Lincoln Impinger Conveyor Ovens 1633-000-EA User Manual
Page 13
Low Profile –1600 Series Advantage Digital Service Manual -–Int’l
13
CAPACITOR, CONVEYOR MOTOR – REPLACEMENT
A.
Shut off power at main breaker.
B.
Remove control box cover and front panel.
C.
Discharge capacitor before removing wires. Mark wires for reassembly.
D.
Remove mounting screw and remove capacitor.
E.
Reassemble in reverse order.
REVERSING SWITCH – REPLACEMENT
A.
Shut off power at main breaker.
B.
Disconnect wiring from reversing switch and mark for reassembly.
C.
Remove mounting nut and remove reversing switch.
D.
Reassemble in reverse order and check system operation.
REVERSING CONVEYOR DIRECTION
A.
Shut off power at oven switch.
B.
Set reversing switch in the other position.
C.
Turn oven “on” and check for proper operation.
FUSEHOLDER – REPLACEMENT
A.
Remove appropriate control box cover.
B.
Remove 2 wires, note wire number and location.
C.
Remove locknut on backside of fuse holder and push out.
D.
Reinstall in reverse order and check system operation.
GAS VALVE – REPLACEMENT AND ADJUSTMENT (S/N L31478 and Below)
A.
Remove appropriate control box cover.
B.
Disconnect the gas piping from the back of the unit.
C.
Remove the 4 screws from the incoming nipple mounting bracket.
D.
Remove incoming nipple.
E.
Disconnect 2 plugs (1) 3prong and (1) 4 prong – note location.
F.
Disconnect pipe union just above gas valve and remove assembly.
G. Reassemble in reverse order (check all pipe fittings for leaks). After assembled check for proper
adjustment of gas pressure switch, 10on dial for natural gas, 27 for LP gas, and 4.5 for town gas.
H.
Check and adjust manifold pressure. Remove pressure tap located in gas piping above the gas valve
prior to the burner orifice and install manometer. Adjustment screw is located on the front of the
valve, remove plastic cap and adjust as needed: 3.5” W.C. for natural gas, 10” W.C. for LP and 2.0”
W.C. for town gas.
I.
Check gas filter by removing cover plate (located on either side of valve). Remove 4 screws and
slide filter out of valve housing and inspect. Reassemble in reverse order and check for leaks around
cover.
GAS VALVE – REPLACEMENT (S/N L32479 and Above)
A.
Remove appropriate control box cover.
B.
Disconnect the gas piping from the back of the unit.
C.
Remove the 4 screws from the incoming nipple mounting bracket.
D.
Remove incoming nipple.
E.
Remove wiring from ignition control (mounted on gas valve) mark all wiring for reassembly.
F.
Remove pilot tube. Disconnect pipe union in gas line and remove gas valve and piping assembly.
G. Remove piping from gas valve. Reassemble in reverse order and check system operation.
H.
Check all gas line fittings for leaks.
I.
Adjust the gas manifold pressure on the gas valve. Refer to the specification plate on the oven for
proper rating.