On/Off Switch - Bunn VP17 Operating & Service Manual

SERVICE (cont.)
ON/OFF WARMER SWITCH
FIG. 6 ON/OFF WARMER SWITCHES
Location:
The ON/OFF warmer switch(es) are located on the
front of the hood.
Test Procedure:
1. Disconnect the brewer from the power source.
2. Viewing the switch from the back, remove the
white wire from the upper terminal and the black
wire from the center terminal.
3. With a voltmeter, check the voltage across the
white wire and the black wire. Connect the brewer
to the power source. The indication must be:
a) 100 volts ac for two wire 100 volt models.
b) 120 volts ac for two wire 120 volt models.
4. Disconnect the brewer from the power source.
If voltage is present as described, reconnect the white
wire and proceed to #5.
ONE LOWER WARMER
TWO WARMERS
THREE WARMERS
P1166.40
Page 12
If voltage is not present as described, refer to the Wiring
Diagrams and check the brewer wiring harness.
5. With the black wire removed, remove the wire from
the lower terminal.
6. Check for continuity across the center and lower
terminal with the switch in the "ON" (upper) posi-
tion. Continuity must not be present when the
switch is in the "OFF" (lower) position.
If continuity is present as described, reconnect the
black wire to the center terminal and the remaining
wire to the lower terminal.
If continuity is not present as described, replace the
switch.
Removal and Replacement:
1. Remove the wires from the switch terminals.
2. Remove front end cap.
3. Compress the clips inside the hood and gently
push the switch through the opening.
4. Push the new switch into the opening and spread
the clips to hold switch in the hood.
5. Reinstall front end cap.
6. Refer to Fig. 7 when reconnecting the wires.
Connect wire to Terminal #1 as follows:
Lower Warmer ..................................................... WHI/RED
One Upper Warmer (Rear) ............................................ VIO
Two Upper or Side Warmers
(Front) ...................................................................BRN/BLK
(Rear) ............................................................................ VIO
FIG. 7 ON/OFF SWITCH TERMINALS
WHI to Lower Warmer
BLK to Terminal Block
or Tank Heater Switch
Terminal #1 (See Chart
Below)
P1918
10860 061501