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Thread: Rattling Noise in Pump

  1. Back To Top    #1

    Join Date
    May 2014
    Location
    Maine
    Posts
    32

    Rattling Noise in Pump

    I have a Sta-Rite Max E-Pro Centrifugal 1 HP Pump (exact model unknown, I will look tonight) that, over the past few weeks, has been getting much louder and now is extremely loud and has an almost rattling sound coming from the motor area. After running for a few mins, the motor section is pretty hot to the touch on the top, but not on the sides or bottom.

    Last night, I ripped the pump apart to look at the impeller, which appears to be fine. There is little, to no air, getting into the pump basket as it is fully primed with no air bubbles. It does seem to take a little a longer to get fully primed than I remember, though that could be my imagination.

    Ever since I started using it (I bought the house this September), when it is turned on, it makes a quick 1-2 second loud humming noise then kicks on and starts pumping water. After I took the pump apart yesterday and reassembled it, it now makes 4-5 second loud humming noise and sometimes kicks on and sometimes shuts off completely (I'm assuming some type of internal shut-off is occurring).

    The pump sits on the concrete slab in my garage, but is not bolted down. I've tried pushing down on it to simulate bolting, but it does nothing to the noise level.

    I'm thinking its the bearings, but is there anything else that could be causing this? I've heard a capacitor could be at fault, but why would that make the terrible rattling noise?
    IG 16'x37' Vinyl Pool (25,000 gallons); Sta-Rite Cartridge Filter

  2. Back To Top    #2

    Join Date
    May 2014
    Location
    Maine
    Posts
    32

    Re: Rattling Noise in Pump

    Any thoughts? The pump is 2-speed. I've been running it on the high speed most of the time, but I've switched to the low speed, and it seems to be much quieter.
    IG 16'x37' Vinyl Pool (25,000 gallons); Sta-Rite Cartridge Filter

  3. Back To Top    #3

    Join Date
    Oct 2013
    Location
    Chapin, SC
    Posts
    1,141

    Re: Rattling Noise in Pump

    The capacitor on my pump needed replacing early this spring. It too made a humming noise then nothing.
    Pool size: 24000gal inground Vinyl-Taylor k-2006 and k-1766 test kits and-speed stir
    Intermatic P1353ME digital timer w/freeze sensor
    CircuPool Si-45 SWCG System
    Polaris 280 vacuum/Polaris PB4-60 boost pump
    Pentair IntelliFlo VS 3hp Pump--Pentair sand filter

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