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Thread: losing prime when using skimmer vacuum plate

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    iam4iam's Avatar
    Join Date
    May 2012
    Johnson City, TN

    losing prime when using skimmer vacuum plate

    I am experiencing virtually the exact same problem as described in the initial post of the following thread:

    My water level has to be a couple of inches above the midline of the skimmer plate just to prevent the pump from sucking air with the vacuum plate on. I'm thinking of maybe using a PVC elbow and feeding the vacuum hose through the skimmer opening. Has anyone else encountered (and solved) this problem? The problem was never solved in the thread mentioned above.
    ~18,000 gal (16x32)
    Hayward sand filter
    Circupool RJ45 SWG
    Water Ace pump (age and power unknown; all I know is it is not a Whisperflow and draws about 1.5kW)

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    TFP Guide
    needsajet's Avatar
    Join Date
    Jan 2016
    Sydney, NSW, Australia

    Re: losing prime when using skimmer vacuum plate

    Turn off pump. Put the skimmer plate in place. Put vacuum in the pool. Push hose down hand over hand into the water to it fills with water. Or hold it over a return. With the attachment end kept under water, pass it through the skimmer opening, over the weir. Stick it in the skimmer plate. If, for any reason, you have to pull the hose up over the pool edge and then down to the skimmer plate, put your hand over the end of the hose. Turn pump back on.

    There will be a small amount of air from the end of the hose or from under the skimmer plate. The pump will clear the air. Turn pump off to remove and put the skimmer plate away when not vacuuming.

    If the pump still gets air, the vacuum hose may have leaks.

    If cavitation is caused, or if suction is too much, shop for a skimmer plate with an adjustable bypass.
    12k IG salt; glass beads in plaster; K-2006C, K-1766 Salt, CCL, and Aussie 4in1 (HTH); Pentair Eco800 VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Pentair Rebel pool cleaner; FlowViz flow meter; prior pool AG 10k - Be Safe - FC / CYA Chart - Become a TFP Supporter - Read Before Posting

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    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: losing prime when using skimmer vacuum plate

    Are you experiencing a suction side leak or is the water being drawn into the skimmer faster than it can be replenished through the mouth of the skimmer?
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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