Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: Pulsating returns

  1. Back To Top    #1
    Hurricane Gio's Avatar
    Join Date
    Apr 2010
    Location
    Coral Gables, FL
    Posts
    197

    Pulsating returns

    When my pump is in low speed, one of the returns is kinda pulsating and making tiny bubbles at the surface. When is Hihg-speed mode its fine, but the floor returns start to pulsate.

    Its a new pool and will call the builder on Thursday to check it out.
    8,000 Gal, 11 x 26.8ft Shotcrete Pool with "Cool Blue" Diamond Brite by ESSIG Pools with Artistic Pavers Deck
    Goldine AQL-PLUS w/Aqua Pod, Aqua-Rite T-CELL-15 SWG, Pentair WhisperFlo High Performance 1.5HP, 2 speed pump, Pentair IntelliBrite,
    Pentair 100sqft Cartridge Filter, 6 Pool returns, Skimmer and 2 Anti-Vortex Main Drains
    Pool's completed build 2/2010

  2. Back To Top    #2

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

    Re: Pulsating returns

    Welcome to TFP!!

    My quick analysis is that you have an issue with the pump lid. (on low, there's not enough suction to fully seal it which is corrected when high kicks in )


    Of course, there could be something else...
    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
    Hurricane Gio's Avatar
    Join Date
    Apr 2010
    Location
    Coral Gables, FL
    Posts
    197

    Re: Pulsating returns

    Quote Originally Posted by waste
    Welcome to TFP!!

    My quick analysis is that you have an issue with the pump lid. (on low, there's not enough suction to fully seal it which is corrected when high kicks in )


    Of course, there could be something else...
    Thanks, I checked it. Its seems to be sealed tight as ****.
    8,000 Gal, 11 x 26.8ft Shotcrete Pool with "Cool Blue" Diamond Brite by ESSIG Pools with Artistic Pavers Deck
    Goldine AQL-PLUS w/Aqua Pod, Aqua-Rite T-CELL-15 SWG, Pentair WhisperFlo High Performance 1.5HP, 2 speed pump, Pentair IntelliBrite,
    Pentair 100sqft Cartridge Filter, 6 Pool returns, Skimmer and 2 Anti-Vortex Main Drains
    Pool's completed build 2/2010

  4. Back To Top    #4
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Pulsating returns

    Pulsing is usually caused by air getting into the pump strainer basket relatively slowly. The lid of the strainer basket is the first place to look, but also check that the water level is high enough on the skimmer(s) that no air is being drawn down the vortex. If that is alright, you need to look for somewhere else that air might be getting into the plumbing between the skimmer(s)/main drain and the pump.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  5. Back To Top    #5
    Hurricane Gio's Avatar
    Join Date
    Apr 2010
    Location
    Coral Gables, FL
    Posts
    197

    Re: Pulsating returns

    Quote Originally Posted by JasonLion
    Pulsing is usually caused by air getting into the pump strainer basket relatively slowly. The lid of the strainer basket is the first place to look, but also check that the water level is high enough on the skimmer(s) that no air is being drawn down the vortex. If that is alright, you need to look for somewhere else that air might be getting into the plumbing between the skimmer(s)/main drain and the pump.
    Thanks Jason. I checked all that and nothing. I will contact the builder to have them look at it.
    8,000 Gal, 11 x 26.8ft Shotcrete Pool with "Cool Blue" Diamond Brite by ESSIG Pools with Artistic Pavers Deck
    Goldine AQL-PLUS w/Aqua Pod, Aqua-Rite T-CELL-15 SWG, Pentair WhisperFlo High Performance 1.5HP, 2 speed pump, Pentair IntelliBrite,
    Pentair 100sqft Cartridge Filter, 6 Pool returns, Skimmer and 2 Anti-Vortex Main Drains
    Pool's completed build 2/2010

  6. Back To Top    #6

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

    Re: Pulsating returns

    Of course, I overlooked that its a new pool and the PB should diagnose and correct the issue


    Please let us know what Mr. PB says
    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!)

  7. Back To Top    #7
    Hurricane Gio's Avatar
    Join Date
    Apr 2010
    Location
    Coral Gables, FL
    Posts
    197

    Re: Pulsating returns

    Quote Originally Posted by waste
    Of course, I overlooked that its a new pool and the PB should diagnose and correct the issue


    Please let us know what Mr. PB says
    Well, they said it could be a few things:

    A clog somewhere in the pipes

    Chlorine being generated by the SWG (Yes, my chlorine in over the top now)

    Air in the system.

    Well it stopped yesterday after I reseated the the lid on the pump and open the cartridge valve and released water as it filled.

    No I am not sure which it was. But the PB is rated very high as their tech/warranty

    So I am not sure which it was. But the pulsating and the champagne bubbles on the surface are gone.
    8,000 Gal, 11 x 26.8ft Shotcrete Pool with "Cool Blue" Diamond Brite by ESSIG Pools with Artistic Pavers Deck
    Goldine AQL-PLUS w/Aqua Pod, Aqua-Rite T-CELL-15 SWG, Pentair WhisperFlo High Performance 1.5HP, 2 speed pump, Pentair IntelliBrite,
    Pentair 100sqft Cartridge Filter, 6 Pool returns, Skimmer and 2 Anti-Vortex Main Drains
    Pool's completed build 2/2010

Posting Permissions

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