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Page 18
SERVICE (cont.)
CONTACTOR ASSEMBLY (W/MECHANICAL THER-
MOSTAT ONLY)
P999
Location:
The contactor assembly is located inside the
hood just behind the dispense valve.
Test Procedures:
Mechanical Thermostat
1. Disconnect the brewer from the power source.
2. Disconnect the white wire of the two pole 120V
terminal block, white wire of the three pole 120/
208V or 120/240V or the red wire of the two pole
200V or 240V terminal block and the black wire of
the contactor coil and disconnect the black wire of
the control thermostat from the remaining black
wire of the contactor coil.
3. Gently remove the capillary bulb and grommet
from the tank.
4. Check the voltage across the white wire from the
terminal block on 120,120/208, 120/240 volt units
or the red wire from 200, 240 volt units and the
black wire from the control thermostat with a
voltmeter when the thermostat is turned clock-
wise to the "FULL ON" position. Connect the brewer
to the power source. The indication must be:
a.) 120 volts ac for two wire 120 volt models, three
wire 120/208 volt models and three wire 120/240
volt models.
b.) 200 to 240 volts ac for two wire 200 or 240 volt
models.
5. Disconnect the brewer from the power source.
If voltage is present as described, proceed to #6.
If voltage is not present as described, refer to the
wiring diagrams and check the brewer wiring harness.
6. Check for continuity between the two black wires
of the contactor coil.
If continuity is present as described, reconnect one
black wire to the white wire or red wire from the
terminal block and the other black wire to the black
wire from the control thermostat. Reinstall capillary
tube into tank to line 7" above the bulb and proceed to
#7.
If continuity is not present as described, replace the
contactor.
7. Locate the white wire or red wire on L1 terminal
and black wire on the L2 terminal on the contactor.
8. Carefully check the voltage across the white or red
and black wires with a voltmeter. The indication
must be:
a.) 120 volts ac for two wire 120 volt models, 208
volts ac for three wire 120/208 volt models and
240 volts ac for three wire 20/240 volt models.
b.) 200 to 240 volts ac for two wire 200 or 240 volt
models.
9. Disconnect the brewer from the power source.
If voltage is present as described, proceed to #10.
If voltage is not present as described, refer to the
wiring diagrams and check the brewer wiring harness.
10. Check for continuity across the terminals on the
left side of the contactor by manualy closing the
contacts. Continuity must not be present when the
contact is released.
11. Check for continuity across the terminals on the
right side of the contactor by manualy closing the
contacts. Continuity must not be present when the
contact is released.