Vulcan-Hart GHF91G ML-135503, GHF90G ML-135504 service manual High Limit, Thermopile

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HIGH LIMIT

WARNING: SHUT OFF THE GAS BEFORE SERVICING.

1.Drain shortening from fry tank.

2.Remove wire leads from high limit, noting all connections for reassembly.

3.Remove high limit from mounting bracket.

4.Remove left burner as outlined under Burners.

5.Loosen the packing nut and the holding nut.

6. Remove the high limit bulb from the clamp.

7.Pull the high limit bulb through the underside of the fry tank and remove the high limit assembly.

8.Reverse the procedure to install. When installing the new high limit assembly, do not kink the high limit capillary. Wrap threads of packing nut with Teflon tape to prevent leakage.

THERMOPILE

WARNING: SHUT OFF THE GAS BEFORE SERVICING.

WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME.

1.Disconnect thermopile lead wires as outlined under High Limit.

2.Remove (1) 10-24 screw and pull the pilot assembly away from the tank body.

3.Remove (2) side screws to detach the pilot from the holding bracket.

4.Remove pilot tubing from pilot.

5.Remove screws holding pilot bracket.

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Contents GHF Series Heavy Duty Range Matching GAS Fryers & Frymates Table of Contents Introduction SpecificationsGeneral ToolsBurners Removal and Replacement of PartsCovers and Panels DoorThermostat High Limit ThermopilePilot Orifice Combination ValveFRY Tank Thermostat Calibration Service Procedures and AdjustmentsMillivolt Controls Test Calibration StepsBurners Pilot AdjustmentBURNERS, Nozzles and Orifices Nozzles and OrificesCombination Valve Regulator Adjustment System Condition Quick Check Procedures Electrical OperationControl System Description Schematic Component Function Troubleshooting Symptom Possible CauseTroubleshooting Form 35618