Lincoln Impinger X2 Ovens with Push Button Controls 3240-2 User Manual
Page 20
Impinger X2 – Analog Service Manual – Dom & Int’l
20
7.
Press the “FUNC” key until the display reads “Cnf”. Shut off burner, remove control from the
mounting base. Close the Hairpin switch on the control and replace the control in the mounting
base.
8.
Turn the burner on. Set oven temperature to 500
°F and verify calibration. Allow oven to preheat
for at least 30 minutes. Place temperature probe in the center of the oven, on the top conveyor.
If the actual temperature differs from the displayed temperature more than 5
°, the “offset value”
must be adjusted (steps 2 through 7), until the proper temperature is indicated on the display.
9.
Reassemble in reverse order and check system operation.
THERMOCOUPLE – REPLACEMENT
1.
Shut off power at main breaker.
2.
Remove control box cover.
3.
Disconnect thermocouple from electronic temperature control. Note wire colors for reassembly.
4.
Remove oven back assy. Remove thermocouple from mounting flange in blower housing. Remove
thermocouple from oven.
5.
Reassemble in reverse order and check system operation.
THERMOSTAT, HI-LIMIT – REPLACEMENT
1.
Shut off power at main breaker.
2.
Remove control box cover.
3.
Disconnect all wiring from hi-limit thermostat and mark all wiring for reassembly.
4.
Remove oven back assy. Remove capillary tube from mounting bracket.
5.
Remove mounting nut and remove hi-limit thermostat from oven.
6.
Reassemble in reverse order and check system operation.
7.
NOTE: Depress reset button to insure thermostat is set for operation.
TEMPERATURE REGULATION VALVE – REPLACEMENT
1.
Shut off power at main breaker.
2.
Shut off the gas supply to the oven and disconnect the flexible gas hose from the oven.
3.
Remove control box cover.
4.
Disconnect all wiring from the temperature regulation valve and the main gas valve. Mark all wiring for
reassembly.
5.
Remove pilot tube from gas valve. Disconnect pipe union at the burner and at the inlet side of the main
gas valve. Loosen pipe clamp and remove valves and piping assembly.
6.
Remove piping from old valve and reassemble in reverse order.
7.
Check all gas line fittings for leaks and check system operation.
GAS VALVE – REPLACEMENT
1.
Shut off power at main breaker.
2.
Shut off the gas supply to the oven and disconnect the flexible gas hose from the oven.
3.
Remove control box cover.
HAIRPIN SWITCH