SERVICE (cont.)
LEVEL CONTROL BOARD AND LEVEL PROBE
P1203.45 |
FIG. 17 LEVEL CONTROL BOARD AND PROBE |
Location:
The level control board is located on the upper right rear of the front panel just in front of the tank.
The Level probe is located on the right center of the tank lid.
Test Procedure:
1.Disconnect the dispenser from the power source.
2.Remove the violet wire from terminal 1 & pink wire from terminal 4 of the circuit board.
3.Check the voltage across terminals 2 & 3 with a voltmeter. Connect the dispenser to the power source. The indication must be 120 volts ac for two wire 120 volt models, three wire 120/208 volt models, three wire 120/240 volt models and 240 volts ac for two wire 240 volt models.
4.Disconnect the dispenser 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 dispenser wiring haness.
5.Reconnect the violet wire to terminal 1.
6.Carefully connect a piece of insulated jumper wire to terminal 4. Keep the other end of this wire away from any metal surface of the dispenser.
7.Check the voltage across terminals 1 & 3 with a voltmeter. Connect the dispenser to the power source. The indication must be 120 volts ac for two wire 120 volt models, three wire 120/208 volt models, three wire 120/240 volt models and 240 volts ac for two wire 240 volt models after a delay of approximately 5 seconds.
8.Touch the free end of jumper wire to the dispenser housing. The indication must be 0.
9.Move the jumper wire away from the dispenser housing. The indication must again be 120 volts ac for two wire 120 volt models, three wire 120/208 volt models , three wire 120/240 volt models and 240 volts ac for two wire 240 volt models after a delay of approximately 5 seconds.
10.Disconnect the dispenser from the power source and remove the jumper wire from terminal 4.
If voltage is present as described, the level control board is operating properly, proceed to #11.
If voltage is not present as described, replace the level control board.
11.Reconnect the pink wire to terminal 4.
12.Gently pull the probe out of the tank lid and inspect for corrosion. Replace it if necessary.
13.Place the probe so that neither end is in contact with any metal surface of the dispenser.
14.Check the voltage across terminals 1 & 3 with a voltmeter. Connect the dispenser to the power source. The indication must be 120 volts ac for two wire 120 volt models, three wire 120/208 volt models, three wire 120/240 volt models and 240 volts ac for two wire 240 volt models after a delay of approximately 5 seconds.
15.Move the probe's flat end to the dispenser hous- ing. The indication must be 0.
16.Move the probe's flat end away from the dispenser housing. The indication should again be 120 volts ac for two wire 120 volt models, three wire 120/ 208 volt models, three wire 120/240 volt models and 240 volt ac for two wire 240 volt models.
26 | 27591 031597 |
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