Bunn AFPO-2, Service And Repair Manual

15

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SERVICE (cont.)

REFILL SWITCHES

FIG. 14 REFILL SWITCHES

Location:

The refill switches are located on the upper right 

front of the autofill box. 

Test Procedures:

1.  Disconnect the dispenser from the power source.

2.  Disconnect    the  two  white/red,  brown/black  or 

red/black wires from the switch terminals.

3.  Connect the dispenser to the power source. Check 

for voltage across the white/red, brown/black or 

red black wires from the test/operate switch and 

the white wire on solenoid #2 or #3.  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 the dispenser from the power source.

If voltage is present as described, proceed to #5.

If voltage is not present as described, refer to the 

Wiring 

Diagrams

 and check dispenser wiring harness.

5.  Check for continuity across the switch terminals 

with  the  switch  in  the  “ON”  position.  Continuity 

must not be present when the switch is in the “OFF” 

position.

P1516

FIG. 15 REFILL SWITCH TERMINALS

P1522

If  continuity  is  present  as  described,  reconnect  the 

wires to the switch terminals.

If continuity is not present as described, replace the 

switch.

Removal and Replacement:

1.  Remove the wires from the switch terminals.

2.  Compress the clips inside the autofill box and gently 

push the switch through the opening in the front of 

autofill box.

3.  Push the new switch into the opening and spread 

the clips to hold switch in the autofill box.

4.  Refer to Fig. 15 when reconnecting the wires.

#1

AFPO-2 & 3

#2

AFPO-2 & 3

#3

AFPO-3 ONLY

RED/BLK from Test/

Operate Switch

RED/BLK to Vacuum

Switch #1

BRN/BLK from Test/

Operate Switch

BRN/BLK to Vacuum

Switch #2

WHI/RED from Test/

Operate Switch

WHI/RED to Vacuum

Switch #3

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