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Thread: Pump noise

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    MJCP's Avatar
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    Sep 2007
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    Pump noise

    The only label on my pump is on the motor and it is an A.O. Smith Motor 1Hp It is at least 5 years old

    My pump is making a noise it never made before, if I had to guess I would think it was a bearing squeal. It is not all that loud or irritating "Yet". Just a bit worse than a hum. But definitely not the way it sounded before.

    The pressure may not have changed at all, but it may be lower. It is at 14psi and everything else is cleaned and backwashed. My system normally runs at 15-18psi. When the filter needs a backwash it gets to about 23psi. Anything lower than 15 (usually 10 -15psi) tells me to clean the pine needles out of the impeller.

    Can the bearings be lubricated?
    Is this the beginning of the end for my pump?
    Can I ignore it till it gets too loud to tolerate?
    Is there something else I should check or suspect.

    Thanks for any help
    15x32 Lazy L Inground / Concrete - 20,000 US Gal 1979 build
    1.0Hp Maxiglass/ Sand Filter, 7th season with Pool
    Painted cement finish repainted 2011
    400,000 btu Pentair Master Temp NG

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    Re: Pump noise

    Hard to say... but 1 thing to check is underneath the pump where the motor joins the housing for a leak, while the pump is running, which would indicate a bad shaft seal assembly which is a common cause for bearing or shaft oxidation and therefore 'squealing'. The bearings can be repacked, it takes a special tool and I have no idea how to do it, but I do know that sometimes the repacked bearings last for years and other times they only last a few weeks I'd check for seal failure - if you see water under the pump, change the seal assembly before the damage gets any worse - if no drip, let it ride for now.
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

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    MJCP's Avatar
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    Re: Pump noise

    Thanks for that,

    No sign of a leak, I removed the pump housing band, and separated the housing to clean out the impeller ( it wasn't clogged). It was difficult to get back together, I've done this many times before and don't ever remember having problems getting it back together though. I lubed the O rings and put it back together then checked for leaks. Again the noise is not actually a squeal it is more like a high pitched rubbing noise, higher in pitch than a hum, but more like a scraping at high RPM.

    If there isn't a way to lubricate the bearings I will probably just ignore it for now, since the end of the season in Michigan is already here. But next season I am afraid that if the pump dies in the middle of my Start Up it might push me over the edge, unless next seasons start up is easy thanks to the BBB method
    15x32 Lazy L Inground / Concrete - 20,000 US Gal 1979 build
    1.0Hp Maxiglass/ Sand Filter, 7th season with Pool
    Painted cement finish repainted 2011
    400,000 btu Pentair Master Temp NG

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    Re: Pump noise

    Quote Originally Posted by MJCP
    Can the bearings be lubricated?
    Is this the beginning of the end for my pump?
    Can I ignore it till it gets too loud to tolerate?
    Is there something else I should check or suspect.
    Yes
    Yes
    Yes
    No...
    Factory Warranty Station for:
    Jandy/Zodiac, Pentair, Sta-Rite, Raypak, Polaris,
    and Paramount pool cleaning systems.

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    Re: Pump noise

    I replaced the bearings in my pump about a year and a half ago. If you're handy, it's a pretty easy job. The bearings cost around $22 and I installed a new shaft seal for another $11 while it was apart. You have all winter to work on it. 8)

    It's way cheaper than a new motor and if you screw it up, it was broken anyway.
    26,000 Gallon Gunnite IGP
    2 HP Challenger High Head Pump
    60sf Nautilus DE filter
    Polaris 280

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    MJCP's Avatar
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    Michigan
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    Re: Pump noise

    Thanks all

    I found where to buy the bearings and a new seal,
    Another Winter Project - Can't wait!
    15x32 Lazy L Inground / Concrete - 20,000 US Gal 1979 build
    1.0Hp Maxiglass/ Sand Filter, 7th season with Pool
    Painted cement finish repainted 2011
    400,000 btu Pentair Master Temp NG

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