Lincoln Impinger X2 Ovens with Push Button Controls 3240-2 User Manual
Page 19
Impinger X2 – Analog Service Manual – Dom & Int’l
19
4.
Disconnect wiring from burner blower relay and mark all wiring for reassembly.
5.
Remove two mounting screws and remove burner blower relay.
6.
Reassemble in reverse order and check system operation.
BURNER CONTROL – REPLACEMENT
1.
Shut off power at main breaker.
2.
Remove control box cover
3.
Disconnect wiring from burner control and mark all wiring for reassembly.
4.
Remove mounting screws and remove burner control.
5.
Reassemble in reverse order and check system operation.
AIR PRESSURE SWITCH – REPLACEMENT
1.
Shut off power at main breaker.
2.
Remove control box cover and rear control box cover.
3.
Remove cover from air pressure switch. Disconnect wiring from air pressure switch and mark all
wiring for reassembly.
4.
Remove air switch tube from air pressure switch. Note location of air switch tube, tube must be
connected to the “HIGH” port of the air pressure switch.
5.
Remove mounting screws and remove air pressure switch.
6.
Reassemble in reverse order. Adjust air pressure switch for proper operation (see below) and
check system operation.
AIR PRESSURE SWITCH – ADJUSTMENT
1.
Start the oven. After the burner ignites, turn the air pressure switch adjustment screw Clockwise
until the burner shuts off .
2.
Turn the adjustment screw Counterclockwise until the burner ignites, plus one full turn.
3.
Seal adjustment screw with nail polish.
4.
Replace cover on air pressure switch.
ELECTRONIC TEMPERATURE CONTROL – REPLACEMENT
1.
Shut off power at main breaker.
2.
Remove control box cover.
3.
Disconnect wiring from electronic temperature control and mark all wiring for reassembly.
4.
Locate and remove mounting screw at the bottom center of the electronic temperature control.
Remove control from control base.
5.
Remove two mounting screws from control base and remove control base from oven.
6.
Reassemble in reverse order and check calibration of new control (see below) and check system
operation.
ELECTRONIC TEMPERATURE CONTROL – CALIBRATION
1.
Turn burner switch off.
2.
Remove electronic temperature control from the mounting base by removing one retaining screw
at the bottom of the electronic temperature control. Pull electronic temperature control from it’s
mounting base.
3.
Locate Hairpin switch on the control and open the Hairpin switch. (See photo, next page)
Replace control in the mounting base.
4.
Turn the burner switch on. If the display reads “CAL”, press the “UP” arrow until the display reads
“Cnf” on the SV (orange) display.
5.
Press the FUNC key until the display reads “P13” in the SV (orange) portion of the display. Using
the “UP” or “DOWN” arrows, adjust the “PV” (yellow) portion of the display to read 500. This is the
offset point.
6.
Press the FUNC key until the display reads “P14” in the SV (orange) portion of the display. Using
the “UP” or “DOWN” arrows, adjust the “PV” (yellow) portion of the display to read –50. This is the
“offset value”. (continued next page)