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Thread: Filter clogged? HELP!

  1. Back To Top    #1

    Join Date
    Jun 2008
    Location
    Wichita, KS
    Posts
    22

    Filter clogged? HELP!

    Last night, I noticed that the return flow was somewhat diminished, so I decided to backwash my 200# Hayward sand filter with spider valve (my pressure gauge is broken and I haven't replaced it yet ). I set the valve to BACKWASH, turned on the pump, and nothing happened. I then set the valve to RINSE just to see if it would start flowing and it did. I was running out of daylight at this point so I came back to it this morning.

    Now, I can't get any flow with the valve placed in the BACKWASH, FILTER, or RINSE locations. I get good flow with it in RECIRCULATE, though, which leads me to believe this is a filter or valve issue. Does anybody have any ideas where I need to start looking?
    10k gal. IG vinyl, 1 hp pump, 200 lb sand filter, solar panels & cover

  2. Back To Top    #2

    Join Date
    Mar 2007
    Location
    Coastalish 'down easter'
    Posts
    4,160

    Re: Filter clogged? HELP!

    Welcome to TFP!!

    I would open the filter and check the sand for being 'impacted'

    Can you tell us what chems you've been using? Unfortunately, some chems can 'gum' up a sand filter
    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

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

  3. Back To Top    #3

    Join Date
    Jun 2008
    Location
    Wichita, KS
    Posts
    22

    Re: Filter clogged? HELP!

    Thanks for the welcome! I've been lurking here for a while now, though.

    I opened up the filter last night to check exactly what you suggested, and the sand seemed fine. I did find the culprit, though. The previous owners of the pool had, for some unknown reason, placed a cap in the pipe on the pressure side inside the filter. It must have been blown off when started for normal operation and drawn in when I attempted to do the backwash. You can image what I was saying to myself when I found this...

    Thanks for the help!
    10k gal. IG vinyl, 1 hp pump, 200 lb sand filter, solar panels & cover

  4. Back To Top    #4

    Join Date
    Mar 2007
    Location
    Coastalish 'down easter'
    Posts
    4,160

    Re: Filter clogged? HELP!

    Very happy to have been able to help (though leaving a %&**^$% cap in there wouldn't have occurred to me :P )

    I hope the rest of your season is trouble free and you get lots of use out of your pool
    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

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

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