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Thread: De in pump basket when off

  1. Back To Top    #1

    Join Date
    May 2016
    Location
    Princeton,NJ
    Posts
    12

    De in pump basket when off

    I replaced the filter pressure relief valve and gauge due to corrosion inside gauge and leak from stem. At the same time i decided to clean filter grid and recharge de.

    All appeared ok after i was done until i noticed when i closed the pressure relief valve when pump was turned on a cloud of grey shot into the pool from return!

    Next day i took filter apart and checked grids. All are good. Manifold wasnt seated apl the way down on the standpipe so i removed assembly and lubed o ring on standpipe. I also lube pump lid o ring again.

    Today i had to buy the de to recharge so i turned pump on and as expected there was still de in the return lines so i let that flush out before recharging.

    I made the mistake of doing it too fast at first as i noticed it spew back into the pool. So i waited a few minutes then did it slowly and watched each scoop to make sure it didnt return to pool.

    I let the pump run for 5hrs and turned it off to observe my fixes. The pump held water in the basket and a few min later a cloud of de mixed in.

    So...could it just be a bad relief valve? Thats the only major thing i repaced. I dont hear air when pump is off.

    I did notice a small leak at the swg unions while it ran.

    This is becoming a disaster for me, im not ready for a ccp filter yet but leaning towards one next year.
    IG 20k gal, Pentair FNS Plus 48 DE, Pentair whisper flo 3/4HP, Pentair SWG, Vinyl liner, public water

  2. Back To Top    #2

    Join Date
    May 2016
    Location
    Princeton,NJ
    Posts
    12

    Re: De in pump basket when off

    Well this may not be an issue anymore. The new one is small bubbles in return. Going to replace o rings in swg unions that i know leak.

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