Bunn JDF-4SB manual SERVICE CONT Compressor Cont, Blu/Blk, BLU from Capacitor, BRN from Capacitor

SERVICE (CONT.)

Compressor (Cont.)

Removal and Replacement:

Compressor Start Relay: Refer to FIG. 16

1.Remove the terminal cover (4)

2.Disconnect the wires from the compressor start relay.

3.Pull relay (1) off of the compressor pins and dis- card.

4.Push new relay onto the compressor pins.

5.Refer to Fig. 16 and reconnect the wires.

6.Reinstall terminal cover (4).

Compressor Thermal Overload Protector: Refer to FIG. 16

1.Remove 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 (3) and start relay as an assembly.

5.Remove overload protector (3) and discard overload protector.

6.Install new overload protector (3) on to the relay

(1).

7.Install relay (1) 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).

Compressor Assy:

NOTE: Before removal of any refrigeration component the refrigerant in the system must be reclaimed by a licensed refrigeration repair person.

NOTE: When replacing the compressor it is recom- mended that the dryer also be replaced.

1.Disconnect the tubes from the condenser and the accumulator.

2.Disconnect the compressor wiring harness from the dispenser main wiring harness.

3.Remove the four .25-20 keps nuts and washers securing the compressor to the chassis. Set nuts and washers aside for reassembly.

BLU/BLK

GRN

WHI

BLU from Capacitor

BRN from Capacitor

FIG. 17 RELAY TERMINALS

Plugs into Relay

FIG. 18 THERMAL OVERLOAD PROTECTOR

TERMINALS

4.Disconnect and remove the transformer.

5.From the right side of the dispenser lift the com- pressor assembly over the four studs in the chassis and remove compressor.

6.Install new compressor over the four studs in the dispenser chassis with the fill valve to the right side of the dispenser.

7.Secure compressor to the dispenser chassis using four .25-20 keps nuts and washers.

8.Reconnect tubes from the condenser and the ac- cumulator to the compressor.

9.Reinstall transformer.

10.Evacuate the system.

11.Recharge 120V and 230V system with:

JDF-4SB - 10 oz. Type R134A refrigerant. Design Pressures: High 335 - Low 88 psi

NOTE: The charging of the system must be done by a licensed refrigeration repair person.

NOTE: Refer to Wiring Diagrams when reconnecting wires to Compressor, Thermal Overload Protector and Start Relay.

22 49179 110613