Question about Hayward 1.5hp Pool Pump Motor Motor A O Smith Electric Pool Motor for 56j Frame Motors Ust1152

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My Pool Pump Motor Had been running fine, then the other day the motor shut down. The motor was very hot, once it cooled down you could turn it back on. It would run for awhile then shut down again. What could be the problem.

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Most single phase motors have an overload protection device, either over current operated or temperature operated, either way once it cools the motor can be restarted, but you need to find the problem.
1. Bearings, if it runs noisily and possibly vibrates it might need a new set of bearings.
2. If it sounds like it has bit of an electrical hum or sounds labored may there is a pump problem overloading the motor and therefore drawing too much current and overheating.
3. Depending on the internal start and run circuit the start capacitor may have died or the centrifugal switch that switches between the start and run windings once it gets some RPM going may be malfunctioning.
4. It could just have a stator winding problem and need rewinding.
Unfortunately the last 3 options need some electrical test instruments and will need to open the motor up to see what design it is. Your best bet is to take it to your local rewind shop and get them to check it for you.
A rewind may be just as expensive as a new motor these days $300 to $400

Posted on Oct 24, 2010

  • Jay Finke
    Jay Finke Nov 21, 2010

    it could be a dirty start switch or could be the start or run capacitor is WEEK OR BAD , look for your local pool pump repair guy with free testing. WARNING capacitors hold electricity and can give a nasty shock.. testing is quick. I recommend it. ask them if they can test it right away, if not thank them and go elsewhere. if you own a pool, a good electric motor repair shop can save you thousands of dollars over the years.TRUE !
    a rebuild on your motor should cost around 75$ and when you goto pick up your motor ask them how can i take better care of my pump and motor ?

    THE POOL PUMP REPAIR PUPPY SAYS "PRIME THAT PUMP AFTER A REPAIR !"
    REMEMBER TO VOTE FOR YOR FIxIT GUY, AND BUY USA MADE PRODUCTS.
    Thanks.. Jay

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