Bunn RT Manuel Du Propriétaire

Page de 35
Page 14
FIG. 2 BREW TIMER
FIG. 3 BREW TIMER WIRING
SERVICE (cont.)
Brew Timer (Early Models)
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