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Thread: Pump Motor Noise When Shutting Off

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    Pump Motor Noise When Shutting Off

    So I will give you the symptoms. The pressure in the filter gauge when down 5-7psi and then I noticed when the pump was shut off I heard the winding down noise. Not like marbles or anything...like non lubricated parts...what do you think?
    Newbie in Hampton, Virginia
    TF-100 test kit
    18' round x52" /Sharkline Heritage /8000 gal /vinyl AGP
    Intex 2650 GPH, 1 HP, sand filter and SWG combo
    Solar cover

  2. Back To Top    #2

    Join Date
    Aug 2010
    Location
    Boston, MA
    Posts
    176

    Re: Pump Motor Noise When Shutting Off

    If it sounds like a loss of lubrication, that's most likely what it is. Have you looked around and below the pump to see if there might be any perceptible leak?
    20k gallon IGP
    Plaster over gunite
    3/4 hp Hayward pump
    Purex Triton DE filter
    TF100 test kit w/ speedstir

  3. Back To Top    #3

    Re: Pump Motor Noise When Shutting Off

    There is a line near the suction of the impeller cover and it looks like a crack. I have not seen it leak...at first I thought it might just be a form line from when it was made but I am almost sure its a crack. We have had rain for a while so when its running its damp there but not dripping
    Newbie in Hampton, Virginia
    TF-100 test kit
    18' round x52" /Sharkline Heritage /8000 gal /vinyl AGP
    Intex 2650 GPH, 1 HP, sand filter and SWG combo
    Solar cover

  4. Back To Top    #4

    Join Date
    Aug 2010
    Location
    Boston, MA
    Posts
    176

    Re: Pump Motor Noise When Shutting Off

    I mean in the body of the pump which could produce an oil leak. I wouldn't expect a water leak to cause lubrication problems.
    20k gallon IGP
    Plaster over gunite
    3/4 hp Hayward pump
    Purex Triton DE filter
    TF100 test kit w/ speedstir

  5. Back To Top    #5

    Re: Pump Motor Noise When Shutting Off

    Like if it was leak in the seal and then the shaft right....thats would suck. Not that I saw... I will check when i get back. If that happens I might replace being that its an older single speed.
    Newbie in Hampton, Virginia
    TF-100 test kit
    18' round x52" /Sharkline Heritage /8000 gal /vinyl AGP
    Intex 2650 GPH, 1 HP, sand filter and SWG combo
    Solar cover

  6. Back To Top    #6

    Re: Pump Motor Noise When Shutting Off

    It could be air in the system due to an air leak. Compressed air in the filter can cause the impeller to run backwards when the pump is turned off and cause a sound similar to what you are describing.

    Otherwise, it could be the bearing going bad.

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