Bunn VP17A Guía Del Usuario

Page 12

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 red wire. Connect the brew to the power 

source. The indication must be 220 to 240 volts 

ac. 

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 wiring harness.

4.   Disconnect the thermal cut-offs  from the tank 

heater terminals.

5.   Check for continuity across the tank heater termi-

nals.

If continuity is present as described, reconnect the ther-

mal cut-offs, 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 thermal cut-off with blanket warmer 

lead (white) and thermal cut-off with ready light 

harness lead (black) from the tank heater termi-

nals.

3.   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.

P1262

FIG. 6 TANK HEATER

10860.1  071598

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 sprayhead 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 sprayhead tube and tank heater 

using eight #8-32 hex nut.

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

11. Install sprayhead.

12. Reconnect the thermal cut-offs to the tank heater 

terminals.

13. Slide the grommet to the line 4.5" above the capil-

lary bulb. 

14. 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.

15. 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.

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

gasket. 

17. Refer to Fig.7 when reconnecting the tank heater 

wires.  

 

 

FIG. 7 TANK HEATER TERMINALS

P1163

Thermal Cut-Off & BLK 

Lead on Ready Light 

Harness

Thermal Cut-Off & 

WHI Lead from Tank 

Warmer Blanket