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Thread: System psi?

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    Join Date
    Jul 2015
    Location
    Tampa, FL
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    18

    System psi?

    Greetings all,

    Spent the last week replacing this and that on the pool and just received a new psi gauge to replace the old one - cracked and unreadable - on my Hayward Star Clear Plus C900 cartridge filter. After replacing the gauge, I restarted the pump, bled out the air, checked for leaks, and then let it run for about 10 minutes before returning to check the psi...which was read a whopping 2.5psi.

    Prior to replacing the gauge, I swapped the cartridge filter for a brand new one. That said, I am thinking I should be seeing something between 10-25psi, but I thought I would run it by the forum in case my expectations were off base. Water is cycling though the system (water feature and return both have decent flow). Although it's not so much on the topic, I was planning on slamming this weekend, and would like to get everything working right/optimized before I start.

    20 minutes in and still steady at 2.5...any recommendations?

    Wade
    10,000 Gallon Pebble Tec
    Hayward Star-Clear Plus C900 cartridge filter
    Hayward 1.5 HP pump
    Pool is filled from city water

  2. Back To Top    #2
    Mod Squad pooldv's Avatar
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    Aug 2012
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    DFW, TX
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    23,998

    Re: System psi?

    There is no normal PSI, but that is pretty low. Do you have a 2 speed pump? If yes, check pressure on high. If no, then you have an efficient plumbing set up. As long as flow is good at the returns you are good.
    TFP Moderator
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Join Date
    Jun 2014
    Location
    Roseville, CA
    Posts
    341

    Re: System psi?

    My Hayward with a new filter runs ~ 7 - 8 psi without the solar panels on.

    I had a cracked pre-filter strainer and it let small leaves to get in the pump and clog it. You might want to check that to be sure.
    SWG: CircuPool (May 2014) SI30+Plus; 3000ppm seems ideal;
    My Ideal Specs:
    FC 5; PH 7.4-7.6; TA 90; CH 350; CYA 75; = SI ~ 0.19
    14,000 gal, in ground, plaster, Cartridge filter, Borates
    TAYLOR K - 2006

  4. Back To Top    #4

    Join Date
    Jul 2015
    Location
    Tampa, FL
    Posts
    18

    Re: System psi?

    Looks to be a single speed (Hayward SP3007X10AZ - Model 1081 1.5 HP Motor). Flow looks good to me, and I do like the sound of "efficient"...definitely don't want to fix something that's not broken. Thanks for the reply pooldv!

    - - - Updated - - -

    Will take a look just to make sure...thanks for the recommendation Chuckiechan.
    10,000 Gallon Pebble Tec
    Hayward Star-Clear Plus C900 cartridge filter
    Hayward 1.5 HP pump
    Pool is filled from city water

  5. Back To Top    #5

    In the Industry

    duraleigh's Avatar
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    Apr 2007
    Location
    Sebring, Florida
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    30,084

    Re: System psi?

    Is their air sloshing around in the pump strainer basket?

    Is there a chance you used teflon tape on the psi gauge and partially blocked the opening?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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