Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: Loss of Suction

  1. Back To Top    #1

    Join Date
    Oct 2014
    Location
    Leesville, SC
    Posts
    6

    Loss of Suction

    While I was away on a week's business trip, our pool started having an issue. A couple of days before my return, my wife reported that the pool waterfall fountain (similar to : http://store.pinchapenny.com/product...-pool-fountain) was no longer spraying. Since we purchased the house a couple of months back. I had noticed the pressure seemed to vary some, but it had never stopped.

    Anyway I thought I would try to see what the issue is. After doing some internet searches, I opened the pump's filter basket area, and the basket was full of leaves and crud, and the basket itself was cracked and split. So I cleaned the basket out. (I also ordered a replacement basket and replacement cover gasket but they won't arrive for a couple of days). I put the basket back, filled the basket area with water and re-closed it. I also took the time to replace the filter's pressure gauge as the old one was broken -- I had ordered a replacement and it was here waiting for me.

    The issue is that it does not seem to be maintaining suction on the line from pool into the pump. After 1-2 minutes I'll see water start rushing into the filter basket, (the gauge will go to 10-15 psi), and then drop, like a air leak in the line. It would do this repeatedly every few minutes, and I finally just switched off the power. I've tried re-seating the rubber sealing gasket on the basket area -- that makes no difference. I cannot see any cuts, trash, that would be stopping a seal. And when I open to check and reseal, there does appear to be some vacuum as I take off the basket cover. And during this course I'm getting a lot of air out of the return line from the filter back to the pool.

    Other than waiting for the new gasket seal to arrive and trying that, is there anything else I can should check? Or am I missing some step? I don't see an air release on the Hayward filter like some videos show to release the air from the filter...

    Thanks in advance!
    Michael
    Pool: 29.5K IG vinyl, Hayward Pro Series High Rate Sand filter #S220T, Pentair IntelliFlo VSP pump, IntelliChlor IC40 salt chlorine generator, Polaris Sport 280 pressure cleaner w/new Polaris PB4-60 Booster Pump, 1 Intermatic p1353 Timer (used only for IntelliChlor and Polaris Sport cleaner).

  2. Back To Top    #2
    Smykowski's Avatar
    Join Date
    Sep 2011
    Location
    Gurnee, IL (North Suburban Chi-town)
    Posts
    3,065

    Re: Loss of Suction

    Inground or abovr ground pool?

    Your description sounds like an air leak on the suction side. You're doing a good job on the troubleshooting so far. Look for leaks at any gaskets, seals, and joints (shaving cream can help diagnose). Another slim possibility is that the there's not enough flow to the pump. How many return lines go from the pool to the pump? Are there isolation valves in your setup?
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

  3. Back To Top    #3
    Smykowski's Avatar
    Join Date
    Sep 2011
    Location
    Gurnee, IL (North Suburban Chi-town)
    Posts
    3,065

    Re: Loss of Suction

    Also, if you haven't had this issue before, is it possible that something got sucked into a return line and is now blocking the flow?
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

  4. Back To Top    #4

    TFP Guide

    In the Industry

    Join Date
    May 2007
    Location
    New Brunswick Canada
    Posts
    819

    Re: Loss of Suction

    Filling and draining is the pump being starved of water.

  5. Back To Top    #5
    n240sxguy's Avatar
    Join Date
    May 2014
    Location
    Benton, KY
    Posts
    1,800

    Re: Loss of Suction

    How did all that junk get in the filter basket? The skimmer should be stopping it before it gets to the pump. Nothing stuck in the impeller? Nothing blocking any pipes? Just thinking out loud here.
    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

  6. Back To Top    #6

    Join Date
    Oct 2014
    Location
    Leesville, SC
    Posts
    6

    Re: Loss of Suction

    I just want to follow-up and say thank you to everyone for the suggestions, questions, etc. I spent some time yesterday going over the system and cleaning out at various points. To net it out I have suction restored, and it seems to be better than before. The best I can tell the issue was caused by debris (mostly leaves) at various points in the system. I have not found any gaps around fittings, etc. so far. And I still have some parts to replace once they arrive -- pump filter basket, basket cover gasket, etc. We do have a live oak near the pool and based on wind and fall season it contributes mightily to the pool debris. Need to look at some options to address that but prefer not to cut the tree.

    Thanks!
    Michael
    Pool: 29.5K IG vinyl, Hayward Pro Series High Rate Sand filter #S220T, Pentair IntelliFlo VSP pump, IntelliChlor IC40 salt chlorine generator, Polaris Sport 280 pressure cleaner w/new Polaris PB4-60 Booster Pump, 1 Intermatic p1353 Timer (used only for IntelliChlor and Polaris Sport cleaner).

Posting Permissions

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