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Thread: Lost pressure

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    Lost pressure

    Hey all.. my pool generally runs 12-18PSI.. I noticed my heater shows LO (not enough flow I am guessing) and the PSI gauge on the cart filter canister is only readying about 3PSI. I did buy a riding mower recently and accidently blew a bunch of grass clippings in the pool.. cleaned out skimmers and pump filter basket as well as swapped out the four filter cartridges with some spares I ahd.. there were no clippings in the cartridge filters, but they were a bit slimy. I am at a loss. Any idea what else might be the culprit?

    The water flow into the pump seems OK I think.. see pic.



    2003 Coleman MAAX Collection Model 706 - 400gal

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    Isaac-1's Avatar
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    Re: Lost pressure

    My first guess is a clogged suction line
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    Re: Lost pressure

    Quote Originally Posted by Isaac-1
    My first guess is a clogged suction line
    Kinda what I was thinking.. is this a DIY fix?
    2003 Coleman MAAX Collection Model 706 - 400gal

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    mas985's Avatar
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    Re: Lost pressure

    Quote Originally Posted by jjdurrant
    I did buy a riding mower recently and accidently blew a bunch of grass clippings in the pool.
    The clippings might have gotten stuck in the impeller. Check the impeller inlet first to see if you can pull anything out but you might need to take the pump apart.
    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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    nedchavez's Avatar
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    Re: Lost pressure

    The grass clippings could make it through the skimmer basket and the pump basket and also clog the pump impeller.

    Edit: typing along with you MAS
    16' x 32' IG vinyl liner w/ hopper bottom (12,500 gal), Single-speed 1 HP Sta-Rite pump, and 300# Cristal-Flo sand filter, TF-100 test kit

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    Re: Lost pressure

    Here's another idea. The grass "may" have gotten by the pump basket and gotten wound around the impeller of the pump. Kill all power to the pump then remove the pump strainer. Reach in with your fingers and feel if there is anything around the impeller. If so, just keep pulling it out and wash it all out with a garden hose. Replace all the hardware and give it a whirl. Has worked for me several time with pine needles and for some others as well. GOOD LUCK!!!
    Sami
    16,000 IG, SWG, 175 sq. ft. cartridge, 1.5 hp pump, vinyl, Charlotte NC
    TF-100, Pool School, Pool-Calc

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    Re: Lost pressure

    LOL...fast responses huh???
    16,000 IG, SWG, 175 sq. ft. cartridge, 1.5 hp pump, vinyl, Charlotte NC
    TF-100, Pool School, Pool-Calc

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    nedchavez's Avatar
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    Re: Lost pressure

    Lol. Sounds like MAS, samiguy, and I have all had the same problem at one time.
    16' x 32' IG vinyl liner w/ hopper bottom (12,500 gal), Single-speed 1 HP Sta-Rite pump, and 300# Cristal-Flo sand filter, TF-100 test kit

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    Re: Lost pressure

    Thanks guys.. I verified is wasn't a suction line as I am able to draw plenty of water from each one at a time. I am up to 5psi.. I will check the impeller and report back.
    2003 Coleman MAAX Collection Model 706 - 400gal

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    Re: Lost pressure

    Oh yes I have!! I've got $ .05 that it's clipping on/in the impeller.......
    16,000 IG, SWG, 175 sq. ft. cartridge, 1.5 hp pump, vinyl, Charlotte NC
    TF-100, Pool School, Pool-Calc

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    Re: Lost pressure

    Consider using a skimmer sock. I only clean out pump basket once a season.

    Gary R
    18 X 32 Oval Inground Gunite Pool 20,000 Gallons Epoxy Painted in 2012
    Tagelus Sand Filter TA 60 D/TA 60-Hayward Super Pumps 1 H.P.
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    Solar Cover-Rocky's Pool Cover Reel-Intermatic T104R Timer
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    pwrstrk's Avatar
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    Re: Lost pressure

    I use skimmer socks all the time, they work great.
    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: Lost pressure

    I do as well.. but the clippings were just too many!
    2003 Coleman MAAX Collection Model 706 - 400gal

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    Re: Lost pressure

    Thanks guys.. it was indeed grass clippings in the impeller. Sprayed everything out with garden house and all is well again!
    2003 Coleman MAAX Collection Model 706 - 400gal

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    pwrstrk's Avatar
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    Re: Lost pressure

    Good job !!
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

  16. Back To Top    #16

    Re: Lost pressure

    Ah yes......another winner!!!!!
    (I'll take my nickel now!)LOL...
    Sami
    16,000 IG, SWG, 175 sq. ft. cartridge, 1.5 hp pump, vinyl, Charlotte NC
    TF-100, Pool School, Pool-Calc

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