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Thread: Sucking air somewhere

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    davekippen's Avatar
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    Sucking air somewhere

    This is probably a common question but every setup is different. I watched some videos and have checked the pump cover seal already, it seems fine. Here are the symptoms:

    Bubbles in the return lines (not super bad, but bad enough)
    Loud gurgling or bubbling sound in the multi-valve atop the pump when on filter
    No gurgling or bubbling sound in the multi-valve when on back wash or rinse

    The plumbing here does not look like any of the normal plumbing I have seen in the videos - there are no couplers other pipes that might have O-rings, just PVC and some kind of black pipe with hose clamps (which might be my problem in the first place?)

    This is my first full year with this pool. Trying to figure out if I should just replace the piping "before" the pump to see if that is the problem or if anyone has other ideas I am all ears!!

    POOL PUMP SYSTEM.jpg
    New owner of an old in ground 18x36 rectangle pool. Solar heater, sand filter, pretty basic!

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    Mod Squad jblizzle's Avatar
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    Re: Sucking air somewhere

    Welcome to TFP!!!

    Have you read the Suction Leaks article in Pool School? It has some ideas on how to start trying to find it.
    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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    davekippen's Avatar
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    Re: Sucking air somewhere

    Great info, thanks. To clarify, there should be no bubbles at all running through the pump? zero, zilch nada?
    New owner of an old in ground 18x36 rectangle pool. Solar heater, sand filter, pretty basic!

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    Mod Squad jblizzle's Avatar
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    Re: Sucking air somewhere

    Bubbles where?

    The only times I can thing of where you can see bubbles in the pool returns are if you have a SWG with a short pipe run to the pool or is you have solar and the VRV valve is not fully closed. Beyond that, there should not be bubbles in the system.

    Note on a low speed pump, you may see air accumulate in the pump basket, but it does not introduce bubbles into the pool.
    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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    davekippen's Avatar
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    Re: Sucking air somewhere

    Sorry, bubbles in the pump. The basket lid is clear so I can see the water flowing. It has much turbulance/bubbles and I just wasnt sure if there should be *no* bubbles seen there.
    New owner of an old in ground 18x36 rectangle pool. Solar heater, sand filter, pretty basic!

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    Mod Squad jblizzle's Avatar
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    Re: Sucking air somewhere

    Pump should not show any turbulence after you are primed. And it should not lose prime when the pump is off.
    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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    Re: Sucking air somewhere

    Quote Originally Posted by jblizzle View Post
    Bubbles where?

    The only times I can thing of where you can see bubbles in the pool returns are if you have a SWG with a short pipe run to the pool or is you have solar and the VRV valve is not fully closed. Beyond that, there should not be bubbles in the system.

    Note on a low speed pump, you may see air accumulate in the pump basket, but it does not introduce bubbles into the pool.

    Is the vrv valve the air check valve on the solar pannels? If its not closing, can it be fixed or need to be replaced?
    16x32 Concrete IG 24k Gallons
    Equipment: Carvin 525sf Cartridge Filter, Jandy Gas Heater, Vortex Solar Panels w/solar valve, 1hp Hayward Pump with 3/4 HP AO Smith 2 Speed Replacement Motor, Aquarite Saltwater Cell, Polaris 280 Dolphin Active 20 Robot
    Automation: Hayward Prologic Controller

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    Re: Sucking air somewhere

    The solar, being after the pump will have no influence on water entering the pump. OP has a suction side leak......somewhere between the skimmer(s) and the pump.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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