Lincoln 1100 Series Service Manual page 38

HOT SURFACE IGNITER
1. Shut off the electrical power at main breaker.
2. Shut off the gas supply in the main line to the oven.
3. Remove conveyor.
4. Remove rear control compartment cover.
5. Remove Conveyor Motor.
6. Remove electrical plug from the burner cap.
7. Loosen the pipe union in the gas line.
8. Remove 3 screws holding burner cap to burner tube.
9. Pull out on burner cap removing cap and burner venturi.
10. The hot surface igniter is held in place on the burner venturi by a screw, loosen
screw and remove igniter.
11. Replace in reverse order.
NOTE: Care must be used when handling the hot surface igniter as they are quite fragile and may be easily
broken if dropped or bumped.
ORIFICE, MAIN BURNER
1. Shut off power at main breaker.
2. Shut off gas at main line to the oven.
3. Remove conveyor.
4. Remove control compartment covers.
5. Loosen 4 nuts holding manifold to burner cap.
6. Loosen pipe union. Remove valve and manifold.
7. Remove main orifice
8. Reassemble in reverse order.
ORIFICE, BYPASS
1. Loosen flare nut and remove bypass orifice.
2. Reassemble in reverse order.
THERMOSTAT, HIGH LIMIT, OVEN CAVITY
1. Shut off power at main breaker.
2. Remove conveyor.
3. Remove control compartment covers.
4. Remove screws from bracket.
5. Remove the mounting nut from the threaded shaft.
6. Remove the capillary tube bulb from the wire holder in the oven heating chamber.
NOTE: Access to the capillary tube bulb is through the front door, after removing the conveyor and fingers.
7. Insert the new capillary tube bulb through the tube into the oven cavity and into the wire form holder
NOTE: The wire form must hold the bulb firmly. If it does not, compress the wire form slightly to increase the
pressure.
8. Reassemble in reverse order.
9. Push the reset button. Test system for proper operation.
THERMOSTAT, HIGH LIMIT
1. Shut off power at main breaker.
2. Remove conveyor.
3. Remove control compartment covers.
4. Remove 2 screws from holding bracket located in upper rear of the control compartment.
5. Remove the 2 leads and remove thermostat.
NOTE: Push reset button
6. Insure that aluminum probe and teflon washer are in place (if applicable), then reassemble in reverse order.
7. Insure that thermostat is in firm contact with the aluminum probe (if applicable).
38 Impinger II –1100 Series Service Manual - Domestic