Lincoln Countertop Impinger, Service Manual

Page: 47 / 64

CounterTop – 1300 Series Service Manual 47
MAIN FAN RELAY
1. Remove control box cover
2. Remove wires from relay and mark wires for reinstallation.
3. Remove two (2) screws and replace relay.
4. Reassemble in reverse order and check operation.
TIME DELAY RELAY
1. Remove control box cover.
2. Remove wires from relay and mark wires for reinstallation. CAUTION: Resistor should be jumpered
across terminals #2 and #3 on some of the early models (SN 3000352 and below) this jumper was
installed across terminals #1 and #3 which may cause failure of the timer. Correct when replacing
timer.
3. Remove screw and replace relay.
4. Reassemble in reverse order and check operation.
NOTE: Do not overtighten mounting screw as this could damage timer.
RELAY CONTACTOR
1. Remove control box cover.
2. Remove wires and mark wires for reinstallation.
3. Remove four (4) mounting screws and replace contactor.
4. Reassemble in reverse order and check operation.
TRANSFORMER - CONVEYOR
1. Remove control box cover.
2. Disconnect wires from primary and secondary of transformer. Mark wires for reinstallation (#23-blue-
208V connection/#24-red-240V connection).
NOTE : Wire nut one not being used.
3. Remove two (2) mounting screws and replace.
4. Reassemble in reverse order and check operation.
CONVEYOR DRIVE MOTOR
1. Remove conveyor (see Installation and Operations Manual).
2. Remove screw from center of coupling sleeve assemby. and slide coupling assembly off motor shaft.
3. Remove control box cover.
4. Disconnect motor leads and mark wires for reinstallation and conveyor direction.
5. Remove four (4) motor mounting screws and replace motor.
6. Reassemble in reverse order and check operation.
NOTE : Check to insure coupling and conveyor shaft are aligned.
NOTE : Starting with SN 3000481 all conveyor drives will be a closed loop system. The drive motor
assembly will include a hall effect sensor board and magnet. No calibration required.
S/N 3000480 and Below --Check calibration of conveyor control board (See "Conveyor control board
calibration")
S/N 3000481 and Above --Attach correct magnet to conveyor motor assembly.