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Thread: Slow Priming Pump

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    Join Date
    Jun 2015

    Slow Priming Pump

    My pump is slow to prime. What would be a good way to check for a leak?
    Last edited by BoDarville; 06-01-2015 at 07:36 AM. Reason: edited for readability and to remove reference to old thread

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    bobodaclown's Avatar
    Join Date
    Apr 2011
    Lakeland, FL

    Re: Slow Priming Pump

    Are you seeing air bubbles in the basket once it's primed and running? If not, then it's pretty minor air leak. One way to check if you're getting air is when the pump is running/water flowing, is to run a steady stream of water over all the fittings, and see if the air in the basket goes away (it will suck in the water/not the air) and will narrow down which fitting. You can also use foaming type shaving cream.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Lakeland Florida

  3. Back To Top    #3

    Join Date
    May 2015
    Mount Cheaha Alabama

    Re: Slow Priming Pump

    How high is the pump above the skimmer?
    Do you have a check valve before the pump suction? or an isolation valve?

    Any leak down stream of the pump will show as a water drip and allow the pump to drain back to water level when turned off.
    Suction side leaks can be a number of things and will cause bubbles in you suction basket.
    Make sure the suction basket oring is in good shape, make sure none of the pump drain plugs drip when the pump is off, also check that mechanical seal is not leaking(in between motor and pump) when turned off.
    Running your pump for extended periods without prime is a bad idea
    30k in ground vinyl lined pool surrounded by decking in the woods.
    Hayward sand filter circa mid 80's
    If there is a way to do things less expensively and yield a superior product I am all ears

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