Bunn OT Service Manual download pdf (Page 23)

Page 23

FIG. 23 LIMIT THERMOSTAT

FIG. 24 LIMIT THERMOSTAT WIRING

SERVICE (cont.)

Limit Thermostat

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 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. 24 when reconnecting the wires.

Location:

The limit thermostat is located on the tank lid between

the tank heater terminals, FIG. 23.

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.

P1698

P1984

BLK to Terminal Block

BLU to BLU Lead from

Control Thermostat

10021 071700

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 35 36

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