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Thread: Hayward de 4820 with de inside the grids again.

  1. Back To Top    #1

    Join Date
    Mar 2012
    Location
    Eastern Long Island,New York
    Posts
    82

    Hayward de 4820 with de inside the grids again.

    It is inside the grids again. Happened when I opened the pool, and not knowing if the manifold was broken or if there was a tear in the fabric I got a great deal on a new filter. Is it possible that the multi port valve is not working right and directing the water into the grids and not outside the grids? I have the valve set to filter when adding the de. I took the filter apart because on backwash water hardly came out and what did was clean.
    Thanks
    Rich
    20 X 40 Vinyl IG 28K gallons, Heat Siphon Z700HP, Hayward 4820 DE, Hayward SP3400VSP, Jandy aquapure 1400, TFTest Kit, Pool School, Pool Calculator

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
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    Jun 2009
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    SouthWest Alabama
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    22,337

    Re: Hayward de 4820 with de inside the grids again.

    It seems unlikely but it could be plumbed backwards.
    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

  3. Back To Top    #3

    Join Date
    Mar 2012
    Location
    Eastern Long Island,New York
    Posts
    82

    Re: Hayward de 4820 with de inside the grids again.

    After completely taking grids apart, I noticed holes in the bottom of all the grids. Not to big but holes. Ordered a new set of grids and put on the other filter. Got a good deal on the grids, so I guess it turned out alright to have an extra filter.
    Thanks for suggestion
    20 X 40 Vinyl IG 28K gallons, Heat Siphon Z700HP, Hayward 4820 DE, Hayward SP3400VSP, Jandy aquapure 1400, TFTest Kit, Pool School, Pool Calculator

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