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Thread: Rainbow 320 Questions - Bad Seal and Control Valve Placement Question

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    Join Date
    May 2014
    Location
    Chesterfield, MO
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    13

    Rainbow 320 Questions - Bad Seal and Control Valve Placement Question

    Hi all. Thanks in advance for your help.

    Question 1. I am getting a leak from the bottom of the chlorinator, I think from seal "R" in the picture. What can I do to tighten this just a bit more? I've replaced the seal, obviously. Any home remedies?

    Question 2 might solve question 3, so let's see what you think. I'm feeding a 35,000 gallon pool with this chlorinator. When I bought the house the control valve assembly was connected to the lower assembly. Shouldn't it be up top? The chlorinator sits on ground that is approximately 6' below water level.

    Question 3, if the control valve is in the right place (lower), then how the h*ll do I replace the hose and not have it kink on me? So frustrating! I've tried hot water with no luck. Others have recommended regular flex pipe from Home Depot. Thoughts? Again, it's irrelevant if I should be connecting my control valve to the upper assembly.

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    35k Gallons, IG Gunite, Sand filter, 1980's build

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    Patrick_B's Avatar
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    Jun 2011
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    Midland TX
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    Re: Rainbow 320 Questions - Bad Seal and Control Valve Placement Question

    Go with llonger piece of tubing. Or a stiffer one.

    My most sincere recommendation would be a switch to liquid chlorine or Salt Water Chlorine generator.
    TFP Moderator
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    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

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    Join Date
    May 2014
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    Chesterfield, MO
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    Re: Rainbow 320 Questions - Bad Seal and Control Valve Placement Question

    Well I ended up connecting to the top with a new piece of tubing. That problem is solved. Just need to dial it in now.

    Back to question 1. What can I do if the seal seems fine but I'm getting some leakage? I don't want to over-tighten it obviously.

    Thanks.
    35k Gallons, IG Gunite, Sand filter, 1980's build

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    Join Date
    Mar 2015
    Location
    Sugar Land , TX
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    388

    Re: Rainbow 320 Questions - Bad Seal and Control Valve Placement Question

    Try to take apart and really clean the rubber seal and the chlorinator. Check seal for any tears or dirts ( should be smooth) Check chlorinator for any cracks or pits. Then lube that seal and gently tighten. Hope this helps. You could by pass this with a Stenner pump install.
    8500 gallon IG Pebble Sheen with Spa. 3hp Pentair VS Intelliflo ( pool ), 3/4 hp WhisperFlo ( water feature ),Pentair Racer, 400K Pentair heater, Pentair 500sqft Cartridge filter, EasyTouch 8, Stenner 45mp2 15gallon wired to ET8

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