Lincoln IMPINGER 1100, Service Manual

Page: 35 / 72

Impinger II –1100 Series Service Manual - Domestic 35
1
2
3
6
7
P 3
11
10
9
L 1 120 VAC
L 2
LOAD
RED
BLACK
WHITE
+
-
THERMOCOUPLE
TYPE J
TRANSFORMER
MARKED IN BLUE POTENTIOMETER
2.5 K OHM
1
3
6
7
10
L 1 120 VAC
L 2
LOAD
+
-
THERMOCOUPLE
TYPE J
4
5
RED
WHITE
BLACK P 3
13
12
TRANSFORMER
MARKED IN RED
THIS BOARD DISCONTINUED
AT S/N 2000932
POTENTIOMETER
2.5 K OHMS
TEMPERATURE CONTROL POTENTIOMETER, 0-2.5K OHMS, 1 TURN
1. Shut off power at main breaker.
2. Remove front control box cover.
3. Loosen and remove temperature control knob.
4. Remove hex nut and washer then remove pot from rear of compartment.
5. Remove and mark wiring for replacement.
6. Replace in reverse order.
7. Recalibrate the dial. (See "Temperature Control")
THERMOCOUPLE PROBE
The sensor bulb is located in the oven compartment behind the lower finger, and held
in position by a wire form holder.
CAUTION: ALLOW OVEN TO COOL
1. Shut off power.
2. Remove conveyor and lower finger.
3. Remove control compartment covers.
4. Remove sensor bulb from the wire form holder, pull thermocouple out of the oven through the access tube
and disconnect leads from terminals 6 and 7 of the temperature control board.
5. To install, push thermocouple bulb through the access tube and place in wire form
holder. Be sure that wire form holder is exerting enough pressure on the sensor
bulb to hold it in place. If sensor bulb is not held securely, replace the wire form holder or bend the holder
slightly to hold sensor bulb in place.
6. Reconnect RED lead to terminal 7(-) and WHITE lead to terminal 6(+).
7. Replace conveyor and fingers.