Vulcan-Hart GHF90G ML-135504, GHF91G ML-135503 service manual Troubleshooting

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TROUBLESHOOTING

SYMPTOM

POSSIBLE CAUSE

 

 

4. Leaking tank.

5.Pilot burner flames adjusted properly, but fluctuate to very low and blow out easily.

A.Foam-over by depleted shortening permits oil to drip from the tank surface, giving the appearance of leaking.

B.Careless draining procedures. Gas valve should be in the PILOT or OFF position before draining oil. Burners heating an empty tank will damage tank joints.

C.Carbon buildup causes rapid attack on tank by promoting acid formulation.

A.Check gas pressure at submanifold fitting on fryer when fryer is in operation. Check all other equipment on the same gas line in operation.

B.Pressure at submanifold (pipe on which burners are mounted) should not be less than 4.0" W.C. (natural and mixed gas) or 10" W.C. for propane gas.

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Contents GHF Series Heavy Duty Range Matching GAS Fryers & Frymates Table of Contents Tools SpecificationsGeneral IntroductionDoor Removal and Replacement of PartsCovers and Panels BurnersThermostat Thermopile High LimitCombination Valve Pilot OrificeFRY Tank Calibration Steps Service Procedures and AdjustmentsMillivolt Controls Test Thermostat CalibrationNozzles and Orifices Pilot AdjustmentBURNERS, Nozzles and Orifices BurnersCombination Valve Regulator Adjustment System Condition Quick Check Procedures Electrical OperationControl System Description Schematic Component Function Symptom Possible Cause TroubleshootingTroubleshooting Form 35618
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