Bunn AFPO-3 Manual De Usuario

19

FIG. 22 VACUUM/SUPPLY PUMP ASSEMBLY

P1521

Location:

The vacuum/supply pumps are located inside the

autofill box.

Test Procedure:
1. Disconnect the dispenser from the power source.
2. Disconnect the white wire from the pump lead and

the yellow, orange or red wire from the other lead.

3. Connect the dispenser to the power source. With

a  voltmeter,  check  the  voltage  across  the  white
wire  and  yellow,  orange  or  red  wire.  Push  the
pump (flavor) switch for the pump to be tested.
The indication must be :

a) 120 volts ac for two wire 120 volt models.
b) 200 to 240 volts ac for two wire 200 or 240 volt
models.
c) 230 volts ac for two wire 230 volt models.

4. Disconnect dispenser from the power source.

If voltage is present as described, replace the pump.
If  voltage  is  not  present  as  described,  refer  to  the
Wiring Diagrams and check main wiring harness.

Pump Motor Removal and Replacement:
NOTE: Do not disconnect or damage tubing. Tubing is

not replaced when pump is replaced.

1. Disconnect the pump motor leads.
2. Remove the four thumb screws securing the pump

head to the pump body.

3. Remove  the  two  #8-32  keps  nuts  securing  the

pump motor/bracket assembly to the refill unit.

4. Remove the two #6-32 screws securing the pump

motor to its mounting bracket.

5. Reattach this bracket to the new motor, and rein-

stall the assembly in the refill unit.

6. Reattach the pump head to the rear of the pump

motor with the four thumbscrews.

7. Reconnect the pump motor leads. Refer to Fig. 23

to reconnect the wires.

Pump Removal and Replacement:
NOTE: Do not disconnect or damage tubing. Tubing is

not replaced when pump is replaced.

1. Remove the four thumb screws securing the pump

head to the pump body.

WHI from Solenoid #2
YEL from Pump Switch #1

WHI from Pump #1
ORN from Pump Switch #2

WHI from Solenoid #3
RED from Pump Switch #3

FIG. 23 VACUUM/SUPPLY PUMP TERMINALS

P1526

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