Bunn VP17 Betriebsanweisung

Page 10

P1263

Location:

 

The control thermostat is located inside the trunk 

on the 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 the white 

wire on the tank heater. Connect the brewer to the 

power source. The indication must be:

 

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

 

b) 120  volts ac for two wire 120 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 Wiring 

Diagrams and check the brewer wiring harness.

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 white wire 

on the tank heater when the control thermostat is 

turned "ON" (Fully clockwise). Connect the brewer 

to the power source. The indication must be:

 

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

 

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

6.  Voltage must not be present when the thermostat 

is turned to the "OFF" position.

P1161.40

7.   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 leads.

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 con-

trol thermostat to the component bracket in 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 posi-

tion.

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.

FIG. 2 CONTROL THERMOSTAT

FIG. 3 CONTROL THERMOSTAT TERMINALS

10860  090800

BLU to BLU Lead from 

Limit Thermostat

BLK to BLK Lead from 

Tank Heater