Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 12 of 12

Thread: decrease filter pressure

  1. Back To Top    #1

    decrease filter pressure

    My girlfriend decided to vacuum the last of debris in the deep end which included some leaves and pine needles. I told her not to but its her pool. Now we have lost atleast 10 LBS PSI and water flow coming out of jets is lower than before her escapade. Where and how do i find clog? I tried backflushing a little. Not helping....

    Thanks in advance
    In Ground 20000 gallon vinyl basic rentangular with Hayward filter and ancient looking piping system. Cleaned by a mid 2000's Polaris (jose) built in 90's I assume nice to hang out during summertime with the fiance

  2. Back To Top    #2

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,085

    Re: decrease filter pressure

    The clog is somewhere between the skimmer and the pump's impeller. Can't help other than that.....you'll have some detective work to do.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: decrease filter pressure

    Kill the pump, empty out the pump strainer basket, and then poke around and feel for a wad of pine needles stuck in the impeller. You might even try sticking a hose in the pump inlet and try pushing whatever's stuck in the pipes backwards out to the skimmer.
    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.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  4. Back To Top    #4

    Re: decrease filter pressure

    oops sorry didnt see last post. Hate to ask but where is the pump impeller?
    Last edited by detsports; 05-08-2014 at 08:01 AM. Reason: .
    In Ground 20000 gallon vinyl basic rentangular with Hayward filter and ancient looking piping system. Cleaned by a mid 2000's Polaris (jose) built in 90's I assume nice to hang out during summertime with the fiance

  5. Back To Top    #5
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: decrease filter pressure

    Quote Originally Posted by detsports View Post
    oops sorry didnt see last post. Hate to ask but where is the pump impeller?
    It is hidden between the pump basket and the pump motor. It's the fan blade, more or less. You'll have to probe with your fingers. In extreme cases, you'll have to separate the pump from the motor to dig out the debris. Before you do that, ensure the pipes are flowing.
    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.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  6. Back To Top    #6

    Re: decrease filter pressure

    my hand cant fit to reach impeller do i have to take apart?? to see if its in impeller or try the hose deal first i guess huh?

    - - - Updated - - -

    your one step ahead of me. It seems like there is good water flow but i guess do the hose thing first?
    In Ground 20000 gallon vinyl basic rentangular with Hayward filter and ancient looking piping system. Cleaned by a mid 2000's Polaris (jose) built in 90's I assume nice to hang out during summertime with the fiance

  7. Back To Top    #7
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: decrease filter pressure

    Quote Originally Posted by detsports View Post
    my hand cant fit to reach impeller do i have to take apart?? to see if its in impeller or try the hose deal first i guess huh?

    - - - Updated - - -

    your one step ahead of me. It seems like there is good water flow but i guess do the hose thing first?
    Yes. Because you'll need to replace the gasket between the two halves of the pump housing if you start dismantling it. And you'll have wasted the money for it if it turns out the clog wasn't in there, but in the pipe. Page 23 is the beginning of instructions for disassembly, page 26 has a good exploded view of your pump. The impeller is part 17, the gasket is 30.

    So stick a hose in the inlet pipe from the inside, wrap it with a rag to seal it, clamp it good with your hands, and have a helper turn on the water and go watch inside the skimmer. Hopefully you get lucky.
    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.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  8. Back To Top    #8

    Re: decrease filter pressure

    so if there is water movement coming out of skimmer then its in the impeller most likely...???? if no water movement then its a clogged line? then i need to push hose through the pipe to try and break up clog? Do i have it right?
    In Ground 20000 gallon vinyl basic rentangular with Hayward filter and ancient looking piping system. Cleaned by a mid 2000's Polaris (jose) built in 90's I assume nice to hang out during summertime with the fiance

  9. Back To Top    #9
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: decrease filter pressure

    Quote Originally Posted by detsports View Post
    so if there is water movement coming out of skimmer then its in the impeller most likely...???? if no water movement then its a clogged line? then i need to push hose through the pipe to try and break up clog? Do i have it right?
    No. don't try pushing it through with the hose, try blasting it loose with water. If you have a good seal with the rag and the hose is on full blast, you ought to see and feel a strong flow coming up from the bottom of the skimmer, hopefully with a bunch of leaves and pine needles in it!
    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.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  10. Back To Top    #10

    Re: decrease filter pressure

    ok good deal you think its ok to run pump for now till i get a chance to do this with the person who screwed it up. the pump does not feel like it is running hot.
    must be a minor clog . what ya think?
    In Ground 20000 gallon vinyl basic rentangular with Hayward filter and ancient looking piping system. Cleaned by a mid 2000's Polaris (jose) built in 90's I assume nice to hang out during summertime with the fiance

  11. Back To Top    #11
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: decrease filter pressure

    If you have flow in the returns and the pump basket isn't cavitating, run it. Just check it periodically in case it is something in the pipe and it decides to shift and block things completely. If you have to leave to go to work, shut the thing off.
    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.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  12. Back To Top    #12

    Re: decrease filter pressure

    ok everything seems to running normally just 10 psi down from before the GF decided to get a little rambunctious.
    In Ground 20000 gallon vinyl basic rentangular with Hayward filter and ancient looking piping system. Cleaned by a mid 2000's Polaris (jose) built in 90's I assume nice to hang out during summertime with the fiance

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •