![]() If the capacitor is OK, the needle will jump to zero ohms, and drift back to high. To check the capacitor, set the volt-ohm meter to RX100 scale and touch its probes to the capacitor terminals. Capacitor (on single phase motor) may have failed.Verify the amp draw of motor versus the nameplate rating. If leaks are found, the motor must be replaced. Stator is shorted or went to ground (Motor will make a humming noise and the circuit breaker or fuse will trip).Motor Has Been Running, Then Fails to Start Check the source of power, overload, fuses, controls, etc.Ģ.Rotate the motor’s shaft and feel for rubbing. ![]() Motor damaged and rotor is striking stator.Refer to the wiring diagram to verify the motor is wired correctly.Motor Fails to Start Upon Initial Installation If the motor problems can’t be resolved with this list, please contact your supplier for assistance. Use this resource to troubleshoot your AC motor.
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