Lincoln Impinger Conveyor Ovens 1634-000-EA - Manual (Page 15)

Low Profile – 1600 Advantage Series Service Manual – International 15
E. Remove assembly and replace main orifice.
F. Reassemble in reverse order and check system operation.
NOTE: Check all gas line fittings for leaks.
TEMPERATURE CONTROL POTENTIOMETER – REPLACEMENT
A. Remove control box cover.
B. Loosen screw and slide knob off potentiometer shaft.
C. Remove lock nut and push out.
D. Remove 3 wires from electronic temperature control, note wire color and location for
reinstallation.
E. Reassemble in reverse order and check system operation.
THERMOSTAT, HIGH LIMIT, OVEN CAVITY – REPLACEMENT
A. Remove appropriate control box cover. Remove motor cover and remove oven back to
access high limit thermostat.
B. Remove wires from thermostat, note wire numbers for reinstallation.
C. Remove mounting nut from high limit thermostat and remove high limit from oven.
D. Reassemble in reverse order. Check system operation.
ON-OFF SWITCH – REPLACEMENT
A. Remove control box cover.
B. Depress spring clips on side of switch and push out.
C. Remove wires from back of switch, note wire number and location.
D. Reassemble in reverse order and check system operation.
NOTE: Make sure switch housing is fully seated in control box housing.
DUAL TEMPERATURE DISPLAY – REPLACEMENT
A. Shut off power at main breaker.
B. Remove control panel top and front cover.
C. Remove all wires from temperature display and mark wires for reassembly.
D. Pry temperature display to remove from mounting tabs (this is a pressure fit
E. Reassemble in reverse order.
CALIBRATE TEMPERATURE
A. (see page 16 for connection of temperature sensor ) Set temp. control to 500
° F .
Allow temperature to stabilize.
B. “ Fine tune “ temperature setting to achieve measured temperature swings from 497 ° F to
503 ° F. When actual temperature falls between 497 ° F and 503 ° F, the display must show
500 ° F.
C. Adjust temp. adj. Pot. on temp display to achieve a display reading of 500 ° F.
TRANSFORMER, TEMPERATURE DISPLAY – REPLACEMENT
A. Remove control box cover and front panel.
B. Remove 5 wires (2 primary side, 3 secondary side ), note color and location of wires for
reinstallation.
C. Remove 2 screws from transformer base and replace assembly.
D. Reassemble in reverse order and check system operation.