452/MH452 Transformer Box Wiring Diagram (U.S. and Non-CE Export) 120 VOLTS 2 LINECOM 14 1 56 BIH452/MH452 Transformer Box Wiring Diagram (CE) 18C BLUE FRYER 1 6C BLUE NOTE: Also used for CE BIH252/MH252 and CE BIH352/MH352 Transformer Boxes. CHAPTER 4: PARTS LIST 4-2 4.2 Cabinetry Components 4.2 .1 BIH152 and MH152 Cabinet Components MH152 BIH152 Page 4-4 4.2.2 BIH52 Cabinet Components (Batteries) Detail of Gusset and Filter Rail Construction Detail of Base Assembly Construction NOTE: Items 26 and 27 are not used on CE units. 4-5 4.2.2 BIH152 Cabinet Components (Batteries) cont. Page 4-7 4.2.3 MH52 Cabinet Components (Batteries) cont. * Not illustrated. LIST CONTINUED ON NEXT PAGE Page Page 4-9 4.2.4 BIH52/MH52 Cap-N-Splash Assemblies, Fluecaps, Standoffs and Related Parts Page Page Page 4-13 4.3 Combustion System, Frypot and Gas System Components 4.3.1 Blowers and Associated Parts 4-14 4.3.2 Ignition Sub-System Components ITEM PART # COMPONENT 4-15 4.3.3 Frypot Assembly Components 4.3.3.1 Full Vat Kits.) Kits and Insulation Full Vat Frypot 4-16 4-17 4.3.3.2 Dual Vat Kits and Insulation Dual Vat Frypot Components (See Page 4-19 for list of Service Frypot 4-18 Page Page 4-21 4.3.6 Gas Manifolds BIH52/MH52 Multi-Fryer Units Typical Configuration for Systems using non-CE Gas Valves 826-1122 or 826-1123 Typical Configuration for Systems using CE Gas Valve 810-1715 Full Vat (left) and Dual Vat (right) Manufactured Gas Configurations (MH52 and BIH52) Page 4-23 4.3.7 Gas Valves, Gas Lines and Fittings Page 4-25 4.4 Electronics 4.4.1 Computers, Controllers and Associated Components 2 1 1 2 Discontinued M100B Computer. Replaced by M2000 computer. Page 4-27 4.4.2 Component Boxes Page 4-29 4.4.4 Transformer Box Components ssy. PN 806-8338SP BIH452/MH452 BIH152 4-30 Page Power Cords NOTES: 4-34 4-35 4.5.1.2 Drain Valve Assemblies and Associated Components Locknut separate items. face-to-face. 4-36 4-37 4.5.2 Filtration System Components 4.5.2.1 Filter Base Assemblies Page 4-39 4.5.2.2 Filter Motor and Pump Plumbing Prior to September 1999 Standard BIH52 Filter Motor and Pump September 1999 and Later 4-40 4-41 4.5.2.3 Filter Pan Assemblies and Associated Components Page 4-43 4.5.2.4 Rear Flush Oil Return Components NOTE: