Lincoln 1454, 1455, 1421-000-E Control Transformer Replacement, Conveyor Drive Motor Replacement

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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.

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.

5.Remove four (4) screws from motor frame, on control box side, and remove motor assembly.

6.Reassemble in reverse order making sure to align chain sprockets and adjust motor for proper chain tension (1/2" SAG).

CAPACITOR, CONVEYOR MOTOR – REPLACEMENT

1.Shut off power at main breaker. 2.Remove control box cover and front panel.

3.Discharge capacitor before removing wires. Mark wires for reassembly. 4.Remove mounting screw and remove capacitor.

5.eassemble in reverse order and check system operation.

REVERSING SWITCH – REPLACEMENT

1.Shut off power at main breaker.

2.Remove control box cover and front panel.

3.Disconnect wires from reversing switch and mark for reassembly.

4.Remove mounting nut and remove reversing switch.

5.Reassemble in reverse order and check system operation.

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 oven switch.

2.Set conveyor reversing switch in the other position.

3.Turn oven “on” and check for proper operation.

ON-OFF SWITCH - REPLACEMENT

1.Shut off power at main breaker.

2.Remove control box cover.

3.Remove access cover.

4.Depress spring clips on side of switch and push out.

5.Remove wires from back of switch, note wire number and location.

6.Reassemble in reverse order and check system operation.

NOTE: Make sure switch housing is fully seated in control box housing.

OVEN CONTROL – REPLACEMENT

A.Shut off power at main breaker.

B.Remove control box cover and front panel.

C.Remove all wiring connections and mark for reassembly.

D.Remove oven control by pulling control from the mounting pins. Remove control from oven.

E.Before installing new oven control, set voltage jumper (located at the bottom center of the oven control) to the proper voltage (120V/240V) position. Install the four pushbutton extensions

Impinger I -–Adv Digital – Electric Service Manual - International

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Contents Impinger Conveyor Ovens Control BOX Auto PhasePower Supply Temperature ControlModel 220/380VAC 50 HZ Schematic Diagram Serial Number N28654 and Above Troubleshooting Guide Symptom Possible Cause Evaluation With Power on and Thermocouple Belt JAM Before Removing or Installing ANY Component in the ImpingerOven be Sure to Disconnect Electrical Power and GAS Supply Impinger Advantage SeriesFAN Spider FAN HUB Cone Thermocouple Measurment Temperature Millvolts Approx THERMOSTAT, Oven Cavity HI-LIMIT ReplacementAIR Pressure Switch Replacement Thermocouple Type K ReplacementReversing Switch Replacement Control Transformer ReplacementConveyor Drive Motor Replacement CAPACITOR, Conveyor Motor ReplacementHI-LIMIT Contactor Replacement Fuse Holder ReplacementBEARING, Conveyor Replacement Heat Contactor ReplacementTHERMOSTAT, Control BOX HI-LIMIT Replacement Letter Part Number Description General View Advantage SeriesPage Letter Description Control BOXPage GAS and Electric Oven BackPage Series ConveyorPage This page intentionally left blank This page intentionally left blank