Bunn VP17A service manual SERVICE cont, Control Thermostat, is turned to the OFF position

SERVICE (cont.)	7. Voltage must not be present when the thermostat
CONTROL THERMOSTAT	is turned to the "OFF" position.

FIG. 2 CONTROL THERMOSTAT P1262

Location:

The control thermostat is located inside the trunk on the upper left side of the component bracket.

Test Procedures:

1.Disconnect the brewer from the power source.

2.With a voltmeter, check the voltage across the blue wire on the control thermostat and red insert on terminal block. Connect the brewer to the power source. The indication must be 220 to 240 volts.

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 Wiring Diagrams and check the brewer wiring har- ness.

4.Gently remove the capillary bulb and grommet from the tank.

5.With a voltmeter, check the voltage across the black wire of the control thermostat and the red insert on the terminal block, when the control thermostat is turned "ON" (Fully clockwise). Con- nect the brewer to the power source. The indica- tion must be 220 to 240 volts ac.

6.Disconnect the brewer from the power source.

If voltage is present as described, reinstall the capillary tube into the tank to the line 4.5" above the bulb, the control thermostat is operating properly.

If voltage is not present as described, replace the thermostat.

Removal and Replacement:

1.Remove wires from control thermostat.

2.Remove the thermostat capillary bulb by firmly pulling up on the capillary at the tank lid. This will disengage the grommet from the tank lid.

3.Remove the one #8-32 screw securing the control thermostat to the component bracket inside the trunk.

4.Slide the grommet to the line 4.5" above the bulb on the new capillary tube.

5.Insert the capillary bulb through the hole in the tank lid and press the grommet firmly and evenly so that the groove in the grommet fits into the tank lid.

6.Carefully bend the capillary tube so that the tube and bulb inside the tank are in the vertical position.

NOTE - The capillary tube must be clear of any electri- cal termination and not kinked.

7.Using one #8-32 screw secure the control thermo- stat to the component bracket inside the trunk.

8.Refer to Fig. 3 when reconnecting the wires.

9.Adjust the control thermostat as required.

BLK or RED to Thermal Cut-Off

BLU to Terminal Block/Tank

Heater Switch

P1263

FIG. 3 CONTROL THERMOSTAT TERMINALS

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