Conveyor Control Board Assembly - Replacement - Lincoln 1400 Series Service Manual

BURNER CONTROL TRANSFORMER -REPLACEMENT
1. Shut power off at main breaker.
2. Remove control panel top and front cover.
3. Remove two (2) wires on primary side, note color and location.
4. Remove two (2) wires on secondary side, note color and location.
5. Remove two (2) screws from transformer base and replace assembly.
6. Reinstall in reverse order and check system operation.
HEAT LIGHT
1. Shut off power at main breaker.
2. Remove control panel top and front panel.
3. Remove the two wires from burner light, note number and location.
4. Grasp body of light assembly and slide sideways to remove.
5. Reassemble in reverse order and check.
CONVEYOR CONTROL POTENTIOMETER (10K OHM) - REPLACEMENT
1. Shut power off at main breaker.
2. Remove control panel top and front cover.
3. Remove the access cover.
4. Loosen two (2) allen screws and remove knob by sliding off shaft.
5. Remove mounting nut from potentiometer shaft and push out.
6. Unplug wire connector from conveyor control board.
7. Reassemble in reverse order and check system operation. Recalibrate knob as needed.

CONVEYOR CONTROL BOARD ASSEMBLY - REPLACEMENT

1. Shut power off at main breaker.
2. Remove control panel top and front cover.
3. Remove two (2) top screws and loosen one (1) bottom screw from control assembly.
4. Disconnect wiring (Push on connectors) from control board, note proper location of connectors for reinstallation and
exchange boards on the mounting bracket before reinstallation.
5. Reassemble in reverse order and check system operation.
NOTE: Control boards are calibrated at the factory and no board adjustment is required.
CONVEYOR DRIVE MOTOR - REPLACEMENT
1. Shut power off at main breaker.
2. Remove control panel top and front cover.
3. Loosen set screw on conveyor drive sprocket and slide sprocket off shaft.
4. Disconnect motor plug and wiring for hall effect sensor board.
5. Remove four (4) screws from motor frame, on control box side, and remove motor assembly.
6. Remove sensor board. * See Note
7. Reassemble in reverse order making sure to align chain sprockets and adjust motor for proper chain tension
( 1/2" SAG).
NOTE: When replacing the drive motor it will be necessary to also install a new magnet on the
shaft up against the shoulder and cement in place.
REVERSING CONVEYOR DIRECTION
All ovens leaving our plant are wired to operate conveyors from left to right. To reverse conveyor
direction, use the following procedure.
1. Shut off power at main breaker.
2. Remove control panel top.
3. Remove cover from relay box.
4. Reverse wires fastened to terminals A+ and A- on conveyor control board
5. Reassemble in reverse order.
26 Impinger I – 1400 Series Advantage Service Manual - Dom & Int'l