Bunn OT - Page 25

SERVICE (cant .)
Warmer Switchles)
0
.’
-.
0
OT On/Ofi B&w Station & Upper
RT: On/Off Brew Station
FIG. 11 WARMER SWITCHES
P1687
P1666
FIG. 12 WARMER SWITCHES
Location:
These switches are located beneath and to the
left of their associated warmers as viewed from the
front, FIG.s II and 12.
Test Procedure:
1.
Locate the switch terminal with black wires that
2.
do not go to the nearby indicator lamp.
Check the voltage across this terminal and the
terminal on the Indicator lamp with white or red
wires with a voltmeter. Connect the brewer to
the power source. The indication must be:
a) 120 volts ac for two wire 120 volt models.
b) 200 or 240 volts ac for two wire 200 volt or
240 volt models and three wire 120/240 volt
models.
3.
c) 100 volts ac for two wire 100 volt models.
Disconnect the brewer from the power source.
If voltage is present as described, proceed to #4.
If voltage is not present as described, refer to the Wir
ing Diagrams and check the brewer wiring harness.
4. Check the voltage across the other switch termi,
nal and the terminal on the indicator lamp with
white or red wires with a voltmeter when the
switch is in the upper position. Connect tht
brewer to the power source. The indication mus
be as described in step 2. Voltage must not bf
present across these terminals in the lower posia
tion.
5. Disconnect the brewer from the power source.
If voltage is
ating
P
resent as described the switch is oper
proper y.
If voltage is not present as described, replace thf
switch.
Removal and ReDlacement:
1. Compress the clips inside the housing and gen.
2.
tly push the switch through the o
Remove the wires from the switc
f:
ening.
terminals.
3.
4.
Refer to FIG. 13 when reconnecting the wires.
Push the new switch firmly into the opening.
BLK (A) (see below)
BLK (B) (see below)
PI697
- FIG. 13 WARMER SWITCH WIRING -
MODEL
OT Upper
BLK A
to Warmer
to Indicator Lamp
BLK B
to Harness P3
OT On/Off Brew Station
BLK A
to Indicator Lamp
to Brew Station Warmer
to Timer P3
BLK B
to Terminal Block
RT On/Off Brew Station
BLK A
to Indicator Lamp
to Timer P3
to Brew Station Warmer
BLK B
to Left Front Warmer Switch
to Right Front Warmer Switch
Page 17
Part I