Pool pump motor humming but not running

New2water

LifeTime Supporter
Jun 28, 2011
145
Stockton, CA
Pool Size
18000
Surface
Plaster
Chlorine
Liquid Chlorine
Our pool motor hums for a few minutes then trips/clicks and stops. I turn off power at the main breaker before I do anything to the motor. I have changed the starting capacitor but that didn’t help. How do I troubleshoot?
 

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Can you spin the motor shaft by hand? If it hangs up or seems stiff, it could be the bearings are shot which can be replaced.
 
If it does spin freely, the next likely cause is a bad capacitor. That will be an easy and cheap fix if you can find a correct replacement.

In case you have not checked free rotation before, most pumps allow this by shutting them down (make 100% sure it can't turn on while you're working on it; i.e. flip the right breaker). Then remove the intake basket, reach fingers into the intake, and try to spin the impeller.
 
I removed the motor and found that it is not spinning freely. I don’t have the tools or the energy to replace its bearings. It is about 12 years old pump.
Which motor should I buy to replace it with?
 
I think your best way is a complete new vs pump. If you don't have automation then you have choices but the won't be direct fit without some plumbing modifications.
Can we see your circuit breaker panel for the pool equipment.
 
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Fwiw, if you decide to replace the whole pump, Intelliflo VS pumps are plumbing compatible with Whisperflo. At least mine was. But beware: the Intelliflo is somewhat longer on the motor side. Also, it's hard to tell from the picture, but it looks like there is no union at the joint we can see. If so, some re-plumbing is probably required anyway.
 
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Fwiw, if you decide to replace the whole pump, Intelliflo VS pumps are plumbing compatible with Whisperflo. At least mine was. But beware: the Intelliflo is somewhat longer on the motor side. Also, it's hard to tell from the picture, but it looks like there is no union at the joint we can see. If so, some re-plumbing is probably required anyway.
Thank you. I’m trying to avoid replacing the pump since kids are grown and out of the house. We don’t use the pool much. Just maintaining it.
 
I think your best way is a complete new vs pump. If you don't have automation then you have choices but the won't be direct fit without some plumbing modifications.
Can we see your circuit breaker panel for the pool equipment.

I think your best way is a complete new vs pump. If you don't have automation then you have choices but the won't be direct fit without some plumbing modifications.
Can we see your circuit breaker panel for the pool equipment.
 

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