SERVICE (cont.)
CONTROL THERMOSTAT
P1161.40 |
FIG. 2 CONTROL THERMOSTAT |
Location:
The control thermostat is located inside the trunk on the left side of the component bracket.
Test Procedures:
1.Disconnect the brewer from the power source.
2.With a voltmeter, check the voltage across the blue wire on the control thermostat and the white wire on the tank heater. Connect the brewer to the power source. The indication must be:
a)100 volts ac for two wire 100 volt models.
b)120 volts ac for two wire 120 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 the brewer wiring har- ness.
4.Gently remove the capillary bulb and grommet from the tank.
5.With a voltmeter, check the voltage across the black wire of the control thermostat and the white wire on the tank heater when the control thermo- stat is turned "ON" (Fully clockwise). Connect the brewer to the power source. The indication must be:
a)100 volts ac for two wire 100 volt models.
b)120 volts ac for two wire 120 volt models.
6.Voltage must not be present when the thermostat is turned to the "OFF" position.
7.Disconnect the brewer from the power source.
If voltage is present as described, reinstall the capillary tube into the tank to the line 4.5" above the bulb, the control thermostat is operating properly.
If voltage is not present as described, replace the thermostat.
Removal and Replacement:
1.Remove wires from control thermostat leads.
2.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.
3.Remove the one
4.Slide the grommet to the line 4.5" above the bulb on the new capillary tube.
5.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.
6.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.
7.Using one
8.Refer to Fig. 3 when reconnecting the wires.
9.Adjust the control thermostat as required.
BLU to BLU Lead from
Limit Thermostat
BLK to BLK Lead from
Tank Heater
P1263
FIG. 3 CONTROL THERMOSTAT TERMINALS
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