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Thread: Intex sand filter system froze full of water, low pressure.

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    Intex sand filter system froze full of water, low pressure.



    I know. The system froze (as in ice) while completely full of water over the winter.

    Surprisingly there are no water leaks anywhere, so I'm trying to run it instead of replacing it (late start this year).

    It moves water ok, but there is almost no suction and the catch basket with the clear dome on the front of the pump fills up halfway with air while it is operating. I don't really know where the air is coming from, as I can open the dome and let the water push 95% of the air out before sealing it again, run it for 30 seconds, and half the water is gone.

    I pulled the impeller cover off and inspected it very closely for cracks and whatnot, didn't see any. Nothing looks deformed or 'whited out' as you might expect from stressed blue plastic. The only thing i can think is that there is a hairline crack or seal problem that is allowing air to get sucked into the pump somehow, but not enough to let water back out.

    Any other troubleshooting tips? For $250 i can have a whole new set so i'm thinking of ordering it anyway...summer is wasting.

    Edit: This is the part i'm talking about, only i know how to install the O-ring...lol


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    techguy's Avatar
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    Re: Intex sand filter system froze full of water, low pressu

    Have you added pool lube to the o-ring? Sounds like you have leaky lid.
    -- Guy --
    10K gallons in 21' Round 52 inch wall Aqualeader AG, Hayward Power Flow LX 1.5 HP pump motor, Hayward Perflex EC50AC DE filter w/Cellulose, Wide mouth skimmer, 2013 new Diver Dan (craigslist) to replace the faded old Hayward AquaBug. TF-100

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    Re: Intex sand filter system froze full of water, low pressu

    Quote Originally Posted by techguy
    Have you added pool lube to the o-ring? Sounds like you have leaky lid.
    No, apparently either I checked the 'basket' (?) in my dreams or on acid. Posting the question above gave me a bit more resolve to tear into it again, and the back of said 'basket' is completely pushed out, with hairline cracks along the flat surface heading up to the intake port.



    What a maroon, sorry for wasting everyone's time. Going to try a little heat therapy and some silicone to see if i can salvage it. For now i just bypassed it and have the pool hose going directly to the intake port (screens on the skimmer)...THE OLD PUMP IS BAAACK!!! lol

    Thanks again!

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    Re: Intex sand filter system froze full of water, low pressu

    Last update on this embarrassing saga. I heated up a steel rod, drug it along the crack a few times to smutz new plastic into the crack, and it seems to be working just fine!

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    linen's Avatar
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    Re: Intex sand filter system froze full of water, low pressu

    Glad you were able to fix it ...I hope it holds!
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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