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Thread: Air getting in?

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    Air getting in?

    I will try to post this question in the correct forum . Below is a picture of the suction side of my pump. There are 3 (one not show) pipes coming in. The one with the ball valve, and two ran through the other. There is a main drain and two skimmers so I don't know which line is which. The pool was neglected for over a year and I just had it drained and a new liner put in. Following the directions someone gave me on here, I backwashed the filter, then rinsed, and ran it on filter. With the ball valve closed, everything seems to run fine. The other valve has two ports and different settings from two different 1/2 settings, a full, and two offs (I don't have a clue where it should be set). I have it set on 1/2 pointing to the top. When I open the ball valve, a lot of air enters in and the pump almost loses its prime if that makes sense. It will have a ton of air in the basket for 10 seconds and then air goes a way and full water for 20 seconds. This cycle repeats itself over and over with the ball valve open. Before I ran everything, I took the basket lid off and filled it with water like it said and got it as full as I could. It kept making gulping sounds and never would really get full. Could there really be this much left over air in that line? Could a clogged skimmer or main drain cause all of this air? Quite possibly the equipment was run with tons of algae and sludge in the pool. I have checked for leaks around the equipment but don't see any. I just hope I don't have an underground leak. Here is my equipment list.

    4 returns (5 if you count the Polaris port)

    2 skimmers

    Hayward pro series sand filter with vari-flo xl valve.

    Polaris Auto clear plus SWG

    Intermatic T104P3 timer

    Hayward 1.5hp self priming super pump

    Polaris halcyon booster pump.

    31,000G IG vinyl 20X40 True L. Hayward 1.5 superpump, Autopilot Pool Pilot Digital SWG, Hayward Model S244T 300lb sand filter, TF100 kit

  2. Back To Top    #2

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Air getting in?

    I just hope I don't have an underground leak.
    You probably don't.

    If the pump is intermittently gulping air and losing prime, I would check to see if the pool water is high enough in the skimmers to keep them from sucking air.

    Turn on the pump and then go visually watch the skimmers.....if they are sucking air, increase your pool depth by an inch or so and it will solve your issue.

    Post back if I have misunderstood your post.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Air getting in?

    There seems to be plenty of water in the skimmers. It is covering over half of the door and it isn't sucking air. The gulping I was hearing was when I was back filling the suction lined through the pump basket.
    31,000G IG vinyl 20X40 True L. Hayward 1.5 superpump, Autopilot Pool Pilot Digital SWG, Hayward Model S244T 300lb sand filter, TF100 kit

  4. Back To Top    #4

    Join Date
    Mar 2007
    Coastalish 'down easter'

    Re: Air getting in?

    I gave this a quick read and am wondering if the valve is to a MD that has been plugged off. Knowing which valve controls which line is kind'o important, play with them and try to figure out what no longer is pulling water when closed and then mark the pipe
    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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