Installation manual

FAN DELAY & DEFROST TERMINATION-PULSE SENSORS
Electro-Mechanical System Control
58 MAINTENANCE & REPAIR
FAN DELAY: FIG 1
1. Disconnect power supply from cabinet.
2. Turn two (2) quarter turn fasteners located at each
end of the evaporator drain pan.
3. Remove the thermodisc and contact bracket from
the coil. Remove two (2) screws that hold the delay
to the bracket.
4. Disconnect the delay at the wiring bundle.
5. Replace with correct part in reverse order
Evap. Fan Delay: Close 32° / Open 52°
DEFROST TERMINATION CONTROL: FIG. 2
1. CAUTION: Disconnect the power supply from
the cabinet.
2. Turn two (2) quarter turn fasteners located at each
end of the evaporator drain pan.
3. Remove the thermodisc retainer clip.
4. Cut the wire ties that hold the wire to the
copper tubing.
5. Remove the thermodisc and contact bracket to
access the wiring bundle.
6. Install with the correct part. Retie at the wiring
bundle and resecure the disc to the suction line.
Defrost Termination: Close 30° / Open 60°
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SENSOR HARNESS
1. Disconnect power supply from cabinet.
2. Cut plastic wire ties securing the insulation on
the #2 sensor and note the sensor position.
3. Note the position of the #1 sensor and cut the
remaining plastic wire ties.
4. Unplug the harness from the back wall of the
cabinet and remove the harness.
5. Replace with the new harness making sure
the plug is fully engaged in the receptacle at
the back of the cabinet and the sensors are
mounted in the same locations and positions
as the previous harness.
6. Bundle the excess wires and tie them
securely in place.
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