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Thread: Circulation trouble

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    Circulation trouble

    Hi all,

    I have a HayWard DE filter. that's giving me trouble.

    I just disassembled it and removed all the grids and all the grids and reloaded it with DE.

    Started off at 12 PSI this morning, and by the end of the day it was at 25 and the flow was so log my SWG was giving a no water error.

    This is the second time I've cleaned the DE grids in 2 weeks because of the same issue.

    Any ideas?

    Thx
    15,000Gal AG , Plaster, DE, 1.5HP, Compupool SWG

  2. Back To Top    #2
    linen's Avatar
    Join Date
    Jul 2010
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    Twin Cities, MN
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    8,649

    Re: Circulation trouble

    Welcome to tfp, ggenovez

    Sounds like your filter may be catching something from your water. What does your water look like?

    Please post a full set of test results. See this post: http://www.troublefreepool.com/what-...ns-t10341.html
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    JasonLion's Avatar
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    May 2007
    Location
    Silver Spring, MD
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    37,879

    Re: Circulation trouble

    Welcome to TFP!

    Having a DE filter pressure go up very quickly is common when you open first thing in the spring. The water can accumulate a fair bit of debris, even if it looks very clean. The DE filter catches that debris very effectively, so the pressure goes up fairly quickly.

    This can also happen if there is too much DE in the filter.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  4. Back To Top    #4

    Re: Circulation trouble

    Thank you for the warm welcomes

    So is it just a matter of backflushing until the pressure stabilizes?

    FAC 1
    TAC 1
    PH 8 * just added 4 cups acid
    ch 350


    Pool has recently turned green because of the lack of filtering and SWG not getting enough water.

    It was clear until I did my recent grid cleaning, but I've noticed dirt getting through it. So I might have a cracked manifold or a hole in a grid. I'll hopefuly have time today to take it apart and see what is going on.
    15,000Gal AG , Plaster, DE, 1.5HP, Compupool SWG

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Circulation trouble

    Yes, keep an eye on the pressure and backwash or clean out as needed. After a while things will return to normal, sooner if you don't have algae, possibly a while if you do have algae.

    If you can't be around to watch the pressure it might be better to switch the main valve to recirculate (if yours has that option), that will keep the SWG happy and keep water moving with no risk of the pressure going up. But you will need to be around to pay attention to the filter at some point.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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