Compressor - Bunn Nitron Cold Draft Service & Repair Manual

SERVICE (CONT.)

Compressor

FIG. 5 COMPRESSOR
Location:
The compressor is located at the top of the dispenser
frame.
FIG. 6 COMPRESSOR TERMINALS
Test Procedures:
Compressor: Refer to FIG. 6
1. Remove relay and thermal overload protector.
2. Use an Ohm meter, place one lead on the copper
tubing and the other on any of the three terminals
and set the meter to highest resistance setting.
If you get a resistance reading to ground, replace the
compressor.
FIG. 7 START RELAY TERMINALS
Compressor Start Relay: Refer to FIG. 7
1. Disconnect the dispenser from the power source.
2. Remove compressor terminal cover (1).
3. Install meter leads as shown and check for low
nominal resistance through the PTC relay.
If continuity is not present, replace the PTC relay.
P1684.40
Plugs into Relay
Thermal Overload Protector: Refer to FIG. 8
1. Disconnect the overload from the compressor and
at room temperature. Install meter leads across the
two spade terminals and check for continuity
2. The eter display should read 0.00 or hear an audible
tone.
If continuity is not present at room temperature, replace
the overload protector.
21
FIG. 8 THERMAL OVERLOAD
PROTECTOR TERMINALS
55124 021418