Frymaster FPGL330CA - CHAPTER 1: Service Procedures; Functional Description and Core Systems

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OCF30
™
SERIES GAS FRYERS
TABLE OF CONTENTS
CAUTIONARY STATEMENTS ...................................................................................................................... i
CHAPTER 1: Service Procedures
1.1 Functional Description ................................................................................................................... 1-1
1.2 The Electronic Ignition System ...................................................................................................... 1-1
1.3 Interface Board ............................................................................................................................... 1-2
1.4 Thermostats .................................................................................................................................... 1-4
1.5 Accessing Fryers for Servicing ....................................................................................................... 1-4
1.6 Cleaning the Gas Valve Vent Tube ................................................................................................ 1-5
1.7 Checking the Burner Manifold Gas Pressure ................................................................................. 1-5
1.8 Measuring Flame Current ............................................................................................................... 1-6
1.9 Replacing Fryer Components ......................................................................................................... 1-7
1.9.1 Replacing the Controller or the Controller Wiring Harness ........................................... 1-7
1.9.2 Replacing the Temperature Probe or High-Limit Thermostat ....................................... 1-7
1.9.3 Replacing the Interface Board ........................................................................................ 1-8
1.9.4 Replacing an Ignition Module ........................................................................................ 1-8
1.9.5 Replacing an Ignitor Assembly ...................................................................................... 1-8
1.9.6 Replacing or Cleaning a Combustion Air Blower .......................................................... 1-9
1.9.7 Adjusting the Air/Gas Mixture ..................................................................................... 1-10
1.9.8 Replacing a Gas Valve ................................................................................................. 1-11
1.9.9 Replacing a Burner Assembly ...................................................................................... 1-12
1.9.10 Replacing the Filter Motor, Filter Pump, or Filter Pump Solenoid Valve ................... 1-13
1.9.11 Replacing the Frypot .................................................................................................... 1-13
1.9.12 Replacing Frypot Insulation and/or Upper Burner Rails .............................................. 1-14
1.10 Troubleshooting and Problem Isolation ....................................................................................... 1-17
1.10.1 Ignition Failure ............................................................................................................. 1-18
1.10.2 Improper Burner Function ............................................................................................ 1-18
1.10.3 Improper Temperature Control .................................................................................... 1-20
1.10.4 Computer Malfunction ................................................................................................. 1-20
1.10.5 Filtration Malfunction .................................................................................................. 1-20
1.10.6 Leakage ........................................................................................................................ 1-21
1.10.7 Basket Lift Malfunction ............................................................................................... 1-21
1.11 Troubleshooting Guides ............................................................................................................... 1-23
1.11.1 Troubleshooting the 24 VAC Circuit ........................................................................... 1-23
1.11.2 Troubleshooting the Gas Valve .................................................................................... 1-26
1.11.3 Troubleshooting the Temperature Probe ...................................................................... 1-27
1.11.4 Replacing the Transformer, Reset Switch or Filter Relay ............................................ 1-27
1.12 Probe Resistance Chart ................................................................................................................. 1-28
1.13 ATO (Automatic Top-Off) Service Procedures ........................................................................... 1-28
1.13.1 ATO (Automatic Top-Off Troubleshooting ................................................................. 1-28
1.13.2 ATO (Automatic Top-Off) Board Positions and Harnesses......................................... 1-31
1.13.3 Replacing the ATO Board, Pump Relay or Transformer ............................................. 1-32
1.13.4 Replacing the ATO Pump ............................................................................................ 1-32
1.13.5 Replacing the ATO Solenoid ....................................................................................... 1-32
1.13.6 Control Power Reset..................................................................................................... 1-33
1.13.7 Testing ATO RTD Probes ............................................................................................ 1-33
1.13.8 Replacing ATO Probe .................................................................................................. 1-33
1.14 3000 Computer Service Procedures ............................................................................................. 1-33
1.14.1 3000 Computer Troubleshooting ................................................................................. 1-33
1.14.2 3000 Useful Codes and Passwords ............................................................................... 1-36