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Thread: New filters and new guage for cartridge filter what should be the psi?

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    New filters and new guage for cartridge filter what should be the psi?

    Installed new pressure guage and changed out filters after getting the pool clean with the old filters. Old ones were at 2psi and so are the new ones? What should they normally be at? Waters flowing cleaned pump basket and skimmer not sure why its so low.

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    JasonLion's Avatar
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    Re: New filters and new guage for cartridge filter what should be the psi?

    The normal filter pressure varies from system to system, depending a a large number of details. You need to figure out what is normal for your system.

    2 psi is at the low end of the range for normal pressures, it could be normal or something might be wrong, we have no way of telling without a lot more detail about your equipment setup, pipe run length, pipe size, pump size, etc.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: New filters and new guage for cartridge filter what should be the psi?






    That's the way i've been running it, its a 1hp pump. So far ran for 24hrs hasn't changed the pressure one bit.

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    Mod Squad jblizzle's Avatar
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    Re: New filters and new guage for cartridge filter what should be the psi?

    Do you feel strong water movement in the pool? Did you see if there was a blockage in the passage for the gauge?

    Please add your pool and equipment details to your signature as described HERE as it will help us help you.
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    Re: New filters and new guage for cartridge filter what should be the psi?

    strong water movement yes. Added signature as well.
    cleaned the whole filter assembly and the guage is brand new. maybe some teflon tape got into where the pressure is taken?

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    Mod Squad woodyp's Avatar
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    Re: New filters and new guage for cartridge filter what should be the psi?

    I'd certainly ignore that Start and Clean Filter lettering. Never seen that before.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
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    pwrstrk's Avatar
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    Re: New filters and new guage for cartridge filter what should be the psi?

    I would also ignore the start and clean filter lettering. We recommend cleaning the filter when pressure rises 25% above your clean pressure reading.
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: New filters and new guage for cartridge filter what should be the psi?

    So back to the original question is that pressure normal?
    16k gallons
    IG "roman style" plaster
    Pentair CCP420 Clean and Clear Plus Pool and Spa Cartridge Filter, 150-GPM
    1hp pump
    Built in 2000

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    Mod Squad jblizzle's Avatar
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    Re: New filters and new guage for cartridge filter what should be the psi?

    Maybe ........... You feel strong flow so nothing appears to be clogged, but that is surprisingly low.
    Jason, TFP Moderator
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    sargent's Avatar
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    Re: New filters and new guage for cartridge filter what should be the psi?

    Mine is also that low, but I have three returns and one is missing an eyeball right now. If I shut off flow to that return, my pressure goes up quite a bit.

    How many returns do you have? Are any missing their eyeballs?


    14k gal IG vinyl, Jandy Flopro 1 hp up-rated, 2 spd pump, Hayward 325 sq ft cartridge filter, Circupool Si-40 SWCG

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    Re: New filters and new guage for cartridge filter what should be the psi?

    2 returns not sure about what an eyeball is nothing is covering them..
    16k gallons
    IG "roman style" plaster
    Pentair CCP420 Clean and Clear Plus Pool and Spa Cartridge Filter, 150-GPM
    1hp pump
    Built in 2000

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    Mod Squad jblizzle's Avatar
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    Re: New filters and new guage for cartridge filter what should be the psi?

    Are the returns just open holes? Or is there an "eyeball" inside that allows you to direct the flow?
    Jason, TFP Moderator
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    Re: New filters and new guage for cartridge filter what should be the psi?

    I don't think the gauge is reading correctly. If you have strong flow and the pressure is actually that low, then the pump would be in cavitation. Plus the plumbing in the pictures does not appear to be a low head loss design although I cannot see all of the pipes. If you have a second gauge, you can put it on the pressure side of the pump drain plug to confirm.

    What is the pump model #?
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Re: New filters and new guage for cartridge filter what should be the psi?

    Open holes on returns i'll get a pump model number in a few hours when I get back.
    16k gallons
    IG "roman style" plaster
    Pentair CCP420 Clean and Clear Plus Pool and Spa Cartridge Filter, 150-GPM
    1hp pump
    Built in 2000

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    Re: New filters and new guage for cartridge filter what should be the psi?

    Couldn't figure out the model number off pump its a 1hp here pics of pump and setup. Have 4 return holes. 2 have eyeballs 2 are empty



    16k gallons
    IG "roman style" plaster
    Pentair CCP420 Clean and Clear Plus Pool and Spa Cartridge Filter, 150-GPM
    1hp pump
    Built in 2000

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    mas985's Avatar
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    Re: New filters and new guage for cartridge filter what should be the psi?

    That is a Challenger 1 HP full rated pump. The run out operating point is around 83 GPM @ 40' of head so head loss cannot be less than 40' of head.

    If the pressure is only 2 PSI, that is only 5' of head which means that the suction would have to have at least 35' of head but that would put the pump into cavitation. Something must be wrong with the gauge. Remove the gauge and make sure the hole in the end of the gauge is not plugged.

    If flow rate was reduced as well, I might suspect a blocked impeller.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Re: New filters and new guage for cartridge filter what should be the psi?

    Ok thanks will remove it tommorow and update this.
    16k gallons
    IG "roman style" plaster
    Pentair CCP420 Clean and Clear Plus Pool and Spa Cartridge Filter, 150-GPM
    1hp pump
    Built in 2000

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    Re: New filters and new guage for cartridge filter what should be the psi?

    Removed guage and checked to restrictions there were none. Wrapped teflon and reinstalled still same 2psi. My skimmer basket isn't working properly its not sucking in the water My neighbors grass got into pool and it goes into the skimmer and then goes right back out. Isn't that one of the signs that something is wrong?
    16k gallons
    IG "roman style" plaster
    Pentair CCP420 Clean and Clear Plus Pool and Spa Cartridge Filter, 150-GPM
    1hp pump
    Built in 2000

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    Charlie_R's Avatar
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    Re: New filters and new guage for cartridge filter what should be the psi?

    You could take a hose and rag stuffed into the suction line where it enters the pump and see if anything comes out into the skimmer.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

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    Re: New filters and new guage for cartridge filter what should be the psi?

    I think the line is clogged somehow since reading online about ubclogging it said that excess air would be in the filter. Every other day I open the relief valve on filter to make sure water comes out and it does after about a minute before that it is a blast of air

    So I take out skimmer basket on pump hook up a garden hose onto the hose part and stuff it into suction line with a rag?

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