Service & TroubleshootingQuestion 75 of 110
What is the primary function of a run capacitor on a single-phase motor?
a.To fuse the circuit
b.To improve motor efficiency and provide a phase shift for smoother running
c.To ground the motor
d.To measure airflow
Explanation
A run capacitor stays in the circuit during operation, creating the phase shift the motor needs for efficient torque and smoother running. A weak or failed run capacitor causes low torque, overheating, and high amp draw. It is tested with a capacitance meter against its microfarad rating.
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