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Thread: What's wrong with my pump? Excess noise? (Video included)

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    Join Date
    Oct 2014
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    Sydney, Australia
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    What's wrong with my pump? Excess noise? (Video included)

    I'm not sure what's wrong with my pump, but I think the bearings might need replacing.

    It's been like this for about a year (I've only lived here a few months) and I'd like to fix it. I stuck my finger in and found a leaf or two in the impeller, but removing that made no difference to the sound. Before the noise started, it was particularly quiet. The pump still runs and has good output (not as good as before, but still very good)

    Video of Pump Running

    Anyone recognise the noise? It sounds a little worse on this than in real life, but hoping for some guidance.

    Thanks in advance,
    JD.

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    Join Date
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    Sydney, Australia
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    Re: What's wrong with my pump? Excess noise? (Video included)

    Maybe worth mentioning is that the small bucket area where the leaves are collected also never used to have air (auto-primed) but now it always has a little in the top.
    Current Pool Stats:
    Size: 50,000L (approx) - Status: Dirty (Cloudy + Leaves on bottom)
    Pump: Hurlcon CX320 - Pressure: 22psi
    Salt Water - Cell: Surechlore 2000 (5 plate)
    Filter: AstralPool Model 3 - Filter Media: Sand

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    Smykowski's Avatar
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    Re: What's wrong with my pump? Excess noise? (Video included)

    That sounds like bearings to me. The only way you'll know for sure is to take it apart and take a look.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
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    mas985's Avatar
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    Re: What's wrong with my pump? Excess noise? (Video included)

    If the sound is coming mainly from the back of the motor, it could be the centrifugal switch. Sometimes a spring will break or come of the governor and make a strange noise like that.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Los Altos, CA
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    Re: What's wrong with my pump? Excess noise? (Video included)

    Sounds like a idling diesel! Only noise like that that a motor makes is mechanical, metal on metal. Bearings.

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