Warmer Switch(Es) Ol; Ol: On/Off Brew Station & Upper; Rl: On/Off Brew Station - Bunn OL Operating & Service Manual

SERVICE (cont.)
Warmer Switch(es)
OL:
On/Off Brew Station & Upper
RL:
On/Off Brew Station
FIG. 9 WARMER SWITCHES
FIG. 10 WARMER SWITCHES
Location:
These switches are located beneath and to the
left of their associated warmers as viewed from the
front, FIG.s 9 and 10.
Test Procedure:
1. Locate the switch terminal with black wires that
do not go to the nearby indicator lamp.
2. 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 and
three wire 120/240 volt models.
b) 200 or 240 volts ac for two wire 200 volt or
240 volt models.
c) 100 volts ac for two wire 100 volt models.
3. Disconnect the brewer from the power source.
P1712
IN G
R N
W A ER
RM
! AT WA R DR Y
HE H NTE
HIG DE CA AW AY
T BO IL LES KS
NO US TIB LY RIS
DO CO MB MP UID
EP TO CO T LIQ
KE RE RE /HO ZA RD
FA ILU S FA ILU E HA
AS D FIR
GL S AN
RN
BU
P1713
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 the
brewer to the power source. The indication must
be as described in step 2. Voltage must not be
present across these terminals in the lower posi-
tion.
5. Disconnect the brewer from the power source.
If voltage is present as described the switch is oper-
ating properly.
If voltage is not present as described, replace the
switch.
Removal and Replacement:
1. Compress the clips inside the housing and gen-
tly push the switch through the opening.
2. Remove the wires from the switch terminals.
3. Refer to FIG. 11 when reconnecting the wires.
4. Push the new switch firmly into the opening.
FIG. 11 WARMER SWITCH WIRING
MODEL
OL Upper BLK A
BLK B
OL On/Off Brew Station
BLK A
BLK B
RL On/Off Brew Station
BLK A
BLK B
Page 16
BLK (A) (see below)
BLK (B) (see below)
to Warmer
to Indicator Lamp
to Harness P3
to Indicator Lamp
to Brew Station Warmer
to Level Switch
to Terminal Block
to Indicator Lamp
to Level Switch
to Brew Station Warmer
to Left Front Warmer Switch
to Right Front Warmer Switch
10020 111598
P1697