Timer(Early Models) - Bunn CW-APS Operating & Service Manual

SERVICE (cont.)

TIMER(Early Models)

FIG. 16 TIMER
Location:
The timer is located inside the front of the trunk
on the top of component bracket.
Test Procedure.
1. Disconnect the brewer from the power source.
2. Disconnect the polarized, three pin connector from
the brewer wiring harness and rotate the brew
timer dial fully counterclockwise.
3. With a voltmeter, check the voltage across sockets
P2 & P3 (white and black wires) of the female
connector when the "ON/OFF" is in the "ON" (upper)
position. 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 to 240 volts ac on two wire 200 volt or 240
volt models.
c) 100 volts ac for two wire 100 volt models.
4. Disconnect the brewer from the power source.
If voltage is present as described, proceed to #5.
If voltage is not present as described, refer to the
Wiring Diagrams and check the brewer wiring har-
ness.
5. With a voltmeter, check the voltage across the
sockets P1 & P2 (blue and white wires) of the
female connector when the "ON/OFF" switch is in
the "ON" (upper) position and the "START" switch
is pressed. 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 to 240 volts ac for two wire 200 volt or 240
volt models.
c) 100 volts ac for two wire 100 volt models.
6. Disconnect the brewer from the power source.
P1127.40
7. Reconnect the three pin connector from main
wiring harness to the timer.
If voltage is present as described, proceed to #7
If voltage is not present as described, refer to Wiring
Diagrams and check the brewer wiring harness.
7. Disconnect the black and white wires to the sole-
noid.
9. With a voltmeter, check the voltage across the
black and white wires when the "ON/OFF" switch is
in the "ON" (upper) position and the "START"
switch is pressed to the "START" (lower) position
and released. Connect the brewer to the power
source. The indication must be:
a) 120 volts ac for approximately 20 seconds for
two wire 120 volt models and three wire 120/240
volt models.
b) 200 to 240 volts ac for approximately 20 sec-
onds for two wire 200 volt or 240 volt models.
c) 100 volts ac for approximately 20 seconds for
two wire 100 volt models.
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