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Thread: Hayward Pump Pressure

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    Hayward Pump Pressure

    My pool has been given me issues lately. When in filter position it doesnt prime properly and I see a bunch of small bubbles in the pool. But when I put it in recirculation position it works without a hitch.
    Eventually when it does work in filter mode it seems like there is no pressure going back into the pool. I check the skimmers and I dont see the water flowing into the skimmers the way it does when in recirculation mode. I read that bubbles are due to air being allowed into the pump from somewhere, but wouldnt it be the same problem in recirculation position?
    Why is the pressure so much better in one position and not the other?
    Seems like when the water has to go through the filter it gives me problems. BTW i recently had someone come out and clean the filter.
    *25000 Gallons
    *In Ground Pool
    *Vinyl Lining
    *Hayward DE Filter Model DE 4800
    *3/4 HP Pentair LA01N Booster Pump

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    Mod Squad Bama Rambler's Avatar
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    Re: Hayward Pump Pressure

    What is the filter pressure when in filter mode?
    What is the filter pressure when in recirc mode?

    Have you cleaned and lubed the pump basket o-ring?

    Believe it or not increasing the suction head (pressure) by bypassing the filter will sometimes seal off a suction side air leak. Especially if it's the pump basket lid that's leaking. It sucks it down harder and therefore seals off the leak.

    It also sounds like the filters aren't clean. There should be a little difference in pressure between filter and recirc mode but not too much.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    harleysilo's Avatar
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    Re: Hayward Pump Pressure

    Are you a handy person?

    I can't imagine paying someone to clean my filter. I have the same one you do. That said i don't think my wife would want to do it, of course i wouldn't tell her she couldn't do it, cause then of course she would prove me wrong. The grids were a little heavy to lift out, but not impossible. At any rate if it comes to the point where you suspect you need to do something with the filter i can post up detailed pictures for you.
    18'x43' Sport Pool
    19,000 Gallons Vinyl Liner 3'-3.5'-4'
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    Re: Hayward Pump Pressure

    Quote Originally Posted by Bama Rambler
    What is the filter pressure when in filter mode?
    What is the filter pressure when in recirc mode?

    Have you cleaned and lubed the pump basket o-ring?

    Believe it or not increasing the suction head (pressure) by bypassing the filter will sometimes seal off a suction side air leak. Especially if it's the pump basket lid that's leaking. It sucks it down harder and therefore seals off the leak.

    It also sounds like the filters aren't clean. There should be a little difference in pressure between filter and recirc mode but not too much.
    Filter pressure in filter mode is about 17
    Filter pressure in recirc is 0
    Pump basket is clean and lubed

    If the filter was not clean woudnt the pressure be higher?
    *25000 Gallons
    *In Ground Pool
    *Vinyl Lining
    *Hayward DE Filter Model DE 4800
    *3/4 HP Pentair LA01N Booster Pump

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    Re: Hayward Pump Pressure

    Quote Originally Posted by harleysilo
    Are you a handy person?

    I can't imagine paying someone to clean my filter. I have the same one you do. That said i don't think my wife would want to do it, of course i wouldn't tell her she couldn't do it, cause then of course she would prove me wrong. The grids were a little heavy to lift out, but not impossible. At any rate if it comes to the point where you suspect you need to do something with the filter i can post up detailed pictures for you.
    Im pretty handy. My wife was the one who paid someone to clean the filter while I was away on a business trip.
    *25000 Gallons
    *In Ground Pool
    *Vinyl Lining
    *Hayward DE Filter Model DE 4800
    *3/4 HP Pentair LA01N Booster Pump

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    harleysilo's Avatar
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    Re: Hayward Pump Pressure

    Quote Originally Posted by lokoalex
    Quote Originally Posted by harleysilo
    Are you a handy person?

    I can't imagine paying someone to clean my filter. I have the same one you do. That said i don't think my wife would want to do it, of course i wouldn't tell her she couldn't do it, cause then of course she would prove me wrong. The grids were a little heavy to lift out, but not impossible. At any rate if it comes to the point where you suspect you need to do something with the filter i can post up detailed pictures for you.
    Im pretty handy. My wife was the one who paid someone to clean the filter while I was away on a business trip.
    And by clean i assume they opened it up and cleaned the grids, then added fresh DE, vs. a backwash...
    18'x43' Sport Pool
    19,000 Gallons Vinyl Liner 3'-3.5'-4'
    SWCG and D.E. Filter
    Test Kits - Pool Calculator - Chlorine/CYA Chart - Pool School

    Secret Weapon for Pool Chemistry Testing

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    Re: Hayward Pump Pressure

    I would expect your pressure gauge to read 0 when in recirc mode being that the pressure gauge is on top of the filter and your recirc valve is bypassing the filter. In filter mode it should read around 10 to 20 but there are many things that can affect this. Did this problem surface before, after or as a result of someone cleaning the filter?
    17x37 IG vinyl, Grecian style, 20k gal, Hayward DE4800, Hayward Super Pump II 1 hp, Rainbow 320 Chlorinator, 6 Vortex 4x10 solar panels, Aquabot Turbo, Dolphin M5, loop-loc mesh cover

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