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Thread: Pentair FNS Plus manifold popping off standpipe

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  1. 08-31-2014 10:56 AM #1
    RobTom
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    Unhappy Pentair FNS Plus manifold popping off standpipe

    Inside my FNS Plus 60 DE filter, the entire grid assembly is popping off the top of the standpipe. All the DE is is then washing into the pool. I've recently replaced the o-ring to no effect. Any ideas as to what might be causing this and how to fix it?
  2. 08-31-2014 12:01 PM #2
    CarlD's Avatar
    CarlD
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    Default Re: Pentair FNS Plus manifold popping off standpipe

    Hi and Welcome.

    But I'm not a DE filter guy so all I can guess is your filter is broken. Repairable? No idea. Sorry.
    Carl
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