Bunn SINGLE - Service - On;Off Switch (Warmer)

Page 31
ON/OFF SWITCH (Warmer)
1
2
3
4
5
.5
M
INUTES
BUNN-O-MAT
IC
P/N 2
62
0- 120
VAC
START
ON
/ WARMER
SELECTOR
READY
P820
Location:
The ON/OFF switch is located on the front of the
hood in the center to the right of the start switch.
Test Procedure:
1. Disconnect the brewer from the power source.
2. Viewing the switch from the back remove the
white wire from the upper right 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.) 120 volts ac for two wire 120 volt models, three
wire 120/208 volt models and three wire 120/240
volt models.
b.) 200 to 240 volts ac for two wire 200 or 240
volt models.
4. Disconnect the brewer from the power source.
If voltage is present as described, reconnect the white
wire, and proceed to #5.
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 white/
violet wire on the switch from the lower left termi-
nal.
6. Check for continuity across the center and lower
P843
SERVICE (cont.)
27038 030901
left terminal with switch in the "ON" position.
Continuity must not be present when switch is in
the "OFF" position.
If continuity is present as described, reconnect the
black wire to the center terminal and the white/violet
wire on the switch to the lower left terminal.
If continuity is not present as described, replace the
switch.
Removal and Installation:
1. Remove the wires from the switch terminals.
2. Compress the clips inside the hood and gently
push the switch through the opening.
3. Push the new switch into the opening and spread
the clips to hold switch in the hood.
4. Refer to Fig. 19 when reconnecting the wires.
FIG. 18 ON/OFF SWITCH
FIG. 19 ON/OFF SWITCH TERMINALS
WHI to Terminal
Block (White Insert
on 120/V,120/208V or
120/240V Models)
RED to Red Terminal
Block (Red Insert on
200V-240V Models)
BLk to Terminal
Block (Black Insert)
WHI/VIO to Timer TL1
(Electro/Mechanical)
or WHI/RED (Elec-
tronic)