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Thread: pressure problem getting worse

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    pressure problem getting worse

    Took apart the filter. All seems good, but the pressure keeps dropping. Felt around the impeller and there doesnt seem to be anything stuck that I can tell. Should I call someone to come out and check? Pressure is down to 5 from 9 with the pump speed increased.
    18,900 Stonescapes Tahoe Blue xtra black, 8 jet Spa, Pentair inteliflo VS , Pentair FNS 60 DE, Inteliclor40, Pentair 400,000 Mastertemp heater, 3 spillovers powered by a Pentair 1 HP whisperflo pump, The pool Cleaner, 2 Intellibright color changing lights and 400 sq ft. of Heliocol roof mounted solar.

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    duraleigh's Avatar
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    Re: pressure problem getting worse

    Lower than normal pressure is almost always indicative of 1) a blockage somewhere on the suction side of you system or 2) your pump is not priming adequately.

    If you have cleared the impeller and there is no air in the pump strainer basket when the pump is running, then you have aq blockage that you must track down and find somewhere between the pump and the skimmers.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Join Date
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    Re: pressure problem getting worse

    1) Is the pump primed fully?
    2) When you pulled the grid assembly out, was it a little stuck? This sometimes causes the pump to shift it's position enough to cause an air leak.
    3) Tap/flick the pressure gauge with the back of your finger. Any change?

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    Re: pressure problem getting worse

    what is the best way to locate a blockage? pipe snake?
    18,900 Stonescapes Tahoe Blue xtra black, 8 jet Spa, Pentair inteliflo VS , Pentair FNS 60 DE, Inteliclor40, Pentair 400,000 Mastertemp heater, 3 spillovers powered by a Pentair 1 HP whisperflo pump, The pool Cleaner, 2 Intellibright color changing lights and 400 sq ft. of Heliocol roof mounted solar.

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    Mod Squad zea3's Avatar
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    Re: pressure problem getting worse

    Is it just the pressure gauge showing a drop, or does flow from the returns diminish as well? Are you able to vacuum with the low pressure reading? Are you able to run all your water features? How do they look?
    TFP Moderator
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    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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    Re: pressure problem getting worse

    Its weird- three of the 4 returns are flowing well. The pump is now running with a lot of air. The in pool cleaner is running fine. The water flow does seem to be diminished some at some spots if that makes sense.

    'Im at a loss
    18,900 Stonescapes Tahoe Blue xtra black, 8 jet Spa, Pentair inteliflo VS , Pentair FNS 60 DE, Inteliclor40, Pentair 400,000 Mastertemp heater, 3 spillovers powered by a Pentair 1 HP whisperflo pump, The pool Cleaner, 2 Intellibright color changing lights and 400 sq ft. of Heliocol roof mounted solar.

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    Melt In The Sun's Avatar
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    Re: pressure problem getting worse

    With a lot of air, you have a suction side leak. The pump basket lid and drain plug are the two most obvious places to check; make sure the threads are clean and o-rings well lubed.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
    TF Test Kits -- PoolMath -- Pool School
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    Re: pressure problem getting worse

    UPDATE- You guys rock! There were several hairs wrapped around O ring on the pump lid. Washed it real good and lubed it up and no issues any more.
    18,900 Stonescapes Tahoe Blue xtra black, 8 jet Spa, Pentair inteliflo VS , Pentair FNS 60 DE, Inteliclor40, Pentair 400,000 Mastertemp heater, 3 spillovers powered by a Pentair 1 HP whisperflo pump, The pool Cleaner, 2 Intellibright color changing lights and 400 sq ft. of Heliocol roof mounted solar.

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