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Thread: IC40 IntelliChlor reading high salt when not

  1. Back To Top    #1

    Join Date
    May 2011
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    IC40 IntelliChlor reading high salt when not

    About a week ago, the IC40 started flashing high salt and was listed at 4500 indicated on the Easytouch diagnostic screen.

    Today I measured with salt test from a TF-100 kit and it is reading 3000ppm

    I'd read it might need an acid clean so I removed it for a cleaning, and this is what I found.

    IC-40-a.jpg
    IC-40-b.jpg

    After cleaning it is still showing 4500 salt.

    Questions:
    Does the chlorinator still run when high salt is flashing? I shocked yesterday with bleach because we've had some late spring rains knocking all sorts of debris into the pool and it wasn't looking stellar like it normally does.

    I did a quick rinse but did not have enough acid. Should I soak the cell?
    What percentage of water to muriatic acid?
    Pool IG 16,000 gallon (33 x 16) Spa IG 700 gallon spa - Dark Plaster, TF-100 Test Kit w/ salt test
    Sta-Rite IntelliPro VS 3050, Pentair FNS Plus 60 sq ft DE 150 GPM (rating from manual)
    Pentair Easy Touch 8, Intellichlor IC40, Polaris 360, Lars Lx400 NatGas heater, Fafco Solar panels

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    May 2013
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    South Jersey
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    Re: IC40 IntelliChlor reading high salt when not

    I believe the Pentairs still produce chlorine when reading high salt levels. That's one of their advantages. Some people clean the plates with household vinegar otherwise use about a 10:1 water to acid mixture
    25000 Gallon Pentair Intellichlor SWG Gunnite Pool with Heyward DE Filter/Pump
    Test Kit - Taylor K 2006

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    Re: IC40 IntelliChlor reading high salt when not

    The blue deposit/scaling looks like it contains copper. The copper is probably from the heater.

    I would recommend an acid cleaning. Try 3 parts water to 1 part muriatic acid. Follow safe cleaning procedures when working with acid.

    Plug one end of the cell and fill the cell with the acid mix. Don't plug both ends as carbon dioxide is produced and could build excess pressure.

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    Re: IC40 IntelliChlor reading high salt when not

    Thanks. I'll watch the pool chlorine and see if it is still working and I'll try the acid cleaning tomorrow.

    I knocked the blue crystalline deposits out with a bamboo skewer. A few hours later the diagnostic salt reading was down to 4250, still 1200+ over the test. Last summer, the salt readout from the IC40 was a couple hundred PPM above the the test kit which seemed within a reasonable margin of error.
    Pool IG 16,000 gallon (33 x 16) Spa IG 700 gallon spa - Dark Plaster, TF-100 Test Kit w/ salt test
    Sta-Rite IntelliPro VS 3050, Pentair FNS Plus 60 sq ft DE 150 GPM (rating from manual)
    Pentair Easy Touch 8, Intellichlor IC40, Polaris 360, Lars Lx400 NatGas heater, Fafco Solar panels

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    Mod Squad pooldv's Avatar
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    Re: IC40 IntelliChlor reading high salt when not

    Yes the intellichlor will continue to produce chlorine in high salt condition.
    TFP Moderator
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Re: IC40 IntelliChlor reading high salt when not

    Quote Originally Posted by Ajayabb View Post
    I believe the Pentairs still produce chlorine when reading high salt levels. That's one of their advantages.
    Quote Originally Posted by pooldv View Post
    Yes the intellichlor will continue to produce chlorine in high salt condition.
    Thank you both !
    Pool IG 16,000 gallon (33 x 16) Spa IG 700 gallon spa - Dark Plaster, TF-100 Test Kit w/ salt test
    Sta-Rite IntelliPro VS 3050, Pentair FNS Plus 60 sq ft DE 150 GPM (rating from manual)
    Pentair Easy Touch 8, Intellichlor IC40, Polaris 360, Lars Lx400 NatGas heater, Fafco Solar panels

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