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Thread: Where did the pressure go?

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    Where did the pressure go?

    I cleaned my de filter this weekend. Reassembled, back washed, purged air filter, and the pump strainer basket has no visible air bubbles. But I now have air in 2 of my return jets, my three scupper water features dont work and there is not enough line pressure to operate the booster pump for the Polaris. Before cleaning i did notice a little reduction in flow, hence the cleaning, but everything worked great before cleaning the de filter. I disassembled the de filter to double check the manifold and grids were seated correctly twice, and they were. Pupmp seems to be pulling in water OK and there are no visible air bubbles in the strainer basket. PSI on the filter reads btw 4-6 lbs. Any ideas as to what could cause the loss of pressure to filter and booster pump for the Polaris?

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    Richard320's Avatar
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    Re: Where did the pressure go?

    Quote Originally Posted by KSS View Post
    I cleaned my de filter this weekend. Reassembled, back washed, purged air filter, and the pump strainer basket has no visible air bubbles. But I now have air in 2 of my return jets, my three scupper water features dont work and there is not enough line pressure to operate the booster pump for the Polaris. Before cleaning i did notice a little reduction in flow, hence the cleaning, but everything worked great before cleaning the de filter. I disassembled the de filter to double check the manifold and grids were seated correctly twice, and they were. Pupmp seems to be pulling in water OK and there are no visible air bubbles in the strainer basket. PSI on the filter reads btw 4-6 lbs. Any ideas as to what could cause the loss of pressure to filter and booster pump for the Polaris?
    Maybe you ripped an O-ring in the backwash valve and it's leaking to waste?
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
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    Divin Dave's Avatar
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    Re: Where did the pressure go?

    Do you have a variable speed pump, and somehow it got on a really low speed?
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

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    Re: Where did the pressure go?

    Quote Originally Posted by Richard320 View Post
    Maybe you ripped an O-ring in the backwash valve and it's leaking to waste?

    Tried everything but that.
    Will check it out. Thanks

    - - - Updated - - -

    Quote Originally Posted by Divin Dave View Post
    Do you have a variable speed pump, and somehow it got on a really low speed?
    No its a single speed Hayward Tri-Star. My pool is pretty new and i have not had to do much to it up to this point. That is what is worrisome about this situation.

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    Re: Where did the pressure go?

    Ok, update on the problem. The loss of pressure was being caused by the pressure gauge on my Hayward DE filter.
    Never in a million would I have guessed that. Put new gauge on and the pressure is back up.

    Wanted to share the resolution for others.

  6. Back To Top    #6
    Divin Dave's Avatar
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    Re: Where did the pressure go?

    well there ya go!

    thanks for the update!
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

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