Bunn SA Manual De Usuario

Page 20

c) 200 to 240 volts ac for two wire 200 or 240 volt
models.
d) 100 volts ac for two wire 100 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 wiring harness.

4.

Disconnect the black wire and the white wire or
red 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  top  cover  or  top  warmer  housing  as
prevoiusly described.

2.

Disconnect the water supply tube from the sole-
noid.

3.

On brewers with faucet, disconnect the faucet.

4.

Remove sprayhead and the  hex nut securing the
sprayhead tube to the hood.  Set aside for reas-
sembly.

5.

Disconnect the wire from the tank level probe.

6.

Remove  the  thermostat  capillary  bulb  as  de-
scribed in section for control thermostat.

7.

Disconnect the wires from the limit thermostat.

Location:

The  tank  heater  is  located  inside  the  tank  and

secured to the tank bottom.

Test Procedures:
1.

Disconnect the brewer from the power supply.

2.

Check  the  voltage  across  the  black  and  white
wires on 100 or 120 volt models or the black and
red  wires  for  120/240  volt    models,  200  volt
models and 240 volt models with a voltmeter.
Connect  the  brew  to  the  power  source.  The
indication must be:
a) 120 volts ac for  two  wire 120 volt 15 and 20
amp models .
b)  240  volts  ac  for  three  wire  120/240  volt
models.

P1592

FIG. 12 TANK HEATER

29251 052500