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Thread: Pentair Quad DE backwash install

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    Pentair Quad DE backwash install

    I just had a backwash valve installed(push pull type) on my Pentair Quad DE filter, my question is- Is it normal to hear a bubbling/gurgling sound coming from the filter after the filter has been shut off?
    I did not hear this sound before the valve was installed and just wanted to get advice whether this was normal or is there a problem. The sound is similar to when you put a water jug on an office water dispenser.




    San Marcos,California 20K Pool, Pentair DE Above Ground, Pebble Tec, 1/2 HP Whisperflow Pump 160gpm,IntelliChor SWG

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    Re: Pentair Quad DE backwash install

    Sounds like you have an air leak someplace.. It shouldn't make and air noise when the pump is off..

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    Re: Pentair Quad DE backwash install

    It is not an air sound just a sound from with in the filter...

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    Mod Squad Bama Rambler's Avatar
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    Re: Pentair Quad DE backwash install

    If there's not a leak it should sound just like it did before. Adding a backwash valve shouldn't change the way the filter operates or sounds.

    Does air get expelled into the pool when the pump starts back up? If not then maybe you just need to purge all the air out of the filter.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Pentair Quad DE backwash install

    Do you have solar or a raised spa? Could be a bad check valve.

    Check your sig also. You shouldn't be pumping 160 gpm with a 1/2 HP pump, nor will the filter likely handle it

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    Re: Pentair Quad DE backwash install

    Yes, I have solar and yes the pump does expel air when it starts up. I am just wondering why I would hear the air (bubbling sound)when the pump is off and not filtering.
    Could the air leak be inside the filter somewhere?

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    Mod Squad Bama Rambler's Avatar
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    Re: Pentair Quad DE backwash install

    Since you say that you're expelling air whenever the pump starts you have an air leak. sounds like it's probably on the waste side of things. Can you see the discharge of the waste line? It could even be sealing under pressure and leaking under suction.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Guest

    Re: Pentair Quad DE backwash install

    Is your solar on automation or is it always on? Do you have a check valve between the equipment and the solar?

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    Re: Pentair Quad DE backwash install

    The solar is a not set to come on right now because of low water temp,Sorry I do not know enough about my pool equipment to answer the other questions.
    Should I have a service company inspect it?

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    Guest

    Re: Pentair Quad DE backwash install

    I think I am close to you, jimspool. I'd be happy to come by one day (no charge and I am not looking for work!) and look at it for you. PM me if you wish.

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