Impinger I -–1000 Series Service Manual - Domestic 35
MOTOR CENTRIFUGAL
SWITCH
RED
RED
24 VAC TO
IGNITION CONTROL
TO GROUND TERMINAL
ON IGNITION CONTROL
GROUND 24 VAC
120 VAC
GREEN
WHITE
BLACK
(BUTTSPLICE CONNECTORS PROVIDED FOR 120 VAC POWER SUPPLY)
WIRING DIAGRAM
BURNER BLOWER ASSEMBLY
WITH RELAY REMOVED
TRANSFORMER
P/N 369531
(WHEN USING OLD
TRANSFORMER, 120
VAC LEADS ARE BLACK.
WIRE TERMINALS ARE
PROVIDED.)
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 bre aker.
2. Remove control panel to p and front cover.
3. Remove air shutter held b y 3 screws.
4. Loosen set screw on bl ower wheel hub and pull straight out.
5. Reassemble in revers e order.
NOTE: There is no critical placement of the blower wheel on the motor s haft. Just back as
far as it will go and then spin the blower to be sure it is not rubbing.
AIR PRESSURE SWITCH
1. Shut off power at main bre aker.
2. Remove front control com partment cover.
3. Remove air switch co ver plate.
4. Disconnect wiring and m ark for reassembly.
5. Loosen 2 screws and rem ove air switch.
6. Disconnect 1/4" air tube.
7. Reassemble in revers e order.
8. Turn on power and cal ibrate air switch as follows:
Turn adjusting screw counter clockwise to full out position.
Turn main fan and heat switch on.
Turn adjusting screw clockwise until heat shuts off.
Turn adjusting screw counterclockwise 1/4 turn and unit should heat.
NOTE: Test as follows:
Oven must be tested in heated condition.
Remove main fan fuse. Main fan should shut down, deactivating air switch ca using
heat to shut off in approximately 5 to 25 seconds.