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Thread: pump runs dry when vacuuming

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    pump runs dry when vacuuming

    18 ft round x 4 foot high pool with 1 hp pump, sand filter. 1 skimmer and 1 return.
    operation normal in filter mode and recirculate mode.
    My vacuuming procedure is to attach vaccum head to pole, attach vaccum hose to vacuum head. put vacuum in pool. take free end of vacuum hose and hold it to return fitting until all air is blown out of vacuum hose, attach vacuum hose to small port in bottom of skimmer, postion skimmer cover inside skimmer to block flow such that only path is through vacuum/vacuum hose.
    When executing this procedure the vacuum has suction for no more than three seconds and then there is no suction, no return flow, no water in pump.
    What is going on? any troubleshooting suggestions?
    Phoenix, AZ
    35-40K gals; Sand Filter; In Ground; Plaster; Sta-Rite System3 130 GMP.

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: pump runs dry when vacuuming

    It sounds like there is an air leak in the vacuum hose. When you lose suction, does the pump strainer basket fill with air?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Join Date
    Mar 2007
    Coastalish 'down easter'

    Re: pump runs dry when vacuuming

    Welcome to TFP!!

    Can you tell us how you attach your vacuum? (it might give us a good hint as to the problem)
    Luv& Luk

    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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