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Thread: Broken air relief tube Hayward S200. What does it do?

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    Cllyde's Avatar
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    Question Broken air relief tube Hayward S200. What does it do?

    Hello TFP, this is my first post on this site! Let me know if there is anything I'm leaving out, or if this isn't the right place for a post like this.

    I was wondering if anyone can explain what the air relief tube does in my Hayward S200 sand filter?

    The reason I ask is because I just changed the sand in my filter over the weekend, and found out that the existing tube was broken near the bottom, and a pit was being formed in the sand right above where the break was, as you can see in this photo.

    IMG_2057_600.jpg

    I have a feeling that this was causing an issue with the filtering capability of my pool, but I don't know the purpose of the air relief tube, so I am not sure exactly this might have been affecting it.

    Once I got all the sand out of the filter with a shop-vac, I inspected the laterals and everything looked okay except for the air relief tube, which I was able to replace with parts from Lowes.

    IMG_2073_600.jpg

    The reason I changed the sand in the first place was because my pool has been cloudy for the past 3 weeks, even though it looks really blue and my levels are all in range (PH 7.3, CL kept around 5, TA 100).

    IMG_2041_600.jpg

    I think I'm on the right track now though, I'm checking levels every day and adding chlorine with 8.25% Clorox when needed. I've been brushing the whole pool every day for a couple weeks now. Since I changed the sand on Sunday it has cleared up just enough to make out the pattern on the bottom of the pool in the shallow end. I think by the end of the week if it isn't really noticeably clearing up I might try adding DE again like I did before changing the sand, but I'm optimistic that I won't have to with how it is going so far.
    First year with a 28'x18'x≈6' deep IG vinyl oval pool, for ≈19,500 gallons.
    Hayward S200 sand filter. New sand 8/10/2014. Dynamo high performance pump built 02/21/2011, not sure when installed.
    I'm using 7 way test strips from Menards, and 4 way test strips from Bioguard.

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    Mod Squad JVTrain's Avatar
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    Re: Broken air relief tube Hayward S200. What does it do?

    The air relief line allows an easy route for air to escape sand instead of causing channels in the sand like you had near that break.

    I'd be concerned with the cloudiness. Post full test results and consider an OCLT to make sure things are OK.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
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    Cllyde's Avatar
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    Re: Broken air relief tube Hayward S200. What does it do?

    How would air get into the sand in the first place?
    OCLT is less than 1 as far as I could tell this morning, all I have are test strips.
    First year with a 28'x18'x≈6' deep IG vinyl oval pool, for ≈19,500 gallons.
    Hayward S200 sand filter. New sand 8/10/2014. Dynamo high performance pump built 02/21/2011, not sure when installed.
    I'm using 7 way test strips from Menards, and 4 way test strips from Bioguard.

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    Mod Squad jblizzle's Avatar
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    Re: Broken air relief tube Hayward S200. What does it do?

    Well, you just replaced all the sand (not likely necessary), so the filter was full of air at that point. Now it all needs to be purged by running the filter. You could also introduce air when you backwash.

    I agree with JVTrain ... cloudy water is generally a chemistry issue and not a filtration issue. Post up a full set of test results. Specifically, what is your CYA level? That determines what is the required FC level according to the FC/CYA Chart.

    - - - Updated - - -

    Oops. Just saw you are only using test strips. That is not going to cut it. Seriously consider investing in one of the Recommended Test Kits if you want to understand and control your pool.
    Jason, TFP Moderator
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