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45 SERIES GAS FRYERS SERVICE AND PARTS MANUAL
TABLE OF CONTENTS
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CHAPTER 1: Service Procedures
1.1 Functional Description....................................................................................................1-1
Pilot Ignition System.......................................................................................................1-1
Control Options...............................................................................................................1-1
Interface Boards ..............................................................................................................1-1
Thermostats and Temperature Probes.............................................................................1-3
1.2 Accessing Fryers for Servicing.......................................................................................1-4
1.3 Checking the Burner Manifold Gas Pressure..................................................................1-4
1.4 Adjusting the Pilot Flame ...............................................................................................1-5
1.5 Cleaning the Gas Valve Vent Tube ................................................................................1-6
1.6 Adjusting Burner Ceramic Target Spacing and Alignment............................................1-6
1.7 Calibrating the Thermostat Control ................................................................................1-6
1.8 Replacing Fryer Components .........................................................................................1-7
1.8.1 Replacing the Controller or Computer............................................................................1-7
1.8.2 Replacing the Operating Thermostat ..............................................................................1-8
1.8.3 Replacing the Temperature Probe...................................................................................1-8
1.8.4 Replacing the Hi-Limit Thermostat in Fryers with Thermostat Controls.......................1-9
1.8.5 Replacing the Hi-Limit Thermostat in Fryers with Other Than Thermostat Controls .1-10
1.8.6 Replacing the Heat Mode Indicator Light in Fryers with Thermostat Controls ...........1-10
1.8.7 Replacing the Power or Melt Cycle Switch in Fryers with Thermostat Controls ........1-11
1.8.8 Replacing the Melt Cycle Timer in Fryers with Thermostat Controls .........................1-11
1.8.9 Replacing Burner Ceramic Targets...............................................................................1-12
1.8.10 Replacing the Gas Valve...............................................................................................1-12
1.8.11 Replacing the Pilot Assembly or Thermopile...............................................................1-13
1.8.12 Replacing the Frypot.....................................................................................................1-14
1.9 Troubleshooting and Problem Isolation........................................................................1-15
1.9.1 Ignition Failures ............................................................................................................1-16
1.9.2 Improper Burner Functioning .......................................................................................1-17
1.9.3 Improper Temperature Control .....................................................................................1-18
1.9.4 Computer-Related Problems.........................................................................................1-19
1.9.5 Filtration Problems........................................................................................................1-20
1.9.6 Leakage Problems.........................................................................................................1-22
1.9.7 Basket Lift Malfunctions ..............................................................................................1-22
1.9.8 Interpretation of Digital Controller Lights....................................................................1-28
1.10 Troubleshooting Guides................................................................................................1-28
1.10.1 Troubleshooting the 24 VAC Circuit in Units without Interface Boards .....................1-29
1.10.2 Troubleshooting the 24 VAC Circuit in Units with Interface Boards ..........................1-30
1.10.3 Troubleshooting the Gas Valve ....................................................................................1-32
1.10.4 Troubleshooting the Thermostat ...................................................................................1-33
1.10.5 Troubleshooting the Temperature Probe ......................................................................1-34
Probe Resistance Chart .................................................................................................1-35
1.11 Wiring Diagrams..............................................................................................................1-36