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Thread: TC and FC still high

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    TC and FC still high

    I've been adjusting the Intellichlor the last week trying to get my chlorine right and I thought I was on the right track the other day. The FC dropped to 7.5 from 15 running it at 30% 8hrs. Now it's back up to 9 and the TC has always read 5 (maybe it's higher but the test only goes to 5) Salt is around 3120 and I just got some salt I'll add to bump it up. Should I turn the output down another 5%?

    Also, I admit I really don't know much about the filter and pumps, etc. but I've been reading the manuals. I gather that it's normal for the cell light on the SWG to not be on constantly, but is it normal for the filter to not run when in it's on time? Meaning does it cycle on and off, too, like the SWG?
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    17,000 gal IG w/ raised 8' spillover spa, 3M plaster, 10' stainless rain WF, Pentair SAM lights, Sta-Rite Sys3 cart. filter, Intellichlor SWG, 400kBTU Gas Heater, Paramount IF Cleaners, ET-8 Wireless Remote

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    revstriker's Avatar
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    Re: TC and FC still high

    Quote Originally Posted by Vegasmom
    I've been adjusting the Intellichlor the last week trying to get my chlorine right and I thought I was on the right track the other day. The FC dropped to 7.5 from 15 running it at 30% 8hrs. Now it's back up to 9 and the TC has always read 5 (maybe it's higher but the test only goes to 5) Salt is around 3120 and I just got some salt I'll add to bump it up. Should I turn the output down another 5%?

    Also, I admit I really don't know much about the filter and pumps, etc. but I've been reading the manuals. I gather that it's normal for the cell light on the SWG to not be on constantly, but is it normal for the filter to not run when in it's on time? Meaning does it cycle on and off, too, like the SWG?
    I don't know much about SWG, but TC is a total of FC and CC. So if you have 7.5 FC, you have to have at least 7.5 TC.

    Unless these stand for something different on SWG.
    10K White Plaster Pool Built in 2007. Hayward Pump and DE Filter, Hayward Navigator, Liquidator (Removed due to issues), Solar Blanket, BBB user.

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    JasonLion's Avatar
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    Re: TC and FC still high

    The pump/filter should always be on when it is programmed to be on. The SWG will cycle on and off when it is programmed to be on.

    Keep in mind that the FC level will vary over the course of the day. When calibrating a SWG percentage, it is best to only measure the FC in the early evening. That way you get consistent readings at the time when FC is likely to be lowest.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: TC and FC still high

    Quote Originally Posted by JasonLion
    The pump/filter should always be on when it is programmed to be on. The SWG will cycle on and off when it is programmed to be on.
    So does that mean it's losing prime? When it's on, the psi is around 21.

    Quote Originally Posted by JasonLion
    Keep in mind that the FC level will vary over the course of the day. When calibrating a SWG percentage, it is best to only measure the FC in the early evening. That way you get consistent readings at the time when FC is likely to be lowest.
    Ok, didn't realize that!
    No Cover Charge
    17,000 gal IG w/ raised 8' spillover spa, 3M plaster, 10' stainless rain WF, Pentair SAM lights, Sta-Rite Sys3 cart. filter, Intellichlor SWG, 400kBTU Gas Heater, Paramount IF Cleaners, ET-8 Wireless Remote

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    Re: TC and FC still high

    Quote Originally Posted by Vegasmom

    So does that mean it's losing prime? When it's on, the psi is around 21.
    At these times, can you hear the pump, but the psi is at, or close to 0?
    If you lose prime, you will hear to pump trying to do something, but it won't be moving water, so psi will be 0, or very low.
    It will also sound different, if it loses prime, and can't prime itself.

    You should not let it run very long if it can't prime, you could burn out the pump, it needs the water to cool itself down.

    Randy
    20,000 gal fiberglass pool, Raypak 266k BTU Lo Nox gas heater, Purex 2048 48 sq ft DE filter, 1.5hp pump. iWave wireless remote, Pulsafeeder chlorine pump, Safety cover on most of the time

    seperate spa, with own pump, cartridge filter, Teledyne heater

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    Re: TC and FC still high

    Thanks, Randy. No, it doesn't make any sound at all. Like it's completely shut off. I contacted the PB and he said it sounds like a computer problem and would get a work order on it. They've already done work on the seals, it was leaking pretty bad for awhile.

    Retested FC tonight and it was at 6, but I don't know how accurate that is under normal operation because the pump was off and on throughout the day today.
    No Cover Charge
    17,000 gal IG w/ raised 8' spillover spa, 3M plaster, 10' stainless rain WF, Pentair SAM lights, Sta-Rite Sys3 cart. filter, Intellichlor SWG, 400kBTU Gas Heater, Paramount IF Cleaners, ET-8 Wireless Remote

  7. Back To Top    #7

    Re: TC and FC still high (now too low)

    As mentioned before I have been having trouble with the pump. PB has not sent anyone out. Now my FC is 2 and my CC is .5

    Do I need to add the recommended amount of bleach? (33 oz.) I had reduced output to the SWG, but I don't suspect that is the problem. It's that the filter pump keeps shutting off during the day, resulting in the SWG being off.
    No Cover Charge
    17,000 gal IG w/ raised 8' spillover spa, 3M plaster, 10' stainless rain WF, Pentair SAM lights, Sta-Rite Sys3 cart. filter, Intellichlor SWG, 400kBTU Gas Heater, Paramount IF Cleaners, ET-8 Wireless Remote

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    JasonLion's Avatar
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    Re: TC and FC still high

    You need to maintain the FC level. If you can't get the SWG to do that, then you need to add chlorine manually.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    frustratedpoolmom's Avatar
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    Re: TC and FC still high

    You'll need to figure out a way to circulate the water and the bleach, so that it mixes properly.

    Sorry this is happening!
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  10. Back To Top    #10

    Re: TC and FC still high

    Thanks, guys.
    FPM: Luckily the In-Floor system is working well and it keeps the water circulating. I added the bleach last night and my CL this morning was 3. I'll do another FC tonight. It's such an intermittent thing...PB was out this morning and of course it was working fine! They think maybe it's shutting off because of the heat we're having. Owner's son said his did the same thing the other day. They said they'll get someone out to look at it.

    I want to thank everyone again for pushing me to test my water. Otherwise, I might have wound up with a green pool!
    No Cover Charge
    17,000 gal IG w/ raised 8' spillover spa, 3M plaster, 10' stainless rain WF, Pentair SAM lights, Sta-Rite Sys3 cart. filter, Intellichlor SWG, 400kBTU Gas Heater, Paramount IF Cleaners, ET-8 Wireless Remote

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