Bunn RT Manuel Du Propriétaire

Page 20

FIG. 14 WARMER SWITCHES

FIG. 15 WARMER SWITCH WIRING

RT: Left Rear, Left Front, Right Rear & Right Front

Location:

 

These warmer switches are the two at the left and 

the left most one on the right of the base as viewed 

from the front, FIG. 14. Their knobs are marked Off/

On/Off/On.

 

To test these switches, access will also be 

needed to the terminal block located in the rear of the 

brewer.

Test Procedure:

1.  Check the voltage across terminal L1 and the 

white or red wire on the terminal block 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.

 

c) 100 volts ac for two wire 100 volt models.

2.  Disconnect the brewer from the power source.

If voltage is present as described, proceed to #3.

If voltage is not present as described, refer to the Wir-

ing Diagrams and check the brewer wiring harness.

3.  Check the voltage across terminal 1 and the white 

or red wire on the terminal block with a voltmeter 

when the switch is in the “ON” position.  Connect 

the brewer to the power source.  The indication 

must be as described in step 1.  Voltage must not 

be present across these terminals in the “OFF” 

positions.

4.  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.  Remove the knob from the switch.

2.  Loosen the 5/8” nut on the switch shaft and push 

the switch through the opening.

3.  Remove the wires from the switch terminals.

4.  Refer to FIG. 15 when reconnecting the wires.

5.  Securely mount the new switch onto the housing 

and reinstall the knob.

MODEL

RT Left Rear 

BLK L1  to Warmer

 

BLK 1  to Left Front Warmer Switch

RT Left Front 

BLK L1  to Warmer

 

BLK 1  to Left Rear Warmer Switch

 

 

to Brew Station Warmer Switch

RT Right Front  BLK L1  to Warmer

 

BLK 1  to Terminal Block

 

 

to Brew Station Warmer Switch

 

 

to Right Rear Warmer Switch

RT Right Rear 

BLK L1  to Warmer

 

BLK 1  to Right Front Warmer Switch

L1

1

BLK (L1) (see below)

BLK (1) (see below)

P1688

P1695

32440 070700