Bunn VP17 Benutzerhandbuch

Page 8

Location:

  On Early VP17 Models the tank heater switch is 

located on the rear of the brewer on the upper left side 

of the trunk.

 

On VP17B Models the tank heater switch is located 

on left side of the control panel.

Test Procedure:

1.  Disconnect the brewer from the power source.

2.  Disconnect the black wire from the limit thermo-

stat.

3.  With a voltmeter, and with the tank heater switch in 

the "ON" (upper) position check the voltage between 

the black wire removed from the limit thermostat 

and the white wire on the tank heater. Connect the 

brewer to the power source. The indication must 

be:

 

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

 

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

4.  Disconnect the brewer from the power source.

If voltage is present as described, proceed to #5.

If voltage is not present as described, refer to the Wiring 

Diagrams and check the brewer wiring harness.

5.  Check for continuity between the black wire re-

moved from the limit thermostat and the black insert 

on the terminal block, with the tank heater  switch 

in the "ON" (upper) position. Continuity should not 

be present in the "OFF" (lower) position.

If continuity is present as described, the tank heater 

switch is operating properly.

If continuity is not present as described, replace the 

tank heater switch.

Removal and Replacement: (VP17)

1.  Remove the tank inlet fitting securing fill basin to 

the tank lid. Remove fill basin and gasket. Set all 

three parts aside for reassembly.

2.  Remove sprayhead and hex nut securing sprayhead 

tube to the hood. Set aside for reassembly.

3.  Disconnect the wires on the limit thermostat and 

the tank heater.

4.  Gently pull the thermostat sensor and grommet 

from the tank lid.

5.  Insert a tube to the bottom of the tank and syphon 

ALL of the water out. 

6.  Gently reinstall the thermostat sensor and grom-

met in the tank lid.

7.  Remove the two #8-32 screws securing the tank 

assembly to the hood.

8.  Lift tank and components out as an assembly and 

set aside for reassembly.

9.  Disconnect the two black wires from the tank heater 

switch.

10. Remove the plastic facenut, hex facenut and the 

switch indicator/guard bracket that secures tank 

heater switch to the brewer. Remove switch and 

discard.

11. Insert new tank heater switch through the hole in 

the upper left rear of the trunk and secure with

  switch indicator/guard bracket, hex facenut and 

plastic facenut.

12. Reconnect the two black wires the tank heater 

switch terminals.

P1161.40

VP17 MODELS (Early Models)

VP17B MODELS

P1319.40

FIG. 10 TANK HEATER SWITCH

46721  052512