Manuals / Vulcan-Hart / Kitchen Appliance / Fryer

Vulcan-Hart GR35F, GR45, GR85F, GR65F Troubleshooting, All Models, Symptoms, Possible Causes

Models: GR85 GR35 GR25 GR45F GR35F GR65F GR85F GR65 GR45

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TROUBLESHOOTING

GR SERIES GAS FRYERS - TROUBLESHOOTING

TROUBLESHOOTING

ALL MODELS

SYMPTOMS		POSSIBLE CAUSES
Pilot burner will not light.	1.	Gas supply off.
	2.	High limit thermostat open or malfunction.
	3.	Incorrect gas type.
	4.	Pilot burner flame adjustment too low.
	5.	Pilot burner orifice obstructed or incorrect.
	6. Gas combination valve malfunction.

Pilot burner lights but will not maintain flame.	1.	Pilot burner flame adjustment too low.
	2.	Pilot burner orifice obstructed or incorrect.
	3.	Thermopile malfunction.
	4.	Insufficient gas pressure.
	5.	High limit thermostat malfunction.
	6.	Gas combination valve malfunction.

Pilot burner adjusted properly but flame	1.	Insufficient gas pressure due to other equipment
fluctuates or goes out.		operating on same line.
	2.	Excessive drafts.
		A. Vent hood not adjusted properly.
		B. Fryer door open or removed.

Main burner(s) light but will not maintain	1.	Insufficient gas pressure.
flame.	2.	Main burner(s) gas orifice obstructed or incorrect.
	3.	Thermopile malfunction
	4.	Main burner(s) malfunction.
	5. Gas combination valve malfunction.

Fryer does not heat, pilot burner lit.	1.	Control thermostat off or malfunctioning.
	2. Gas combination valve malfunction.
	3.	Wiring connections loose or wiring malfunction.

Excessive or low heat.	1.	Control thermostat calibration or malfunction.
	2.	Gas pressure incorrect.
	3.	Main burner(s) gas orifice obstructed or incorrect.
	4.	Flue obstructed.
	5.	Vent hood not adjusted properly.
	6.	Fryer load capacity exceeded.

High limit thermostat shutting off main	1.	Shortening level below minimum fill line.
burners.	2.	Control thermostat malfunction.
	3.	High limit thermostat malfunction.

Main burners light when control thermostat is	1.	Control thermostat malfunction.
turned off.	2.	Control thermostat terminals shorted or lead wire
		grounded.
	3.	Gas combination valve malfunction.

F25125 (March 2003)		Page 22 of 24

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Vulcan-Hart GR35F, GR85F, GR65F, GR45F, GR25 service manual Troubleshooting, All Models, Symptoms, Possible Causes

Contents

MODEL GR SERIES GAS FRYERS WITH MILLIVOLT CONTROLSMODEL TABLE OF CONTENTS GENERAL SINGLE FLOOR MODEL OR BATTERY FRYERSINTRODUCTION Models and Features KLEENSCREEN FILTERING SYSTEMModel Designations TOOLS REMOVAL AND REPLACEMENT OF PARTSSPECIFICATIONS FRONT PANELCONTROL THERMOSTAT HIGH LIMIT THERMOSTATMAIN BURNERS MAIN BURNER ORIFICE GAS COMBINATION VALVEPILOT BURNER THERMOPILEFRY TANK ASSEMBLY FILTER VALVE AND DISCARD VALVE SWITCHES PUMP AND MOTORSERVICE PROCEDURES AND ADJUSTMENTS CONTROL THERMOSTAT CALIBRATIONGAS MANIFOLD PRESSURE ADJUSTMENT PILOT BURNER FLAME ADJUSTMENTMILLIVOLT CONTROLS TEST FRYER CONTROLS ELECTRICAL OPERATIONCOMPONENT FUNCTION KLEENSCREEN FILTER CONTROLSGR35 NON FILTER READY SHOWN COMPONENT LOCATION2GR45F KLEENSCREEN FRYER BATTERY SHOWN GR45 FILTER READY SHOWNMillivolt Controls SEQUENCE OF OPERATIONKleenscreen Filtering System F25125 March SCHEMATIC DIAGRAMGR SERIES GAS FRYERS - ELECTRICAL OPERATION Page 18 ofPage 19 of WIRING DIAGRAMSGR SERIES GAS FRYERS - ELECTRICAL OPERATION F25125 MarchF25125 March GR SERIES GAS FRYERS - ELECTRICAL OPERATIONJunction Box, Kleenscreen Filtering System Page 20 ofPage 21 of GR SERIES GAS FRYERS - ELECTRICAL OPERATIONFrymate Dump Station F25125 MarchALL MODELS TROUBLESHOOTINGSYMPTOMS POSSIBLE CAUSESSYMPTOM SYMPTOMFRYMATE DUMP STATION WITH OPTIONAL HEATER KLEENSCREEN FILTERING SYSTEMKLEENSCREEN FILTER CONDENSED SPARE PARTS LISTGR SERIES GAS FRYERS WITH MILLIVOLT CONTROL