Bunn T6A - Manual (Page 23)

Page 23
LIMIT THERMOSTAT
FIG. 13 LIMIT THERMOSTAT
P2207.40
Location:
The limit thermostat is located inside the hood on
the tank lid.
Test Procedure:
1. Disconnect the brewer from the power source and
remove the black wire from the limit thermostat.
2. With a voltmeter, check the voltage across the
black wire removed from the limit thermostat and
the white wire or red wire on the tank heater ter-
minal. Connect the brewer to the power source.
The indication must be:
a) 120 volts ac for two wire 120 volt models.
b) 240 volts ac for two wire 240 volt models.
c) 100 volts ac for two wire 100 volt models.
3. Disconnect the brewer to from the power source.
If voltage is present as described, reconnect the black
wire and proceed to #4.
If voltage is not present as described, refer to the
Wir-
ing Diagrams and check the wiring harness.
SERVICE (cont.)
10145 072600
4. Remove the blue/black wire from the limit ther-
mostat.
5. With a voltmeter, check the voltage across the ex-
posed terminal of the limit thermostat and the
white wire or red wire on the tank heater. Connect
the brewer to the power source. The indication
must be:
a) 120 volts ac for two wire 120 volt models.
b) 240 volts ac for two wire 240 volt models.
c) 100 volts ac for two wire 100 volt models.
6. Disconnect the brewer from the power source.
If voltage is present as described, reconnect the blue
wire to the limit thermostat. The limit thermostat is
operating properly.
If voltage is not present as described, replace the limit
thermostat.
Removal and Replacement
1. Remove both wires from the limit thermostat ter-
minals.
2. Carefully slide the limit thermostat out from un-
der the retaining clip.
3. Carefully slide the new limit thermostat into the
retaining clip.
4. Refer to Fig. 14 when reconnecting the wires.
BLU/BLK to
Control
Thermostat
BLK to Power Cord or
Power Connector
FIG. 14 LIMIT THERMOSTAT TERMINALS
P1800