GR SERIES GAS FRYERS - SERVICE PROCEDURES AND ADJUSTMENTS
A.If adjustment is necessary, continue with procedure.
4.Remove the adjustment screw cap from the gas combination valve.
NON FILTER READY SHOWN
A.To increase pilot flame, turn the screw counterclockwise. To decrease pilot flame, turn the screw clockwise.
5.With the pilot burner lit, turn gas combination valve knob/extension arm to on and set the control thermostat to call for heat.
A.If main burners do not light or pilot burner goes out, proceed to MILLIVOLT CONTROLS TEST.
MILLIVOLT CONTROLS TEST
1.Verify millivolt control circuit wiring is correct and connections are clean and secure.
2.Verify pilot burner flame is adjusted properly as outlined under PILOT BURNER FLAME ADJUSTMENT.
3.With control thermostat off and gas combination valve knob/extension arm in the pilot position, allow pilot to burn for
4.Verify thermopile output voltage.
A.Set VOM to DC millivolt scale and connect meter leads to N.O. and COM terminals on the high limit thermostat.
1)If 450 millivolts or greater is measured, the thermopile is functioning properly. Continue with test.
2)If less than 450 millivolts is measured, install a replacement thermopile as outlined under THERMOPILE in REMOVAL AND REPLACEMENT OF PARTS.
5.Turn gas combination valve knob/extension arm to on and set the control thermostat to call for heat.
6.Verify main burners light and remain lit.
A.If main burners operate as described, the millivolt controls are functioning properly.
B.If main burners do not light, continue with test.
7.Verify control thermostat contacts are closing.
A.Connect meter leads to the TH terminal on gas combination valve and COM terminal on the high limit thermostat.
1)If 150 millivolts or greater is measured, control thermostat is functioning properly. Replace gas combination valve as outlined under GAS COMBINATION VALVE in
REMOVAL AND REPLACEMENT OF PARTS.
F25125 (March 2003) |
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