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Thread: 2 filters DE in the pool. Double trouble Puzzle

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    2 filters DE in the pool. Double trouble Puzzle

    I have a large pool with 2 pentair 2072 DE filters. They are the kind with the bottom manifold. So I have been having DE in the swimming pool issues when I clean the filters. There are no holes in the grids. The Vent tube is screened, yet the stuff still keeps pouring in.

    Very tired of this problem and cannot figure it out. I really do not want to have to take the valves apart and if I do I'd like to make sure I fix the right one. If you think it is the valves, any input on taking them apart would be appericiated. Send me your input or further questions.


    Danny
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    Re: 2 filters DE in the pool. Double trouble Puzzle

    Are the filters plumbed to the same returns and suctions or is each a separate system with separate pumps? Can you put a picture up on photobucket?

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    Re: 2 filters DE in the pool. Double trouble Puzzle

    I believe they are seperate as they each have there own heater and pump. If I was going by what I see in the equipment room, I'd say they are seperate. There is a Solar heating element that connects in somewhere. Is it possible that it gets combined under ground? I'll have photos Monday/Tuesday.

    There is also really bad suction in 2 of the skimmers.
    Silver Maple Leafs
    The Royal Canadian Mint uses the finest coin blanks in producing these coins,
    wherein The Canadian Silver Maple Leaf is used as the standard by which all
    the other silver coins are measured.

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    Mod Squad JohnT's Avatar
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    Re: 2 filters DE in the pool. Double trouble Puzzle

    Poor suction makes me wonder about an air leak. Air leaks can cause water to flow out of the pump backwards and put DE into the pool through the skimmers when the pump shuts off.
    TFP Moderator
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    Re: 2 filters DE in the pool. Double trouble Puzzle

    Of each has it's own pump, they should also have their own suction and return lines. Map which lines go to which pumps.

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    Re: 2 filters DE in the pool. Double trouble Puzzle

    I believe the filters are on the same line. I turned each pump off separately and found pressure in each Skimmer, expect SK1, and all returns except R2. These 2 points have both been having difficulties of late. They do pressurize but take awhile.

    SK1 Has been lacking pressure with either pump.

    R2 Has been showing excessive air bubbling and is the main area of discharge for DE (though I have had it come out of all returns in the past), and is the last to pressurize. Very odd that it is the last to pressurize. the bubbling occured with either pump and was nto stronger with one or the other. Could it be drawing from the backwash if the seal on the rotors has failed? It could be both rotors. They are both a ***** to move. If it was a bad seal i would see heavy water loss right? I do feel that the water loss is high but it is a 65000Gal pool in Southern CA. But still feels heavy. I think I'm going to cut the backwash piping to the drain and put a bucket under it. What do you think? What about from the solar?

    SK2 also shows a lack of pressure but being furthest away I am not surprised, though recently there has been better pressure here as well as at the auto vac connection (AV1). Possibly due to lack of pressure at SK1

    The pumps fill completely with no cavitations.

    In addition to all points having pressure with any single pump running, I was able to see DE pass from one filter to the next when I changed them individually. This happened without passing through the pool and very quickly. (I vacuumed a bunch of loose DE from the bottom of the pool today, so it was loose in the filters and was drawn from one to the other with just one pump running.)

    Photos to Photobucket
    http://s1202.photobucket.com/upload/albums/Dkoop1/

    Hope this helps. I'm begining to feel more comfortable with changing out the rotor valves if we think it is needed.

    Danny

    Thanks for your help
    Silver Maple Leafs
    The Royal Canadian Mint uses the finest coin blanks in producing these coins,
    wherein The Canadian Silver Maple Leaf is used as the standard by which all
    the other silver coins are measured.

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    Re: 2 filters DE in the pool. Double trouble Puzzle

    Posting the pics for ease of use:

    Scott











    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    Re: 2 filters DE in the pool. Double trouble Puzzle

    OK so I cut the hard line to the drain adn do not see any leakage yet. It has been a few days. There is still a lot of Gurrgling out of one of the returns and after doing a thorough vacuuming, there is still a fair amount of DE back on the bottom. Not visible until it is disturbed.
    Silver Maple Leafs
    The Royal Canadian Mint uses the finest coin blanks in producing these coins,
    wherein The Canadian Silver Maple Leaf is used as the standard by which all
    the other silver coins are measured.

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    Re: 2 filters DE in the pool. Double trouble Puzzle

    Is this a residential or commercial pool?

    Get a pool service with a blower and P-Touch to label the lines and valves.

    No suction or return lines should be shared between the pumps.

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    Re: 2 filters DE in the pool. Double trouble Puzzle

    Residential.

    What will the blower do?
    Silver Maple Leafs
    The Royal Canadian Mint uses the finest coin blanks in producing these coins,
    wherein The Canadian Silver Maple Leaf is used as the standard by which all
    the other silver coins are measured.

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    Melt In The Sun's Avatar
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    Re: 2 filters DE in the pool. Double trouble Puzzle

    Blow air through the pipes so you can see bubbles in the pool, and figure out which pipe at the pad corresponds to which line in the pool.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
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    Re: 2 filters DE in the pool. Double trouble Puzzle

    OK so I checked the dedicated pump to the solar panels and it's basket was packed full of debris. Usually this basket is clean so I didn't think to check it earlier. It is located remotely in the basement. I checked the main pump baskets and they were fine. No cracks or holes. I don't know how that much stuff could have gotten in.

    This seems to have solved the gurrgling problem, but cannot see how it would cause DE in the pool. I don't think I've gotten to the bottom of the problem yet.

    I'm still working on mappin gthe skimmers and such but as far as I can tell they really are all connected.

    Dan
    Silver Maple Leafs
    The Royal Canadian Mint uses the finest coin blanks in producing these coins,
    wherein The Canadian Silver Maple Leaf is used as the standard by which all
    the other silver coins are measured.

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    Re: 2 filters DE in the pool. Double trouble Puzzle

    Normally, pumps don't share suction or return ports.

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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