SERVICE (cont.)
CONTACTOR ASSEMBLY (ELECTRO/MECHANICAL ONLY)
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| L2T | 1L |
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| 4L | L3 | T |
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5 | T |
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TL | T |
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FIG. 6 CONTACTOR ASSEMBLY | P2231.35 | ||||
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Location:
The contactor assembly is located inside the hood to the right of the overflow cup.
Test Procedures:
Mechanical Thermostat
1.Disconnect the brewer from the power source.
2.Disconnect the white wire or the red wire 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.With a voltmeter, check the voltage across the white wire from the terminal block on 120/208, 120/240 volt units or the red wire from 200, 240 volt units and the black wire from the control thermostat 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 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 har- ness.
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.With a voltmeter, carefully check the voltage across the red and black wires on L1 and L2. The indica- tion must be:
a.) 208 volts ac for three wire 120/208 volt models and 240 volts ac for three wire 120/240 volt models.
b.) 200 to 240 volts ac for two wire 200 or 240 volt models.
8.Disconnect the brewer from the power source.
If voltage is present as described, proceed to #9.
If voltage is not present as described, refer to the Wiring Diagrams and check the brewer wiring har- ness.
9.Check for continuity across the terminals on the left side of the contactor by manually closing the contacts. Continuity must not be present when the contact is released.
10.Check for continuity across the terminals on the right side of the contactor by manually closing the contacts. Continuity must not be present when the contact is released.
If continuity is present as described, the contactor is operating properly.
If continuity is not present as described, replace the contactor.
Page 18 | 27362 | 092900 |
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