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- Jun 12, 2014
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- 4,998
I believe it is the start capacitor, there is normally a centrifugal motor switch which disengages the start wingdings when the RPM reaches a specific speed ~90% of rated speed. As Bill mentioned, if the switch doesn't disengage the capacitor will overheat and the motor will get vey hot. Usually there is a safety plug that will vent electrolytic capacitors, but if they fail shorted, they can explode. Too frequent start/stop cycles can also overheat the capacitors and they can go south pretty quickly. I would also check the wiring, some of it looks darkened.