Troubleshooting; Troubleshooting Gear Motors; The Gearmotor Will Not Run; The Gearmotor Starts Buts Trips Repeatedly On The Overload Protector - Cornelius WM600 Installation & Owner's Manual

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Service manual (28 pages)

Table Of Contents

Table of Contents

IMPORTANT: Only qualified personnel should service internal components or electrical wiring.

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 voltage supply.

3. Problems in the gear motor electrical circuit. See Figure 4

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.

THE MOTOR RUNS BUT OUTPUT SHAFT DOES NOT ROTATE

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.

2. Remove motor end bell and stator, if necessary.

3. Check terminals 1 and 3 on overload. No continuity replace overload. Use a volt–ohm meter. See Figures 4

and 5.

MOTOR CHECK:

The resistance readings on the windings will be between 5 to 25 ohms. A meter capable of these low readings

must be used. The Start Relay cover must be removed. NOTE: Gear motor and related components can be

checked from Pin Connector. See Figures 5 and 6.