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Thread: Air bubbles in return Jets (Post with photos)

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    Join Date
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    Air bubbles in return Jets (Post with photos)

    When I run my pump with value position like below, I notice one of the return Jets in Pool and one in spa produce air bubbles

    Position 1
    Suction Line described from left to right:
    1.Spa main drain fully closed
    2. Skimmer 1 fully opened
    3. Skimmer 2 fully opened
    4.Suction from pool main drain fully opened no water coming in from pool cleaner



    Position 2 No Air bubbles from return jets

    Suction Line described from left to right:
    Everything same as Position 1 except #4.

    4. Suction from pool main drain fully closed.



    [IMG][/IMG]

    Crack in the PVC Coupling, during adjacent value positioning water escape through hairline crack, is that primary source of air entering into the pump?

    Hairline crack

    [IMG][/IMG]
    13K gal, IG, Gunite pool with raised spa water spill over to pool, built on 2005
    1.5 HP Hayward MaxFlo VS - June 2014
    DE Filter Model # DE6020
    Added Borates on Jun 2014

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    Richard320's Avatar
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    Re: Air bubbles in return Jets (Post with photos)

    Excellent job of diagnosis!

    Coat that area with shaving cream when it normally would be blowing bubbles. See if it sucks a hole in the foam, or if you start seeing white stuff in the skimmer or coming out the returns. Then try the stem of that multiport valve the same way.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Air bubbles in return Jets (Post with photos)

    thanks Richard, is there a temporary fix to fill that hairline crack? I am not sure how big of of task it would be to replace that cracked coupling.
    13K gal, IG, Gunite pool with raised spa water spill over to pool, built on 2005
    1.5 HP Hayward MaxFlo VS - June 2014
    DE Filter Model # DE6020
    Added Borates on Jun 2014

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    Richard320's Avatar
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    Re: Air bubbles in return Jets (Post with photos)

    Quote Originally Posted by missourian View Post
    thanks Richard, is there a temporary fix to fill that hairline crack? I am not sure how big of of task it would be to replace that cracked coupling.
    Is that where it is for sure?

    I'd try epoxy. If it's the valve, they sell overhaul kits with new seals.

    But you need to FIND the leak before you start worrying about repairing it.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Air bubbles in return Jets (Post with photos)

    Quote Originally Posted by Richard320 View Post
    Is that where it is for sure?

    I'd try epoxy. If it's the valve, they sell overhaul kits with new seals.

    But you need to FIND the leak before you start worrying about repairing it.

    I tried the shaving cream trick this evening, the foam acted as seal and reduced my air bubbles, I don't think anything sucked in, I have some A+B epoxy remaining i will try to seal that hairline crack and report back. Thanks again!
    13K gal, IG, Gunite pool with raised spa water spill over to pool, built on 2005
    1.5 HP Hayward MaxFlo VS - June 2014
    DE Filter Model # DE6020
    Added Borates on Jun 2014

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