Cornelius 2000 - Series Manuel d'installation télécharger pdf (Page 22)

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OVERLOAD CHECK – FIGURE 10.

4. Using a volt–ohm meter check the continuity across the overload, contacts #1 & #3. If none, wait for unit to

cool down and try again. If still no continuity, the overload protector is defective and should be replaced.

COMPRESSOR CHECK – FIGURE 11.

The resistance readings on the windings will be between 0.25 and 10.00 ohms, a meter capable of these low

readings must be used.

5. Check between ”C” & ”R.” Replace compressor if there is no continuity as the run windings are open.

6. Check between ”C” & ”S.” Replace the compressor if there is no continuity as the start windings are open.

7. Check between ”C” & ”R”, or ”S” and shell of the compressor. If there is continuity replace the compressor

as the motor is grounded.

8. Check between screw terminal on the overload and ”C” on the compressor. Check and repair the lead or

connections if there is no continuity.

CAPACITOR CHECK

9. Check or replace start capacitor, disconnect bleed resistor before checking for shorted capacitor.

10. Check or replace run capacitor (if supplied) check or shorted capacitor or either terminal grounded to case.

TROUBLESHOOTING GEAR MOTORS

Basically, Gear motor problems can be narrowed down to three areas of checkout.

THE GEARMOTOR WILL NOT RUN

1. No voltage to the transmission terminals – check external circuit.

2. Low voltage – check supply.

3. Problems in the gear motor electrical circuit. See Figure 6

THE GEARMOTOR STARTS BUTS TRIPS REPEATEDLY ON THE OVERLOAD

PROTECTOR:

1. Voltage – high or low voltage can cause the overload to trip.

2. High Gear motor amperage draw, see Specification Chart for ratings and Troubleshooting Guide Pages 1 &

THE MOTOR RUNS BUT OUTPUT SHAFT DOES NOT ROTATE:

1. Replace defective gear motor.

CAUTION: Be sure unit is disconnected from the power source

Disconnect the transmission cable.

OVERLOAD CHECK:

1. Allow motor to cool and reset overload if necessary.

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Cornelius 2000 - Series Manuel d'installation Page 22