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Thread: Skimmer Making a Gulping Noise

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    Join Date
    Mar 2015
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    Skimmer Making a Gulping Noise

    Two days ago, I noticed that my skimmer was making a kind of gulping noise. I would take in water and then it would sort of swirl it all down an gulp it to the bottom and then flip up again and gulp it all down again. Meanwhile, the pump will not totally fill up with water (I can see it's struggling to get water in, but is near the top). Meanwhile, the pressure gauge on my cartridge filter is kind of fluctuating under 10. Not sure if any of this info is helpful, but this is what I'm seeing. Anyway. I decide to put a little more water in the pool thinking that maybe the water level had gotten a little low and that's why that was happening. And eventually, the problem stop. So either is was the water level or the pump finally caught on.

    Today, I turned off the pump to clean everything out (skimmer basket, pump basket, cartridge) and when I restarted the same thing happened. Skimmer is making the same gulping noise. Could it really be the water level? Should I keep it higher. To be, it looks like about halfway up the skimmer (maybe about a 1/4" lower). Is it better to keep it higher to avoid this? Or am I doing something else wrong?
    Just bought first above-ground pool!
    24' x 54" round Matrix by Sharkline
    150 sq. ft. Pentair cartridge filter with 1 1/2 HP dual speed pump
    Looking into heaters now...
    Any help is appreciated!

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    Mod Squad JohnT's Avatar
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    Re: Skimmer Making a Gulping Noise

    Normally there is a mark on the skimmer to indicate the correct water level. Is this happening when your pump is running on high speed?
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    mikemass's Avatar
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    Re: Skimmer Making a Gulping Noise

    Check that your skimmer flapper door is operating properly. (Should "float" at about a 45 deg angle). And that nothing is jammed under the hinge (like a dead toad or a twig).
    25 + year pool owner. Current pool (going on 11th year) - 38K gallon in ground Gunite/White Plaster, Spillover Spa, Hayward Cartridge Filter, Hayward 450k BTU NG Heater, Hayward Goldline Aqua Logic control with T-Cell-15 Salt Water Cell, Dolphin Explorer.
    You Need: Bleach, a A Test Kit & a Bookmark to "Pool School". Now what's your question?

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    Mar 2015
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    Cleveland, Ohio
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    Re: Skimmer Making a Gulping Noise

    I don't see a mark on the skimmer, but I'll check my manual again and see if I'm missing something. Yes, it is happening when the pump is running on high speed. There's nothing jammed in the flapper door, but the door is not operating as it should. It's not floating. It's getting sucked down towards the skimmer basket during the gulp and then pops back up again and gets sucked down again and on and on. The gulping issues stopped when I removed the flapper door entirely. I also put the hose in and refilled the pool level just a bit and everything is running fine, so maybe the slightly lower water level was the issue after all? I wonder if I'm just losing a bunch of water as I clean the filter?
    Just bought first above-ground pool!
    24' x 54" round Matrix by Sharkline
    150 sq. ft. Pentair cartridge filter with 1 1/2 HP dual speed pump
    Looking into heaters now...
    Any help is appreciated!

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    borjis's Avatar
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    Aug 2014
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    Re: Skimmer Making a Gulping Noise

    sounds like you just had a low water level.

    the mid marking on the skimmer opening is OFTEN (but not always) correct....I found my skimmer was installed a bit lower than usual for some reason, though
    it is flush with the deck where the lid is. Some other folks have had that as well.

    Mine will vortex and gulp if the water line is at the marking...anything slightly higher than that and it works properly.

    The weir is freely movable and works correctly.
    16x32 IG Vinyl, 13,000 Gals. Hayward S-244T sand filter, SP2810X15 pump
    (1.5 HP motor) Raypak PR266AEN (266k btu) gas heater. TF-100 Test Kit.
    Dolphin E10 Cleaning Robot.

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    Divin Dave's Avatar
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    Re: Skimmer Making a Gulping Noise

    Your water level is too low. Just add some H20 until your skimmer wier "floats" and you have a nice flow of water into the skimmer.
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

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