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Thread: Intex SWG failing - again

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    jmcdtucson's Avatar
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    Intex SWG failing - again

    My chlorine levels have been dropping but the pool is sparkly clean. SWG is not raising levels at all. OCLT is negative. CC is 0.
    Today my FC in the morning was 2.5. Yesterday it was 5, the day before it was 7. That is with running the SWG 4 hours. I usually need only 2-3 maximum.
    I measured the FC at the outlet and it's 4.5. Hardly enough to raise or maintain chlorine levels.
    The cell is free of hard water deposits.

    This same thing happened last year and I replaced the SWG and it fixed it and has been working until now. Are these Intex SWG's just garbage and only good for a year? My credit card doubles the warranty so I should get a new one for free but this just seems unacceptable to have to replace it every year.
    Intex 12'x24'x52"
    8,403 gallons
    Intex SF60110 2450 GPH Sand Filter
    Intex CS8110 SWG
    Aquabot AJET121I Pool Rover S20-40

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    jeffchap's Avatar
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    Re: Intex SWG failing - again

    I consider myself lucky if I get 2 full years out of one. But you can get a replacement cell directly from Intex for $69 the last time I checked.

    All things considered, that's not a bad deal.
    25000 gallon free-form gunite
    Jandy Stealth pump/CL340 cartridge filter
    Pentair IC40 SWG
    Pentair MasterTemp 250HD heater
    Jandy AquaLink RS automation

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    cowboycasey's Avatar
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    Re: Intex SWG failing - again

    The intex puts out about .63 pounds of chlorine gas a day and that will add 9.4 FC per day in 24 hours

    So that will add 0.39 FC per hour it is running or 1.5 FC the 4 hours you are running.. so that almost matches exactly what you are seeing/losing

    Why they are making more when they are new I am not sure about..

    To stay ahead of your chlorine loss you would need to run about 8 to 10 hours and that would put you at 3 to 4 FC per day..

    I hope this helps
    Pool: Intex 16x32 15000 gal, 2 speed 340042, Pentair CC320 Filter, CircuPool SJ45 Salt System, Intermatic PE653RC; Hot Tub: 650 Gal SWG Megachlor
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    jmcdtucson's Avatar
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    Re: Intex SWG failing - again

    Quote Originally Posted by cowboycasey View Post
    The intex puts out about .63 pounds of chlorine gas a day and that will add 9.4 FC per day in 24 hours
    Thanks! I checked the math and you are spot on - never thought of actually calculating it out.
    Now to test the theory. It'd be weird if it produces so much more during the first year then drops down exactly to spec!
    Maybe I'll run on boost till it dies, or upgrade the SWG. I'm not excited running my pump 8-10 hours per day! I guess I could just kick out the $69 per year for a new cell too. Probably save that much on electricity just running my pump 2-4 hours per day like I usually do.
    Intex 12'x24'x52"
    8,403 gallons
    Intex SF60110 2450 GPH Sand Filter
    Intex CS8110 SWG
    Aquabot AJET121I Pool Rover S20-40

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