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Thread: How Do I Clean My Chlorinator?

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    Join Date
    Apr 2012
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    Cincinnati, OH
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    How Do I Clean My Chlorinator?

    Hi everyone. First time poster here. I'm getting ready to begin my 10th season as a pool owner. Here's my issue. I have a basic inline chlorinator and I use 3" chlorine tabs in it. Usually, I go through 1 tab a day with the pump running 10 hours a day in the summer. I have found that the chlorinator needs annual maintenance to keep it clean on the inside, so I remove it from the system and soak it overnight with CLR, then hose it down well and re-install it before opening my pool for the season. That has kept the chlorinator clean and allowing chlorine to rinse into the pool like its supposed to. This year my little technique did not work. It is taking a very long time for my tabs to dissolve into the pool.

    I'd like to get some thoughts on how to clean the chlorinator so it works properly. Right now, there is a scaley buildup on the inside of it. Is there a chemical I can use to rinse out the gunk? If I can't get the thing cleaned out, its going to cost me about $75 to get a new one and I know there is a way to clean it, but my web searches have been unfruitful thus far. Thanks in advance for your ideas!
    16' x 34' inground steel pool with vinyl liner.
    Hayward 1 hp pump and sand filter with Zeolite.
    8 panel 4' x 10' solar panel heater system.

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    maxepr1's Avatar
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    Re: How Do I Clean My Chlorinator?

    Welcome to TFP! Were not real big fans of chlorinators here, but will try to help. Is it scale build up? Chemistry could be causing scale. Any pics?
    40'x19' IG Diamond Brite 29K 4' Waterfall/Dive Rock FNS60 DE Inteliflo VS 2hp Whisperflo pumps Aqualogic(P4) SWG TF100 Tester


    Pool School, Pool Calculator,TFTestKits,

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    Apr 2012
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    Re: How Do I Clean My Chlorinator?

    Yes, scale has built up on the inside. So its safe to assume there is scale on the little orifices at the bottom of the chlorinator. I need to get that cleaned out so it works again.
    16' x 34' inground steel pool with vinyl liner.
    Hayward 1 hp pump and sand filter with Zeolite.
    8 panel 4' x 10' solar panel heater system.

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    Re: How Do I Clean My Chlorinator?

    Tabs contain a binder that can build up in feeders. It tends to be a gummy residue. If it is scale, then it would be hard and brittle. Using too many tabs will oxidize the feeder and create a layer of oxidized plastic.

    Can you determine which of these things might be occurring?

    What are all of your chemical readings?

    What is the make and model of your feeder?

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    duraleigh's Avatar
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    Re: How Do I Clean My Chlorinator?

    As long as it's all plastic, you can dip it into a 3:1 mix of muriatic acid and water and see if it foams up (that'll mean it is coming off).
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: How Do I Clean My Chlorinator?

    JamesW - the buildup appears to be mostly gummy but its got a brittle component also. Seems to be a combination of both. Chlorine is zero and I haven't balanced the water yet so the other readings are off as well.

    duraleigh - I think this is the info I am looking for. I'll stop by my pool store today and talk with them about it. Thanks!
    16' x 34' inground steel pool with vinyl liner.
    Hayward 1 hp pump and sand filter with Zeolite.
    8 panel 4' x 10' solar panel heater system.

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