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Thread: Relief valve open, DE slipped into pool via main drains...

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    Relief valve open, DE slipped into pool via main drains...

    I went to add chlorine to my in line chlorinator and also opened the air relief at the same time. Upon returning to the pad from getting the chlorine, i glanced at the pool and saw DE oozing out of the main drains. The pump basket was also full of it and gurgling like crazy.

    I swear i had opened the air relief before but I think that was a bad idea. Not even sure why i did it, but thought that is what i always did. So should i leave air relief closed with chlorinator opened up?
    10,000 gallon
    Viking Freeform Fiberglass Inground Pool. FNS Plus DE Filter Pentair Challenger .75hp pump

    NC KANSAS44

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    Join Date
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    Re: Relief valve open, DE slipped into pool via main drains...

    What model DE filter do you have?
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

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    Melt In The Sun's Avatar
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    Oct 2009
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    Re: Relief valve open, DE slipped into pool via main drains...

    Makes sense to me. Opening the air relief valve let water flow backwards from the filter to the pool, carrying DE (plus whatever was caught in the DE) with it.
    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!
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    Re: Relief valve open, DE slipped into pool via main drains...

    Quote Originally Posted by waste
    What model DE filter do you have?
    This one.

    http://www.pentairpool.com/pdfs/FNSPlusOM.pdf
    10,000 gallon
    Viking Freeform Fiberglass Inground Pool. FNS Plus DE Filter Pentair Challenger .75hp pump

    NC KANSAS44

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