Filter
Top Products
Page 23
SERVICE (cont.)
TANK HEATER SWITCH
Location:
The tank heater switch is located on the rear of the
brewer on the upper left side of the trunk.
Test Procedure:
1. Disconnect the brewer from the power source.
2. Disconnect the black wire from the limit thermo-
stat.
3. With a voltmeter, check the voltage between the
black wire removed from the limit thermostat and
the white wire on the tank heater, with the tank
heater switch in the "ON" (upper) position. Connect
the brewer to the power source. The indication
must be:
a) 120 volts ac on two wire 120 volt models.
b) 208 volts ac on three wire 120/208 volt models.
c) 240 volts ac on three wire 120/240 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 har-
ness.
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:
1. Turn off and disconnect the incoming water sup-
ply to the brewer.
2. Gently remove the fill tube from back of fill basin.
3. Remove the tank inlet fitting securing fill basin to
the tank lid. Remove fill basin and gasket. Set all
three parts aside for reassembly.
4. Disconnect the water supply to coil assembly and
remove the tube from the tank to the faucet.
5. Remove sprayhead and hex nut securing spray-
head tube to the hood. Set aside for reassembly.
6. Disconnect the wires on the limit thermostat and
the tank heaters.
7. Gently pull the thermostat sensor and grommet
from the tank lid.
8. Insert a tube to the bottom of the tank and syphon
ALL of the water out.
9. Gently reinstall the thermostat sensor and grom-
met in the tank lid.
10. Remove the two #8-32 screws securing the tank
assembly to the hood.
11. Lift tank and components out as an assembly and
set aside for reassembly.
12. Disconnect the two black wires from the tank
heater switch.
13. Remove the plastic facenut, hex facenut and the
switch indicator/guard bracket that secures tank
heater switch to the rear of the brewer. Remove
switch and discard.
14. 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.
FIG. 15 TANK HEATER SWITCH
P1415