Bunn VLPFCanada Manuale Proprietario

 

 

 

 

 

 

 

 

Page 27      

P1983.40

FIG. 24 TANK HEATER

10179 060100

Location:

 

The tank heater is located on the tank lid.

Test Procedure:

1.  Disconnect the brewer from the power source and 

remove both wires from the tank heater.

2.  With  a  voltmeter,  check  the  voltage  across  the 

black  and  white  wires  removed  from  the  tank 

heater when the control thermostat is turned “ON” 

(fully clockwise). Connect the brewer to the power 

source. The indication must be 120 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 Wir-

ing Diagram and check the brewer wiring harness.

4.  Check for continuity across the terminals of the 

tank heater.

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  the  heater  for  cracks  in  the 

sheath.

Removal and Replacement:

1.  Remove the white wire from the tank heater ter-

minal and the blue wire from the limit thermostat 

terminals.

2.  Gently pull the liquid level probe and thermostat 

tube with grommet out of the tank lid.

3.  Disconnect the 1/4” flare fitting on the tank lid inlet 

fitting.

4.  Remove the sprayhead and sprayhead nut from 

the panel on the bottom of the hood.

5.  Disconnect the airvent tube from the fitting above 

the sprayhead panel.

6.  Loosen the eight #8-32 nuts on the tank lid and 

remove the tank lid.

7.  Remove  the  two  nuts  from  the  tank  heater  fit-

tings.

8.  Remove the tank heater.

9.  Install the new tank heater with new sealing wash-

ers on the underside of the tank lid.

10. Securely tighten the nuts to be certain of a water-

tight seal.

11.  Reinstall  tank  lid  and  secure  with  eight  #8-32 

nuts.

12. Reinstall the sprayhead tube nut and sprayhead.

13. Reinstall the liquid level probe and thermostat into 

the tank lid.

14. Securely fasten the 1/4” flare fitting to the tank lid 

inlet fitting.

15. Refer to FIG. 25 when reconnecting the wires.

BLK to limit thermostat

WHI to Cordset

FIG. 25 TANK HEATER TERMINALS

P1990.70