Lincoln 1100-000-A SERIES (SN 2038615 & BELOW) Conveyor Control Potentiometer Replacement

. Remove fan shroud.

. Remove heating element(s) from oven back.

. Reassemble in reverse order and check system operation. Apply anti-seize compound to all mounting bolts on elements and back bolts.

NOTE: Be sure all wiring connections are tight. Loose connections at on the elements may cause the terminals to burn off and damage the elements or wiring.

CONVEYOR CONTROL POTENTIOMETER – REPLACEMENT

. Shut off power at main breaker.

. Remove control panel top and front cover.

. Loosen two allen screws and remove knob by sliding knob off of shaft.

. Remove mounting nut from potentiometer shaft and remove potentiometer.

. Disconnect potentiometer wires and mark for reassembly.

. Reassemble in reverse order and check system operation.

CONVEYOR CONTROL BOARD – REPLACEMENT

. Shut off power at main breaker.

. Remove control panel top and front cover.

. Disconnect wiring from conveyor control board and mark for reassembly.

. Remove conveyor control board from its mounting bracket.

. Reassemble in reverse order. Calibrate new conveyor control board and check system operation. NOTE: Be sure that jumper (on conveyor control) is set to the proper input voltage (120/240) position.

CONVEYOR CONTROL BOARD – CALIBRATION

. Connect digital voltmeter to the hall effect sensor. Black meter lead connected to black hall effect sensor lead, red meter lead to white hall effect sensor lead.

. Turn conveyor control knob fully counter clockwise. Loosen knob and align with calibration mark and tighten knob.

. Set conveyor control knob to the 1-minute setting. Adjust “MAX” pot on conveyor control to 327.5Hz.

. Set conveyor control knob to the 30-minute setting. Adjust “MIN” pot on conveyor control to 10.9 Hz. Recheck

at 1 minute and 30 minute settings until proper readings are achieved. Seal pots with glyptol or nail polish.

CIRCUIT BREAKER – REPLACEMENT

.	Shut off power at main breaker.
.	Remove control panel top and front cover.
.	Disconnect two wires from circuit breaker and mark for reassembly.
.	Remove mounting nut from circuit breaker and remove circuit breaker.
.	Reassemble in reverse order and check system operation.
	NOTE: Be sure to reset circuit breaker before operation.
CONVEYOR DRIVE MOTOR – REPLACEMENT
.	Shut off power at main breaker.
.	Remove control panel top and front cover.
.	Remove conveyor.
.	Disconnect wiring from motor and mark for reassembly.
.	Remove coupling from motor drive shaft.
.	Remove four mounting screws and remove conveyor motor and mounting bracket.
.	Remove mounting bracket from conveyor motor.
.	Reassemble in reverse order and check system operation.
REVERSING CONVEYOR DIRECTION
.	Shut off power at main breaker.
.	Remove control panel top and front cover.
.	Reverse wires fastened to terminals A+ and A- on conveyor control board. (See schematic diagram for wire
	numbers.)
.	Reassemble in reverse order and check system operation.
Impinger II – 1100-000-A Series (SN 2038615 & Below) Service Manual –Int’l		21