Impinger 3270 Service Manual – Dom & Int’l
19
CONVEYOR DRIVE MOTOR – REPLACEMENT
WITH POWER OFF:
A. Shut off power at main breaker.
B. Remove drive chain and drive sprocket from conveyor motor.
C. Remove control panel top and front cover.
D. Disconnect motor connector (6 pin connector).
E. Remove 4 mounting bolts and remove conveyor motor.
F. Reassemble in reverse order.
REVERSING SWITCH – REPLACEMENT
WITH POWER OFF:
A. Shut power off at main breaker.
B. Remove control panel top.
C. Disconnect wiring from reversing switch and mark all wiring for reassembly.
(See schematic diagram for wire numbers.)
D. Remove mounting nut from reversing switch and remove reversing switch and reversing switch cover.
E. Reassemble in reverse order.
REVERSING CONVEYOR DIRECTION
A. Shut off power at oven switch.
B. Set reversing switch in the other position.
C. Turn oven “on” and check for proper operation.
BURNER RESET SWITCH – REPLACEMENT – INTERNATIONAL ONLY
WITH POWER OFF:
A. Remove appropriate control box cover.
B. Disconnect wires from ignition control (see ignition control). Note wire number and location for reassembly.
C. Pull off black operating knob and remove hex mounting nut.
D. Reassemble in reverse order.
BURNER ALARM – REPLACEMENT – INTERNATIONAL ONLY
WITH POWER OFF:
A. Remove appropriate control box cover.
B. Remove 2 wires from alarm. Note wire number and location for reassembly.
C. Remove retainer cover from alarm and remove assembly from control box.
D. Reassemble in reverse order and check system operation.
AIR PRESURE SWITCH – REPLACEMENT – INTERNATIONAL ONLY
WITH POWER OFF:
A. Remove appropriate control box cover.
B. Disconnect wires from switch making note of wire number and location for reinstallation.
C. Remove air tube from switch assembly.
D. Remove mounting screws to remove air pressure switch.
E. Reassemble in reverse order. Make sure air tube is not blocked or misaligned.
To adjust air pressure switch, remove cover from the switch to expose adjusting screw. To increase
sensitivity, turn screw counter-clockwise. To decrease sensitivity, turn screw clockwise. Check for
proper line voltage switching from N.C. to N.O. as the air pressure switch closes.
FUSEHOLDER – REPLACEMENT
WITH POWER OFF:
A. Remove appropriate control box cover.
B. Remove two (2) wires, note wire number and location.
C. Remove mounting nut on back side of fuse holder and push out.
D. Reinstall in reverse order and check system operation.
