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My 2 year old air compressor motor just hums when I turn it on. I checked and everything turns free. any ideas?:confused0006:
Dave, I'm doubtful that the starter switch will fix it. On most modern 240 vac compressors, the starter switch is just that, a 2 pole switch. If your motor is humming, then it's probably getting 240 vac to the motor.bought a new starter switch. we'll see if that's it.
The capicitors are the round things on top of the motor. I can't tell which is the start capacitor. Take them both to an electric motor repair shop and they can test them and will have a replacement. There will be wires connected to the capicitors. MARK the location of the wires on the capicitor and which capacitor is which. There should be a size in Mfd. (microfarad) on each capicitor.Not to familiar with electric motors. are the capacitors on the outside of the housing? which one is which if so?