Filter
Top Products
Page 20
SERVICE (cont.)
TANK HEATER SWITCH
P2195.40
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 (Automatics only) or the blue wire (Pour Overs
only).
3. With the tank heater switch in the "ON" (upper)
position, and with a voltmeter, check the voltage
between the black wire removed from the limit
thermostat or the blue wire from the control ther-
mostat and the red wire on the tank heater. Con-
nect the brewer to the power source. The indica-
tion must be 240 volts ac.
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 Diagram
and check the brewer wiring harness.
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.
6. Disconnect the red wire from the thermal fuse on
the tank heater.
7. Check for continuity between the red wire re-
moved from the thermal fuse and the red insert on
the teminal 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. Shut off and disconnect the incoming water sup-
ply to the brewer. On automatic brewers gently
remove the fill tube from the back of fill basin.
2. Remove the tank inlet fitting securing fill basin to
the tank lid. Remove fill basin and gasket. Set all
three parts aside for reassembly.
3. On brewers with faucets, disconnect the water
supply to coil assembly and remove the tube from
the tank to the faucet.
4. Remove sprayhead and hex nut securing spray-
head tube to the hood. Set aside for reassembly.
5. Disconnect the wires on the limit thermostat and
the tank heater.
6. Gently pull the thermostat sensor and grommet
from the tank lid.
7. Insert a tube to the bottom of the tank and syphon
ALL of the water out.
8. Gently reinstall the thermostat sensor and grom-
met in the tank lid.
9. Remove the two #8-32 screws securing the tank
assembly to the hood.
10. Lift tank and components out as an assembly and
set aside for reassembly.
11. Disconnect the two black wires and the two red
wires from the tank heater switch.
12. 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.
FIG. 14 TANK HEATER SWITCH
10690.1 063000