Bunn RT Manuel Du Propriétaire

Page 14

FIG. 2 BREW TIMER

FIG. 3 BREW TIMER WIRING

Location:

 

The brew timer is located behind the front panel 

to the right of the tank, FIG. 2.

Test Procedure:

1.  Disconnect the brewer from the power source 

and separate the polarized, three-pin connectors 

between the timer and brewer wiring harness 

and rotate the brew timer dial fully counterclock-

wise.

2.  Check the voltage across sockets 2 & 3 (white 

or red and black wires) of the female connector 

with a voltmeter when the On/Off brew station 

warmer switch is in the upper position.  Connect 

the brewer to the power source.  The indication 

must: a) 120 volts ac for two wire 120 volt mod-

els.

 

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.

3.  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 sockets 1 & 2 (blue 

and white or red wires) of the female connector 

with a voltmeter when the On/Off brew station 

warmer switch is in the upper position and the 

start switch is pressed to the lower position and 

held.  Connect the brewer to the power source.  

The indication must be as described in step 2, 

until the start switch is released.

5.  Disconnect the brewer from the power source.

If voltage is present as described, reconnect the polar-

ized, three-pin connectors, and proceed to #6.

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

ing Diagrams and check the brewer wiring harness.

6.  Disconnect the in-line connectors on the black 

and white wires from the timer to the solenoid.

7.  Check the voltage across the black and white 

wires with a voltmeter when the On/Off brew sta-

tion warmer switch is in the upper position and 

the start switch is pressed to the lower position 

and released.  Connect the brewer to the power 

source.  The indication must be as described in 

step 2, for approximately 20 seconds and then 

return to its previous indication.

8.  Disconnect the brewer from the power source.

If voltage is present as described, the brew timer is 

operating properly.  Reset the timer dial as required, 

to obtain the desired brew volume.

If voltage is not present as described, replace the 

brew timer.

Removal and Replacement:

1.  Separate all connectors between the brewer wir-

ing harness and the timer.

2.  Remove the two 8-32 slotted-head screws hold-

ing the timer to the bracket.

3.  Install the new timer to the bracket.

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

5.  Readjust the timer dial as required.

P1 BLU to Start Switch

P2 WHI (see below)

P3 BLK to ON/OFF Brew Station 

Warmer Switch

WHI to Solenoid Coil

BLK to Solenoid Coil

MODEL
OT 

WHI 

to Indicator Lamp

RT 

WHI 

to Brew Station Warmer

P1690

P1691

32440 070700