Bunn SRU User Guide
Page 14
SERVICE (cont.)
CIRCUIT BREAKER (120/208V and 120/240V Three
Wire Models)
Location:
The circuit breaker is located on the rear of the
urn, behind the rear utility cover.
Test Procedures:
1. Disconnect the brewer from the power source.
. Disconnect the black wire from the main harness
from the circuit breaker and the white wire on the
pump assembly. With a voltmeter, check the voltage
across the black wire and the white wire. Connect
the brewer to the power source. The indication
must be 10 volts for 10/08 and 10/40 volt,
3-wire with ground, single phase.
3. Disconnect the brewer from the power source.
If voltage is present as described, reconnect the white
wire to the pump assembly and proceed to #4. If volt-
age is not present as described, refer to the Wiring
Diagrams and check the brewer wiring harness.
4. With the black wire removed, remove the other
black wire from the circuit breaker.
5. Check for continuity across the terminals on the
circuit breaker.
P115.30
FIG. CIRCUIT BREAKER
BLK from Main
Harness
BLK from ON/
OFF Switch
FIG. 3 CIRCUIT BREAKER TERMINALS
P173
10067 040100
If continuity is not present as described, press the reset
button and repeat step 5, if continuity is not present
as described, replace the circuit breaker.
Removal and Replacement:
1. Remove wires from the circuit breaker.
. Remove the nut securing the circuit breaker to the
component bracket.
3. Remove circuit breaker and discard.
4. Install new circuit breaker on component bracket
and secure with nut.
5. Refer to Fig. 3 and reconnect the wires.