Bunn VP17 Betriebsanweisung

Page 13

10860  090800

P1161.40

Location:

 

The  tank  heater  is  located  inside  the  tank  and 

secured to the tank lid.

Test Procedures:

1.  Disconnect the brewer from the power supply.

2.  With a voltmeter, check the voltage across the black 

and white wires 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 Wir-

ing Diagrams and check wiring harness.

4.   Disconnect the black wire and the white wire from 

the tank heater terminals.

5.   Check for continuity across the tank heater termi-

nals.

If continuity is present as described, reconnect the 

wires, the tank heater is operating properly.

If continuity is not present as described, replace the 

tank heater.

NOTE- If the tank heater remains unable to heat, remove 

and inspect heater for cracks in the sheath.

Removal and Replacement: 

1.  Remove the tank inlet fitting securing the fill basin 

to  the  tank  lid,  remove  fill  basin  and  tank  inlet 

gasket. Set all three parts  aside for reassembly.

2.  Disconnect the black wire on the limit thermostat 

from the tank heater switch and disconnect the 

blue wire from the limit thermostat  to the control 

thermostat.

3.   Disconnect the black wire and the white wire from 

the tank heater terminals.

4.  Remove sprayhead and the  hex nut securing the 

sprayhead tube to the hood.  Set aside for reas-

sembly.

5.  Remove the eight #8-32 nuts securing the tank lid 

to the tank.

6.   Remove the tank lid with limit thermostat, spray-

head tube and tank heater

7  Remove the two hex nuts securing the tank heater 

to the tank lid. Remove tank heater with gaskets 

and discard.

8.  Install new tank heater with gaskets on the tank 

lid and secure with two hex nuts.

9.  Install tank lid with limit thermostat, sprayhead 

tube and tank heater using eight #8-32 hex nut.

10. Secure spayhead tube to hood using a  hex nut.

11.  

Install sprayhead.

12.  

Reconnect the wires to the limit thermostat, 

tank  heater  and  control  thermostat.  See  Limit 

Thermostat and Control Thermostat sections in 

this manual when reconnecting wires.

13. Install fill basin, secure with tank inlet fitting and 

gasket. 

14.  

Refer  to  Fig.  9  when  reconnecting  the  tank 

heater wires.

FIG. 8 TANK HEATER

P1163

FIG. 9 TANK HEATER TERMINALS

BLK to Control 

Thermostat

WHI to WHI Lead on 

Power Cord (120V 

Models)

WHI to Terminal Block 

(White Insert) (100 V 

Models)