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Impinger II – 1100-000-A Series (SN 2038615 & Below) Service Manual –Int’l
20
BURNER ALARM – REPLACEMENT
. Shut off power at main breaker.
. Remove control panel top and front cover.
. Remove two wires from burner alarm and mark for reassembly.
. Remove mounting ring from burner alarm and remove from control box.
. Reassemble in reverse order and check system operation.
SPARK GENERATOR – REPLACEMENT
. Shut off power at main breaker.
. Remove control panel top and front panel.
. Remove all wires from spark generator and mark for reassembly.
. Remove two mounting screws and remove spark generator.
. Reassemble in reverse order and check system operation.
MAIN BURNER ORIFICE – REPLACEMENT
. Shut power at main breaker.
. Shut off gas supply to oven.
. Remove control panel top and front cover.
. Remove burner manifold. (See “TEMPERATURE REGULATION VALVE”)
. Remove main burner orifice from burner manifold.
. Reassemble in reverse order and check system operation. Check all gas line fittings for leaks.
MERURY CONTACTOR – REPLACEMENT
. Shut off power at main breaker.
. Remove control panel top and front cover.
. Disconnect all wires from mercury contactor and mark for reassembly.
. Remove mounting screws and remove mercury contactor.
. Reassemble in reverse order and check system operation.
AIR PRESSURE SWITCH – MAIN FAN - REPLACEMENT AND ADJUSTMENT
. Shut off power at main breaker.
. Remove control panel top and front cover.
. Disconnect all wires and mark for reassembly.
. Disconnect air switch tube from air pressure switch.
. Remove mounting screws and remove air pressure switch.
. Reassemble in reverse order and check system operation. Adjust air pressure switch as needed.
. To adjust air pressure switch, turn adjusting screw fully counter clockwise. With heat on, turn adjusting screw
clockwise until heat shuts off. Turn adjusting screw ¼ turn counter clockwise and unit should heat.
AIR PRESSURE SWITCH – BURNER MOTOR – REPLACEMENT AND CALIBRATION
. Shut off power at main breaker.
. Remove control panel top and front cover.
. Disconnect all wires and mark for reassembly.
. Remove air tube from air pressure switch and remove air pressure switch from hanger.
. Reassemble in reverse order and check system operation. Adjust air pressure switch as needed.
. To adjust air pressure switch, remove cover over terminals to access adjustment screw. To increase
sensitivity, turn screw counter clockwise. Check for proper line voltage switching from N.C. to N.O. as the air
pressure switch closes.
HEATING ELEMENT – REPLACEMENT
. Shut off power at main breaker.
. Remove back cover.
. Disconnect motor wires and heating element wires and mark for reassembly.
. Remove oven back from oven.