Bunn CWT -DV - Manual (Page 21)

Page 21
TANK HEATERS
Location:
The tank heaters are located inside the tank and
secured to the tank lid.
Test Procedures:
With Voltage selector switch set to 120V:
1. Disconnect the brewer from the power supply.
2. With a voltmeter, check the tank heater voltage
across the white wire from the terminal block and
black wire from the tank heater. Connect the
brewer to the power source. The indication must
be 120V ac.
If voltage is present as described, proceed to #3
If voltage is not present as described, refer to the
Wiring Diagrams and check wiring harness.
With Voltage selector switch set 208-240V:
1. Disconnect the brewer from the power source.
2. Check voltage across the red wire from the termi-
nal block and black wire from the tank heater.
Connect the brewer to the power source. The
indication must be 208/240 volts ac.
5. 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
SERVICE (cont.)
FIG. 12 TANK HEATERS