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Thread: Selecting the correct pool pump.

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    Selecting the correct pool pump.

    I moved into my house a few years ago and have been having problems with my pool pump. I have been getting air bubbles pumped into the pool, as well as the pump leaking in various places. I have taken the pump apart and replaced all the seals twice. This usually helps for a little while and then it goes back to air bubbles. I replaced the above ground suction lines and again that helped a little.

    After doing some more research, I think the issue is that I have a pool pump that is too big.

    I have the Hayward SP2615X20 - 2.0 HP Super Pump

    Pool Size - In-Ground, 10,000 Gallons
    Pool Filter - Hayward Sand S244SV
    Suction - There are 2 lines that meet at the Jandy, the Skimmer and the vacuum line. I believe the main drain runs through the skimmer basket (still can't figure this out). The skimmer is approx 22' of pipe from the pump and the vacuum is 27'. (This assumes they ran the pvc in the shortest / logical route.)
    Suction PVC - 2"
    Filter to pool - 2" PVC + 1" branch for small "water feature" sprayer
    Outlets - 2 water jets back into pool.

    My math is telling me I should have a 3/4 HP Pump. Such as the Hayward SP2605X7.

    I have no idea why they installed such a large pump.

    Please let me know if I've made any errors in my calculations. Thanks.

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    snooptodd's Avatar
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    Re: Selecting the correct pool pump.

    Welcome to the forum.

    That is a monster pump for that pool and you could definitely go with a much smaller pump. Have you checked the suction lines for blockage? Is there any damage to the pump housing that would cause the seals to not stay sealed?

    I would replace the pump just because it is sooo oversized you could save a lot in electric costs, i'm not positive that it will fix the air leak. If you do replace the pump get a 2 speed.
    27' AG, sand filter, Pentair 340203 Two-Speed 3/4-Horsepower, hard plumbed

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    Mod Squad jblizzle's Avatar
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    Re: Selecting the correct pool pump.

    Yes, your pump could be smaller, but it is not really that large of a pump. I do not think the power of the pump is your problem resulting in the air.

    I am not sure what calculations you did, but it is not straightforward to estimate head loss of that is what you were doing. There really is little value to that calculation anyway.

    Do you only get the air when the suction is on the skimmer or the vacuum line?

    Do you have a float diverter under you skimmer basket over 2 open holes?
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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  4. Back To Top    #4

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    Re: Selecting the correct pool pump.

    I get air with both the skimmer and the vacuum.

    I now know what a float diverter is, thanks. No, I do not have one of those.

  5. Back To Top    #5
    Mod Squad jblizzle's Avatar
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    Re: Selecting the correct pool pump.

    You get air with suction from just the skimmer and just the vacuum?
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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  6. Back To Top    #6

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    Re: Selecting the correct pool pump.

    Correct, I get air if the selector is on just the skimmer, or just the vacuum. I seem to get a little less air if it is on mix.

  7. Back To Top    #7
    Mod Squad jblizzle's Avatar
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    Re: Selecting the correct pool pump.

    Where do you see the air? Sounds like it has to be eitherthe Jandy valve or something on the pump. Any chance the lid is warped? Trying running water over the valve or pump lid to see if you can get the air to stop. Or you can try shaving cream.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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  8. Back To Top    #8

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    Re: Selecting the correct pool pump.

    I see the air through the lid of the pump. When I replaced the above ground portion of the pvc, I also replaced the Jandy Valve.

    There is a chance that there is an issue with the pump lid. Re-lubing the seal seems to help for a short while.

    I like the shaving cream idea, I will give that a try.

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