Service manual

Page 32
SERVICE (cont.)
Location:
The transformers are located in the brewer base on
the right center of the base plate.
Test Procedures:
1. Disconnect the brewer from the power source.
2. Disconnect the black wire from terminal #1 (from
the START switch) and the white or red wire from
terminal # 6.
3. With a voltmeter check the voltage across the
black and white wire. Connect the brewer to the
power supply. The indication must be 120 volts ac
for three wire 120/208 volt models and three wire
120/240 volt models.
4. Disconnect the brewer from the power supply.
If voltage is present as described reconnect the wires
and proceed to #5.
If voltage is not present as described, refer to the
wiring diagrams and check the brewer wiring harness.
TRANSFORMERS
P2232
FIG. 35 TRANSFORMERS
32248 100500
5. Disconnect the blue/black wires from terminals #7
and #12 on the transformer.
6. With a voltmeter check the voltage across the blue/
black wires. Connect the brewer to the power
source. The indication must be 24 volts ac.
If voltage is present as described the transformer is
operating properly.
If voltage is not present as described, replace the
transformer.
Removal and Replacement:
1. Disconnect all the wires from the transformer that
is to be replaced.
2. Remove the two #6-32 screws and the two #6-32
keps nuts securing the transformer to the brewer
base plate.
3. Remove transformer and discard.
4. Install new transformer on the brewer base plate
securing with two #6-32 screws and two #6-32
keps nuts.
5. Refer to Fig. 36 to reconnect the wires.