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Thread: Low suction at the skimmers

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    Low suction at the skimmers

    Hey guys, new pool owner so please bear with me. I noticed when I checked the skimmer baskets, they were near empty. I stood and watched small items float right on by! When I run the auto pool cleaner, there's plenty of pressure there. I've removed the 4 cartridge filters and thoroughly cleaned them, as they were pretty dirty. I've also cleaned the pump basket, although there was very little debris in there. I primed the pump and put the cover back on. Any help would be aprreciated as I'm constantly hand skimming to keep the floaters out of the pool!
    Inground gunite with waterfall spa
    22,000 gal 2HP Hayward w-3/4 Hayward
    Booster Heywood Pool Heater
    swim clear cartridge filter
    1 1/2 HP Blower Silencer

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    Mod Squad woodyp's Avatar
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    Re: Low suction at the skimmers

    Is wind a factor as opposed to you skimmer positions?
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
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    Re: Low suction at the skimmers

    Wind doesn't seem to be a factor. It doesn't make any difference whether the cleaner is on or off either...
    Inground gunite with waterfall spa
    22,000 gal 2HP Hayward w-3/4 Hayward
    Booster Heywood Pool Heater
    swim clear cartridge filter
    1 1/2 HP Blower Silencer

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    Mod Squad woodyp's Avatar
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    Re: Low suction at the skimmers

    Maybe try redirecting your return jet eyeballs? Are they putting out good flow against your hand?
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

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    Re: Low suction at the skimmers

    Very good flow. I haven't changed their direction, it seems that there is a good clockwise flow to the jets. The debris moves well around the pool, it just bypasses going into the skimmers, and collects in front of it.
    Inground gunite with waterfall spa
    22,000 gal 2HP Hayward w-3/4 Hayward
    Booster Heywood Pool Heater
    swim clear cartridge filter
    1 1/2 HP Blower Silencer

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    Richard320's Avatar
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    Re: Low suction at the skimmers

    Are the weirs missing? A key element to skimmer operation is velocity. A certain amount of water has to flow into the skimmers to replenish what the pump has drawn down. If the opening is too large, the velocity goes down and nothing gets pulled in. That's why skimmer weirs float just enough to have about 1/4" of water across the top.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Re: Low suction at the skimmers

    How familiar are you with your equipment? is is possible the skimmer is off and you are just pulling water from the main drain? A photo of your equipment pad and inside the skimmer with the basket removed may help.
    12,300 Gallon, IG PebbleFina, 3 ft sheer, 2 Jandy nicheless LED lights, Jandy Pro 1.5HP VS pump (A.O. Smith Motor), PB4-60 Booster pump, Polaris 280, Jandy cv340 cartridge filter, Zodiac Z4 control panel W/iAquaLink, Stenner pumps for chlorine & MA connected to WiOn WiFi switches, TF-100. You can support TFP with AmazonSmile just click the link!

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    Re: Low suction at the skimmers

    The weirs are in place, water level seems right.
    Inground gunite with waterfall spa
    22,000 gal 2HP Hayward w-3/4 Hayward
    Booster Heywood Pool Heater
    swim clear cartridge filter
    1 1/2 HP Blower Silencer

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    Re: Low suction at the skimmers

    I'll post a pic in the morning. I'm not too familiar with the equipment, just what the pool guy showed me a week ago. He wasn't too thorough.
    Inground gunite with waterfall spa
    22,000 gal 2HP Hayward w-3/4 Hayward
    Booster Heywood Pool Heater
    swim clear cartridge filter
    1 1/2 HP Blower Silencer

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    Mod Squad pooldv's Avatar
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    Re: Low suction at the skimmers

    Often there is some stuff that goes by the skimmer but ultimately it ends up in the basket. Do you have stuff in the basket to empty every day?
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    Re: Low suction at the skimmers

    Very little in one, zero in the other.
    Inground gunite with waterfall spa
    22,000 gal 2HP Hayward w-3/4 Hayward
    Booster Heywood Pool Heater
    swim clear cartridge filter
    1 1/2 HP Blower Silencer

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    Mod Squad pooldv's Avatar
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    Re: Low suction at the skimmers

    Do you have a bottom drain?

    If yes, is there a valve on the suction side plumbing to switch between drain and skimmers? Or a diverter valve under the skimmer basket?
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Re: Low suction at the skimmers

    Inground gunite with waterfall spa
    22,000 gal 2HP Hayward w-3/4 Hayward
    Booster Heywood Pool Heater
    swim clear cartridge filter
    1 1/2 HP Blower Silencer

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    Re: Low suction at the skimmers

    And the skimmer basket
    [URL="[URL=http://s1096.photobucket.com/user/lunanippy/media/Mobile%20Uploads/2016-04/20160411_075630_zpsfil2svsj.jpg.html][IMG]http://i1096.photobucket.com/albums/g340/lunanippy/Mobile%20Uploads/2016-04/20160411_075630_zpsfil2svsj.jpg"][IMG]http://i1096.photobucket.com/albums/g340/lunanippy/Mobile%20Uploads/2016-04/20160411_075630_zpsfil2svsj.jpg
    Inground gunite with waterfall spa
    22,000 gal 2HP Hayward w-3/4 Hayward
    Booster Heywood Pool Heater
    swim clear cartridge filter
    1 1/2 HP Blower Silencer

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    Mod Squad pooldv's Avatar
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    Re: Low suction at the skimmers

    Copy the IMG code to the right of the pic and paste it in the post and it will load like this

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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Re: Low suction at the skimmers

    You have a powered Jandy valve on the input to the pump, right now it is pulling water from the right side pipe only. Have you ever seen it swing the other way when running any of the various modes from the control panel?
    The second hole in the skimmer would go to the main drain if not plumbed independently. Is the second hole plugged hard to tell in the picture?

    Around the back of the valve there should be a toggle switch that will allow you to override the control panel. Flip that switch in the opposite direction and wait till the handle is pointing at the pump then flip it to the middle neutral position to stop it from moving. With the handle pointing at the pump it will be pulling from both sides equally. Start the pump and see what happens. If the skimmer starts working put the toggle back to the original position, the handle will go back to the way it is in the picture then you will have to figure out what mode on the panel causes that valve to open.
    12,300 Gallon, IG PebbleFina, 3 ft sheer, 2 Jandy nicheless LED lights, Jandy Pro 1.5HP VS pump (A.O. Smith Motor), PB4-60 Booster pump, Polaris 280, Jandy cv340 cartridge filter, Zodiac Z4 control panel W/iAquaLink, Stenner pumps for chlorine & MA connected to WiOn WiFi switches, TF-100. You can support TFP with AmazonSmile just click the link!

  17. Back To Top    #17

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    Re: Low suction at the skimmers

    Thanks! I'm gonna look as soon as I get home!

    - - - Updated - - -

    Thanks, I'll get the hang of this yet!
    Inground gunite with waterfall spa
    22,000 gal 2HP Hayward w-3/4 Hayward
    Booster Heywood Pool Heater
    swim clear cartridge filter
    1 1/2 HP Blower Silencer

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    TFP Guide


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    Re: Low suction at the skimmers

    Here's my take.......

    The powered Jandy valve on the right of your pic is on the suction side. The pipe attached on the left side of that is your spa suction (spa bottom drain). To the right of that powered valve is pool suction. It appears there is more than one pipe on the pool suction side. If you can provide a pic of that area, it may help us better assist you.

    With the current valve positions in the pic, your setup is in pool with spa spillover mode. In your pic, the powered Jandy valve on the left is on the return (pressure) side. The left most pipe is the spa return. The pipe directly below the manual Jandy valve is the return to the pool. The pipe to the right of the powered Jandy valve is for the waterfall.

    The pipe directly below the left powered Jandy valve is for your pressure side cleaner (attached directly to the output of the boost pump). The cleaner boost pump appears to be fed from the tee fitting in the pool return side.

    I see you also have a SWG. Is it functional? Please add it to your signature as it may help at a later time when you have further questions. Also add any model numbers you can see of your other equipment.
    Gene
    ​12,300 gal IG play pool - Pebbletec - built 10/1999 || Hayward S360SX 36" sand filter || Hayward Ecostar SP3400 VSP || A&A In-Floor cleaning system || Quik Water Leveler || Quik Dek-clor (limited use)
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    Re: Low suction at the skimmers

    Alright, you guys know your equipment! I'm new to this whole pool thing so please bare with me. ATT TECH 2, I did move the valve with the handle facing the pump. This position caused the spa waterfall to stop, and the spa water level to drop. I have not seen any valves change automatically, although there is a preset filter/cleaner program running
    PROAVIA, thanks for that info, I'm told the SWG is non functional due to the pool having a stone cap.
    Inground gunite with waterfall spa
    22,000 gal 2HP Hayward w-3/4 Hayward
    Booster Heywood Pool Heater
    swim clear cartridge filter
    1 1/2 HP Blower Silencer

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    Re: Low suction at the skimmers


    Is it the blower silencer?
    Inground gunite with waterfall spa
    22,000 gal 2HP Hayward w-3/4 Hayward
    Booster Heywood Pool Heater
    swim clear cartridge filter
    1 1/2 HP Blower Silencer

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