Bunn OL Owner's Manual

Page 15

FIG. 7 WARMER SWITCHES

FIG. 8 WARMER SWITCHES

FIG. 9 WARMER SWITCH WIRING

 

OL:

 On/Off Brew Station & Upper

 

RL:

 On/Off Brew Station

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 ter-

minal  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 operat-

ing properly.

If  voltage  is  not  present  as  described,  replace  the 

switch.

Removal and Replacement:

1.  Compress the clips inside the housing and gently 

push the switch through the opening.

2.  Remove the wires from the switch terminals.

3.  Refer to FIG. 9 when reconnecting the wires.

4.  Push the new switch firmly into the opening.

Location:

 

These switches are located beneath and to the 

left of their associated warmers as viewed from the 

front, FIG.s 7 and 8.

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.

MODEL

OL Upper

BLK A  to Warmer

 

 

to Indicator Lamp

BLK B  to Harness P3

OL On/Off Brew Station

BLK A  to Indicator Lamp

 

 

to Brew Station Warmer

 

 

to Level Switch

BLK B  to Terminal Block

RL On/Off Brew Station

BLK A  to Indicator Lamp

 

 

to Level Switch

 

 

to Brew Station Warmer

BLK B  to Left Front Warmer Switch

 

 

to Right Front Warmer Switch

P1712

P1713

P1697

32430 121699