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Thread: Is this SWG 220v ? and why is scale building on it weekly ?

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    Join Date
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    Is this SWG 220v ? and why is scale building on it weekly ?

    Hey everyone
    I have a zodiac lm3-40 SWG. It was working fine for months, years. Lately it seems it builds up scaly white sediment on the cells literally weekly. I have read that some swg's have self cleaning, this one is supposed to but no longer seems to be working. Obviously I dont want to clean this weekly. When I clean it, I can see the SWG output and it is great but quickly gets much less a week later. SHould I replace it ? is this thing 220V ? Can I purchase this item from ebay and swap it in directly without redoing plumbing ?
    New Zodiac LM3 40 Self Cleaning Salt Chlorinator Its Back | eBay

    - - - Updated - - -

    here is a pic of my setupswg.jpg

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    chiefwej's Avatar
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    Re: Is this SWG 220v ? and why is scale building on it weekly ?

    Scaling in a SWG cell is usually caused by water chemistry. Mine would scale quickly too, until I found TFP and got my water properly balanced. I haven't had to clean mine in over a year. Do you have a recommended test kit? If so, post a full set of test results.
    chiefwej
    Tucson, AZ
    16x36 rectangular (19k) Pebble Tec play pool/spa, Pentair Intelliflo VS 011018, Super II 2hp (spa), Aqua Rite T-15 SWG, Pro Grid 60 DE, Hayward H400 & Heliocol Solar heating, A&A infloor system, fill water w/high CH and TA, 50 ppm borates,TF-100 test kit

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    Mod Squad pooldv's Avatar
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    Re: Is this SWG 220v ? and why is scale building on it weekly ?

    +1 on keeping your water balanced. Check your CSI after inputting your numbers into Poolmath, Pool School - PoolMath
    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: Is this SWG 220v ? and why is scale building on it weekly ?

    From the manual, it is a 220 volt device.
    16 x 32 17500 gallons
    Vinyl in-ground
    Hayward 250# Sand Filter
    1 HP Pump
    Hayward SWG

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    Re: Is this SWG 220v ? and why is scale building on it weekly ?

    Hey fellas, thanks for the input
    I took the water to Leslie's pool supply today
    Here is what I was told......
    FAC 1
    TAC 1
    Salt 4000
    CH 300
    CYA 10
    TA 100
    ph 7.9
    Acid demand 2
    Copper 0
    Iron 0
    Phosphates 400


    I was asked to place 4 lbs of conditioner to bring my CYA levels up (15k gallon pool)

    Then I was asked to add some acid 32 oz

    Then I was told to bring down the phospates with some of their Pool perfect like solution

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    sargent's Avatar
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    Re: Is this SWG 220v ? and why is scale building on it weekly ?

    High pH and high calcium (CH) will contribute to scaling. And having low CYA will make you need to run the SWG longer, which will also contribute to increased scaling. You should get yourself a good test kit and look at PoolMath on this site to figure out how much stuff you need. Assuming Leslie's tests are correct, you need more like 8 pounds of conditioner, 12 ounces of muriatic acid, and you should bring the chlorine level up with a gallon of bleach. You don't need the pool perfect; phosphates aren't a problem if you keep your chlorine at the proper level.
    14k gal IG vinyl, Jandy Flopro 1 hp up-rated, 2 spd pump, Hayward 325 sq ft cartridge filter, Circupool Si-40 SWCG

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    chiefwej's Avatar
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    Re: Is this SWG 220v ? and why is scale building on it weekly ?

    You need to gain control of the pool. Did you notice that you said you were told to add this or that, well with a good test kit and a bit of knowledge (easily obtained here), you will know what to add, not be told. It's up to you to decide, either buy a good test kit (TF-100 highly recommend) and use TFP methods, or go to a pool store have them test your water and buy whatever magic potions they want to sell you. What you cannot do is mix the two methods, they are completely incompatible. It's your money, your pool and your choice.

    We have found pool store testing to be inconsistent, unreliable, and worth just what they charge for it...nothing.
    chiefwej
    Tucson, AZ
    16x36 rectangular (19k) Pebble Tec play pool/spa, Pentair Intelliflo VS 011018, Super II 2hp (spa), Aqua Rite T-15 SWG, Pro Grid 60 DE, Hayward H400 & Heliocol Solar heating, A&A infloor system, fill water w/high CH and TA, 50 ppm borates,TF-100 test kit

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    Re: Is this SWG 220v ? and why is scale building on it weekly ?

    Thank you for the responses......

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