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Impinger I – Adv Digital – Gas Service Manual – International
13
THERMOSTAT, COOLING FAN - REPLACEMENT
1. Shut off power at main breaker.
2. Remove control panel top and front cover.
3. Remove lead wires and mark for reassembly.
4. Remove two (2) screws and remove thermostat.
5. Reassemble in reverse order.
BURNER BLOWER MOTOR - REPLACEMENT
1. Shut off power at main breaker.
2. Remove control panel top and front cover.
3. Unplug motor connector.
4. Remove three (3) screws from blower tube at burner housing.
5. Remove air shutter assembly from old motor for installation on new
motor assembly.
6. Reassemble in reverse order and check system operation.
NOTE: Check air shutter adjustment and adjust if necessary
Set air shutter at approx. 1/4" and adjust to get a blue flame
with an occasional tip of yellow under high flame. A view
port in the burner assembly should be used to observe flame.
BLOWER WHEEL, BURNER
This is part of the burner blower motor assembly.
TO REMOVE THE BLOWER WHEEL FOR PERIODIC CLEANING:
1. Shut off power at main breaker.
2. Remove control panel top and front cover.
3. Remove air shutter held by 3 screws.
4. Loosen set screws on blower wheel hub and pull straight out.
5. Reassemble in reverse order.
NOTE: There is no critical placement of the blower wheel on the motor shaft. Just back as far as
it will go and then spin the blower to be sure it is not rubbing.
BURNER CONTROL – REPLACEMENT (S/N N31348 and Below)
1. Shut off power at main breaker.
2. Remove control panel top and front cover.
3. Remove front portion of control by releasing tabs on sides and pulling out (rocking motion).
4. Remove wires from plug in terminal strip, note wire numbers and location.
5. Remove two screws from mounting bracket and remove.
6. Reassemble in reverse order and check system operation.
BURNER CONTROL – REPLACEMENNT (S/N N31349 and above)
1. Shut off power at main breaker.
2. Remove control panel top and front cover.
3. Remove wires from control. Mark all wiring for reassembly.
4. Remove two mounting screws from control and remove control.
5. Reassemble in reverse order and check system operation.
BURNER ASSEMBLY
1. Shut off power at main breaker.
2. Shut off gas supply.
3. Remove control panel top and front panel.
4. Remove gas control valve (See "GAS CONTROL VALVE")
5. Disconnect pilot tube.
6. Remove solenoid valve. (See "TEMPERATURE REGULATION VALVE")
7. Remove four (4) screws that secure the burner backing plate.