Bunn RL00006929 service manual Service Limit Thermostat

SERVICE (cont.)

Limit Thermostat

P1715

FIG. 18 LIMIT THERMOSTAT

Location:

The limit thermostat is located on the back of the tank assembly, FIG. 18.

Test Procedure:

1.Disconnect the brewer from the power source.

2.Check voltage across the black wire from the limit thermostat and the white or red wire on the tank heater terminal. Connect the brewer to the power source. The indication must be:

a)120 volts ac for two wire 120 volt models.

b)200 or 240 volts ac for two wire 200 volt or 240 volt models and three wire 120/240 volt models.

c)100 volts ac for two wire 100 volt models.

3.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #4.

If voltage is not present as described, refer to the Wir- ing Diagrams and check the brewer wiring harness.

4.Check for continuity across the limit thermostat terminals.

If continuity is present as described, the limit thermo- stat is operating properly.

If continuity is not present as described, replace the limit thermostat.

Removal and Replacement:

1.Remove both wires from the limit thermostat terminals.

2.Carefully slide the limit thermostat out from under the retaining clip.

3.Carefully slide the new limit thermostat into the retaining clip.

4.Refer to FIG. 19 when reconnecting the wires.

BLK to Terminal Block	BLU to BLU Lead from
	Control Thermostat

P1984

FIG. 19 LIMIT THERMOSTAT WIRING

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