Bunn Ultra-1 Service & Repair Manual page 29

COMPRESSOR (AMERICOLD) (cont.)
Removal and Replacement:
Compressor Start Relay: Refer to FIG. 15
1. Remove the terminal cover retainer (5) and the terminal
cover (4)
2. Disconnect the wires from the compressor start relay.
3. Pull relay (1) off of the compressor pins and discard.
4. Push new relay onto the compressor pins.
5. Refer to Fig. 16 and reconnect the wires.
6. Reinstall terminal cover (4) and cover retainer (5).
Plug directly to two lower
terminals on Compressor
120V DISPENSERS
Plug directly to two lower
terminals on Compressor
230V DISPENSERS
FIG. 16 COMPRESSOR START RELAY
TERMINALS
Compressor Thermal Overload Protector: Refer to FIG. 15
1. Remove terminal cover retainer (5) and terminal cover (4).
2. Disconnect the WHI/ORN wire of the harness from the
thermal overload protector.
3. Disconnect the BLK wire from the Compressor's upper
terminal.
4. Remove overload protector retainer (3) and thermal
overload protector (2) as an assembly.
5. Remove retainer (3) from overload protector (2) and
discard overload protector.
SERVICE (continued)
White from Main Harness
Black from Run Capacitor
White from Main Harness
P1338
6. Install retainer (3) on new overload protector (2).
7. Install retainer (3) and overload protector (2) on the
compressor terminal bracket.
8. Refer to Fig. 17 and reconnect the thermal overload
protector wires.
9. Reinstall terminal cover (4) and cover retainer (5).
FIG. 17 THERMAL OVERLOAD PROTECTOR
Compressor Run Capacitor (230V Dispensers Only):
Refer to FIG. 15
1. Remove terminal cover retainer (5) and terminal cover (4).
2. Disconnect the run capacitor leads.
3. Remove the #6 crimptite screw securing the run
capacitor to the rear of the component bracket.
4. Remove run capacitor and discard.
5. Place new run capacitor on the rear of component bracket
and secure with #6 crimptite screw.
6. Refer to Fig. 18 and reconnect the wires.
FIG. 18 COMPRESSOR RUN CAPACITOR
29
WHI/ORN from
Main Harness
BLK to Compressor
TERMINALS
BLK to Start Relay T1
BLK to Start Relay T3
TERMINALS
P1816