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Thread: Pressure in DE filter is up but no backwash.

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    Water_man's Avatar
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    Jun 2008
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    Pressure in DE filter is up but no backwash.

    Hi all,

    I'm in the midst of clearing my green swamp and the DE filter's pressure
    goes up intermittently so I have to backwash frequently.
    Needless to say the pump works 24/7.
    Suppose the pressure goes up by at least twenty and it's night time.
    What can happen if the pump continues to work without backwash?
    Please note equip. detail in the sig.
    This is my ticket for Heaven (when all's working..) :
    22k Gal gunite IGP, 38 SF Anthony DE filter, 1 HP Hayward Super Pump
    380k BTU Raypak Natural Gas Heater (Model RP405A) and solar cover
    8 gal Liquidator w/ 12% bleach, Dolphin Diagnostic Advantage robotic cleaner. 3800 ppm salt, 50 ppm borates.

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    Mod Squad JohnT's Avatar
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    Re: Pressure in DE filter is up but no backwash.

    When you can't be there to tend the pool, run the filter on recirculate if that's an option. Filter when you can watch it.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    Water_man's Avatar
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    Jun 2008
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    Brookline, MA
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    Re: Pressure in DE filter is up but no backwash.

    It's old so it's primitive. Either normal circulation through the pool or backwash.
    This is my ticket for Heaven (when all's working..) :
    22k Gal gunite IGP, 38 SF Anthony DE filter, 1 HP Hayward Super Pump
    380k BTU Raypak Natural Gas Heater (Model RP405A) and solar cover
    8 gal Liquidator w/ 12% bleach, Dolphin Diagnostic Advantage robotic cleaner. 3800 ppm salt, 50 ppm borates.

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    Mod Squad Bama Rambler's Avatar
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    Jun 2009
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    Re: Pressure in DE filter is up but no backwash.

    It depends on how long you can't be there. If it's overnight I'd let it run. It shouldn't damage the pump or filter because it's not going to completely stop the flow. If it's several days I'd shut it off and deal with it when I got back.
    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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