Pool hum

Just replaced the impeller and now the pump hums and gets very hot quickly and trips the breaker. Is this a capacitor or another issue?

Does the impeller turn freely by hand?

It does turn freely. It worked when I first replaced the impeller but it was making some noise so I turned it off and took it back apart to make sure everything was installed properly. Hooked it back up and voila it only hums, gets real hot and trips the breaker. Thinking it might be the switch or the capacitor?

I don't know the answer to your question, but I know who will....let me get in touch with Al (Poconos) and get him to pop in here to see if he can help....

I spoke with Al and reminded him that his expertise is needed here! Hopefully he'll pop on here in the next day or so.

Quick update. Each morning I can get the pump started by turning the switch less than a full turn and turning the breaker on and it starts.

Sounds like a bad capacitor to me.

Yup, capacitor prob. you can unplug the capacitor in the back cover of the motor. Test it with a multimeter if you like. $12 part. Make sure to get the correct replacement or itll blow up!

I assume the 'switch' you refer to is the starter switch and you are rotating the rotor. Sounds like you jiggle the switch in the process and it runs. Capacitors usually fail and do not fix themselves, that is, become inermittent. The centrifugal starter switch could have crummy contacts so if you can get in there with a thin, flat file that is best. Next best is to use some 600 grit paper, fold it a couple times to give it some stiffness and dress the contacts. Just a few swipes should do it.
Al

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