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Thread: Old salt cell union nut cracked

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    Old salt cell union nut cracked

    I've got an old RP40HD unit that has two salt cells. One of the cells was dead when I bought the equipment, the other has always been enough to keep up so I never worried about it. The other day I noticed a small drip from the dead cell so I went to tighten it and realized the nut was cracked. The way it is plumbed, I can't cut the union off and cap it because the union comes right out of an elbow which comes right out of a T. No pipe to glue a cap to. Some I'm kinda lost on what to do. Ive had the cell for 3 summers now and it was used when I got it so I don't know how much life it has left anyways.
    Unless there is some clever solution, what kind of system is popular right now?
    15,000 gallon gunite pool, grey plaster with 8' raised spa
    Jandy PlusHP Pump 2 HP Dual Speed
    Sta-Rite 450 Sq. ft. Cartridge Filter
    Cleva-Chlor RP40HD
    Raypak 400k btu heater
    Jandy Aqualink RS-8 One Touch
    Savi Melody 12v LED lights

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    Bluegrassman's Avatar
    Join Date
    Jan 2012
    Location
    West KY
    Posts
    243

    Re: Old salt cell union nut cracked

    Pictures always help (as far as plumbing goes)

    I have the Pentair IC-40 and it does a great job. This is my first year with it though, so time will tell. It is really nice combined with the automation system.
    18x36 Vinyl IG ~27,000 gal, Intelliflo VF Pump, 300# Sand Filter, Polaris 280 w/Pentair Booster Pump, Pentair EasyTouch w/ IC40 SWCG
    TF100 Test Kit
    SpeedStir

  3. Back To Top    #3

    Re: Old salt cell union nut cracked

    In this pic, it is the upper cell that has the cracked union. It appears that there may be just enough pipe out of the t, before the elbow, to cap. But that means that the good cell will now see twice the flow compared to what it is used to seeing. I wonder if this will be the death of it?
    Attached Images Attached Images
    15,000 gallon gunite pool, grey plaster with 8' raised spa
    Jandy PlusHP Pump 2 HP Dual Speed
    Sta-Rite 450 Sq. ft. Cartridge Filter
    Cleva-Chlor RP40HD
    Raypak 400k btu heater
    Jandy Aqualink RS-8 One Touch
    Savi Melody 12v LED lights

  4. Back To Top    #4
    Bluegrassman's Avatar
    Join Date
    Jan 2012
    Location
    West KY
    Posts
    243

    Re: Old salt cell union nut cracked

    That is an interesting configuration for sure. I'm no expert, so this is just my assumption. My understanding is that hours of operation are the main factor in cell life, therefore I don't think the increased flow will impact it terribly. It probably already took more flow being the lower of the 2 cells anyway.
    18x36 Vinyl IG ~27,000 gal, Intelliflo VF Pump, 300# Sand Filter, Polaris 280 w/Pentair Booster Pump, Pentair EasyTouch w/ IC40 SWCG
    TF100 Test Kit
    SpeedStir

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    UnderWaterVanya's Avatar
    Join Date
    Jun 2012
    Location
    Mint Hill, NC
    Posts
    2,589

    Re: Old salt cell union nut cracked

    Cut off the union at the elbow and then try something like this:

    [youtube:14ggsn7u]JCMQ6OA84OA[/youtube:14ggsn7u]

    If you can find someone with this unique tool it would be another option:

    [youtube:14ggsn7u]DS3ygCWJlPA[/youtube:14ggsn7u]
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

  6. Back To Top    #6

    Re: Old salt cell union nut cracked

    I had the same situation with one of the screw on nuts on the cell of my Pool Pilot Soft Touch generator.
    Fortunately, I discovered the great product Plast-Aid years ago and found it indispensable to both my pool plumbing as well as my aquarium collection. Can be used in wet or dry situations and hardens in minutes.

    Here's the website:
    http://www.plast-aid.com/

    Regards,
    -Gary
    12,000 gallon, tile finish, in-ground pool with spill over spa.
    Pump - Sta-Rite 1.5 HP
    Filter - Hayward Star-Clear C-1200
    SWG - AutoPilot Soft Touch
    Pool Skim
    Zodiac MX8
    BBB since 11/2008
    South Florida

  7. Back To Top    #7

    Join Date
    Jul 2007
    Location
    Brisbane, Australia
    Posts
    874

    Re: Old salt cell union nut cracked

    if you can't restore the ring then heat gun and pliers are your best friends

    something like this should do the job:


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