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Thread: Pressure building

  1. Back To Top    #1

    Join Date
    Apr 2015
    Location
    Charlotte, NC
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    19

    Question Pressure building

    This is no doubt a 101 question, sorry. My pool was installed just last year. The pressure always used to go back down to about 13 PSI when I'd backwash. This year, I can't get it below about 18 PSI. Is this normal? I assume there's junk in there I can't get out with backwashing; just want to be sure. Today I ran the backwash longer than usual (several minutes), and turned the pump off/on several times to try jarring junk free. Still at ~18 PSI.
    10,000-gallon inground pool, Jet Black PebbleTec / plaster
    Hayward S244S Sand Filter
    Hayward Super Pump, 2 HP
    Hayward AquaRite AQR9 / T-CELL-9 ECG
    Polaris 360

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    Join Date
    Aug 2010
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    Dallas, TX
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    4,052

    Re: Pressure building

    Could be as simple as a bad gauge. I've had to replace one before. They are only about $5 if I remember right.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    Mod Squad jblizzle's Avatar
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    May 2010
    Location
    Tucson, AZ
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    37,389

    Re: Pressure building

    I would not buy a junk pressure gauge. The glycerin ones from tftestkits are really nice and not much more than the regular ones you find locally.

    You could also try Deep Cleaning your Sand Filter
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    Join Date
    Apr 2015
    Location
    Charlotte, NC
    Posts
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    Re: Pressure building

    Thank you. It's such a relief getting responses from people who are nice. Seriously.

    Unrelated question: I constantly find sand in the pool. Mainly in the automatic cleaner's bag (Polaris). Not a huge amount, maybe a handful of sand every couple weeks. Is this normal? The contractor said it was, but I've spent a year wondering if they broke one or more laterals...
    10,000-gallon inground pool, Jet Black PebbleTec / plaster
    Hayward S244S Sand Filter
    Hayward Super Pump, 2 HP
    Hayward AquaRite AQR9 / T-CELL-9 ECG
    Polaris 360

  5. Back To Top    #5

    Join Date
    Aug 2010
    Location
    Dallas, TX
    Posts
    4,052

    Re: Pressure building

    I get a lot of sand in my robot, from it blowing into the pool from the air. If you think you have a problem, turn off the pump, wait about 30 minutes, then turn it on while someone holds a sock over a return. That'll tell you if it is coming from the filter.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
    If TFP has helped you, please click to SUPPORT TFP!

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