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Thread: Help with Suction clog or other issue...?

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    Dec 2014
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    Help with Suction clog or other issue...?

    So...I am getting about half or less of the normal suction from my skimmer basket line. This is also the line that I vacuum and is the only line for the pool as the main drain is capped off. There is another suction line for the spa that is "over-suctioning" and draining whenever I run the pool. This is how I realized I was having a problem also how I know the pump is pumping. That and the pool is turning green cuz I guess it is not getting enough circulation. So I am curious if you guys could share any tips or fixes to troubleshoot a clogged suction line...? Let me know if you need more info.

    Thank you in advancefor your help!
    30,000 gallons, in-ground plaster, well water, Hayward tri-star pump, Pentair Sand Dollar SD80 filter. TF-100 kit

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    Texas Splash's Avatar
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    Re: Help with Suction clog or other issue...?

    Other than an adjustment (3-way) valve between the two, is there any chance perhaps you simply sucked something into your skimmer line causing a partial obstruction? Just to confirm, is your skimmer basket (clear lid) full of water? Any air or drop in water level?
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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    Re: Help with Suction clog or other issue...?

    Yes - I think I did suck something in there while I was vacuuming yesterday. Im wondering how I get it unclogged. Sorry I know I am a novice!

    Yes Skimmer is full of water.
    30,000 gallons, in-ground plaster, well water, Hayward tri-star pump, Pentair Sand Dollar SD80 filter. TF-100 kit

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    Texas Splash's Avatar
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    Re: Help with Suction clog or other issue...?

    If you suspect something got sucked-in from the skimmer, your options are things like:
    - Try to push water from the skimmer basket (pump) side BACK to the pool skimmer (put a rag around the hose to help create a seal for better pressure)
    - Try running a "snake" line through to free-up the clog
    - Some folks may try air pressure if they have that capability
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

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    Richard320's Avatar
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    Re: Help with Suction clog or other issue...?

    Yep - backflush it. Kill the pump, open the pump basket and feed a garden hose down the pump inlet. Ideally, you have a drain king bladder, but wrapping it with a rag will also seal it up. Move the valve to full skimmer suction and hold that hose in and have your helper turn on the water and let 'er rip.

    In years past people have discovered small toys jammed in the three-way valves, so if the first attempt doesn't get things, you might want to disassemble the valve and look inside or try backflushing from there to the skimmer.

    Drain King:
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Help with Suction clog or other issue...?

    Well I just tried rigging it with a rag to no avail. I did see some small particles come back to skimmer line but nothing even remotely big enough to clog. Hmmmmm. I have a pool company coming out tomorrow hopefully they can diagnose and pprescribe a low cost solution.
    30,000 gallons, in-ground plaster, well water, Hayward tri-star pump, Pentair Sand Dollar SD80 filter. TF-100 kit

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    In the Industry

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    Re: Help with Suction clog or other issue...?

    The Drain King works well. A compressor with a Drain King works really well.

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    Re: Help with Suction clog or other issue...?

    An update - I just went out there and saw bubble coming out of a return jet. It would appear I have some air in the line. Could that caused the reduced suction? How do I troubleshoot this?

    Thanks again for all of the help!!!
    30,000 gallons, in-ground plaster, well water, Hayward tri-star pump, Pentair Sand Dollar SD80 filter. TF-100 kit

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