Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 16 of 16

Thread: PSI at 0 after vacuuming leaves. Help.

  1. Back To Top    #1

    PSI at 0 after vacuuming leaves. Help.

    We received a storm a few nights ago and the temp dropped so we have a ton of leaves in our pool. Unknowingly, my wife vacuumed up a bunch of leaves trying to clean the pool. The gauge now reads 0 psi and when I went to backwash, the water pressure was very low. I cleaned the basket in the pump and think that some leaves got into the plumbing and is blocking the flow. I have a DE Hayward filter and Hayward pump for a gunite inground pool. I need to fix the problem before I can close my pool. Thank you.

  2. Back To Top    #2
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Location
    Houston, Texas
    Posts
    9,201

    Re: PSI at 0 after vacuuming leaves. Help.

    Hi,
    have you tried using a drain king to blow out any obstructions in the line?
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
    Love TFP? Become a
    TFP Supporter!

  3. Back To Top    #3

    Re: PSI at 0 after vacuuming leaves. Help.

    I should also note that the pump now does not fully fill up with water. This seems to be causing a "hiccup" effect on the water going from the pump into the filter. This hiccup effect also occurs during backwash. I have not tried drain king. Would I use it on the line going into the pump?

  4. Back To Top    #4
    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    Location
    SW Indiana
    Posts
    9,090

    Re: PSI at 0 after vacuuming leaves. Help.

    Before you get the drain king, try a hose inserted into the inlet side of the pump basket with a rag around it to seal it. If you have a main drain valve, close it. The hose alone may be able to flush the leaves out into the skimmer.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

  5. Back To Top    #5

    Re: PSI at 0 after vacuuming leaves. Help.

    I'll give it a shot. Thanks.

  6. Back To Top    #6

    Re: PSI at 0 after vacuuming leaves. Help.

    Despite the great advice here, my system is still not working properly. I used a drain king and there seemed to be no blockage issue through the line to my eyes. I hooked everything back up, powered on, and the filter still reads at 0 psi even when the water starts going through. There seems to be a decent size air bubble forming in the small pipe that connects the pump to the valve that does not go away when the pump is on. I should also note that the pump basket area never completely fills with water even when I start it full of water. It ends up about 3/4 the way filled and stays there. I did some trouble shooting cleaning out the grids and putting the pool filter back together in case it was a filter issue, but am still having no luck. Any further advice would be greatly appreciated. Thank you.

  7. Back To Top    #7
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,490

    Re: PSI at 0 after vacuuming leaves. Help.

    The pump's impeller is probably clogged. Sometimes you can reach it through the pump basket but if that doesn't work, then you may need to take apart the pump to get to the impeller.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  8. Back To Top    #8

    Join Date
    May 2010
    Location
    Dallas TX
    Posts
    181

    Re: PSI at 0 after vacuuming leaves. Help.

    Quote Originally Posted by mas985
    The pump's impeller is probably clogged. Sometimes you can reach it through the pump basket but if that doesn't work, then you may need to take apart the pump to get to the impeller.
    Bingo, just what I was going to suggest -
    I have to take my pump apart every couple months to dislodge junk from the impeller that snuck through the basket. Small twigs, hair, etc. bleh.
    33k Gunite, CompuPool CPSC48 SWG, Sta-Rite System 3 DE, 2.25hp dual-speed, POOLVERGNUEGEN Pressure-side

  9. Back To Top    #9
    fofa's Avatar
    Join Date
    Sep 2008
    Location
    Houston, TX
    Posts
    75

    Re: PSI at 0 after vacuuming leaves. Help.

    I can usually clean the impeller with a small diameter, longish bladed screw driver through the pump basket. Along with a jet nozzle on the garden hose.
    Spin the impeller with the driver (usually backwards), wash it out with the jet of water, remove debris from pump housing (by hand) that flushed out, do it again, and again, and .....
    30,000 Gallons, Hayward C5030 cartridge filter, IG, Plaster, SWG

  10. Back To Top    #10
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,490

    Re: PSI at 0 after vacuuming leaves. Help.

    Another method that has worked for me is to backflush from the return side to the suction side of the pump. This will usually dislodge anything in the impeller vanes that cannot be reached from the suction side. However, this will not work for every setup since some pumps are hard plumbed and do not have couplers to easily remove the piping.

    Of course if all else fails, then the only other option is to take the pump apart.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  11. Back To Top    #11

    Re: PSI at 0 after vacuuming leaves. Help.

    I'll be sure to give the impeller a shot this weekend, however, I still think that maybe the line is clogged a bit because the pump basket area never completely fills with water even when I start it full of water. It seems like the line is not delivering enough water fast enough to fill the basket area of the pump while the filter is on. My wife sucked up a good amount of leaves and there were not that many collected in the pump basket when the psi fist hit zero. Thank you all again.

  12. Back To Top    #12
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,490

    Re: PSI at 0 after vacuuming leaves. Help.

    A clogged impeller can also behave that way. There is not enough flow in the pump to push out the air in the pump basket so the pump doesn't fully prime. Same reason a pump won't prime on low speed or when there is a return blockage.

    However, before taking apart the pump, do eliminate a clogged line first since it is much less trouble.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  13. Back To Top    #13

    Re: PSI at 0 after vacuuming leaves. Help.

    Just took out the pump and the impeller is not clogged or dirty in any way. Feeling totally stuck here.

  14. Back To Top    #14

    In the Industry

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

    Re: PSI at 0 after vacuuming leaves. Help.

    Well, if I am following this correctly, you have not yet confirmed that the line from the skimer(s) to the pump is unclogged....correct?

    Since your impeller is not clogged, that would seem the next place to look....i.e. drain king, etc.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  15. Back To Top    #15
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,490

    Re: PSI at 0 after vacuuming leaves. Help.

    I did suggest this:

    Quote Originally Posted by mas985
    However, before taking apart the pump, do eliminate a clogged line first since it is much less trouble.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  16. Back To Top    #16

    Re: PSI at 0 after vacuuming leaves. Help.

    I'm going after the line again. Thanks.

Posting Permissions

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