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Thread: Rust on Stainless service panel after SWG installed

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    Rust on Stainless service panel after SWG installed

    27" round, AGP, 2nd full summer. I put in a SWG 3 weeks and noticed on my stainless steel service panel, very small rust spots, all over it. They look like rusty blemishes, very much surface rust at this point. After watching it for a week, they are getting bigger. I am afraid that in another 6 weeks, the entire panel will be rusted. I have no other rust issues; screws on my steps, or on the decking. Is the salt responsible for this? All chemicals are where they need to be. Salt is 3500ppm. I do need to do some bonding work as I have not bonded the SWG or the pump while the pool and heater are bonded together. Any ideas??

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    Join Date
    Apr 2007
    Location
    Ft Lauderdale, Florida
    Posts
    1,455

    Re: Rust on Stainless service panel after SWG installed

    I actually think Global Warming is responsible, but without facts, I would start by saying, YES, you do need to bond your equipment.
    A complete test result can reveal much as to what's going on, so if you can give us the parts per million for the following, it will help.
    Free Chlorine
    Total Chlorine
    Total Alkalinity
    Calcium Hardness
    Cyanuric Acid
    Salinity Level

    That's a start anyway.

    What type of chlorine did you use before the SWG? Where are you located (have you experienced alot of rainfall over the last month)? Where is your service panel located in relation to the pool?
    Sean Assam - Sean@teamhorner.com
    National Accounts and Commercial Products Manager
    AquaCal Heat Pumps www.aquacal.com
    AutoPilot Salt Chlorine Generators www.autopilot.com

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    Re: Rust on Stainless service panel after SWG installed

    not all stainlesses types are rustproof
    thanks
    gary

    24ft x 54" aquasphere mission agp, cartridge filter, 1.5 hp hayward, TF-100, BBB method, pool install July 2010

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    Re: Rust on Stainless service panel after SWG installed

    CYA is high at 100, FC is 4.5, CC .5, PH 7.5. I have not tested TA and CH this week. Salt is 3500ppm I live in the west Chicago suburbs. The service panel is on the SW side of the pool. We have had pretty hot, dry weather the last 3 weeks. I was using trichlor until the SWG went in. I will do the bonding this weekend (time constraints) but, could that have something to do with it or is it more likely poor quality stainless steel?

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    Join Date
    Apr 2007
    Location
    Ft Lauderdale, Florida
    Posts
    1,455

    Re: Rust on Stainless service panel after SWG installed

    If TA and CH are both low, your water balance (saturation index) would be corrosive, so splashout water can cause corrosion. Also, any water splashing out and landing on your service panel will eventually leave a higher than normal salt residual...hence the question on rainfall. Rainfall or rinsing off your service panel periodically, should ensure that it will not experience damage from corrosive water balance or salt concentrations.
    And yes, it sure could be due to poor quality stainless steel.
    Sean Assam - Sean@teamhorner.com
    National Accounts and Commercial Products Manager
    AquaCal Heat Pumps www.aquacal.com
    AutoPilot Salt Chlorine Generators www.autopilot.com

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Rust on Stainless service panel after SWG installed

    CYA at 100 could actually be much higher. The most common CYA test will read CYA levels higher than 100 as if they were 100. I recommend you get CYA down to 90 at the highest by replacing water.
    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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