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Thread: "Install IntelliChlor SCG cell vertically for best performance"

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    "Install IntelliChlor SCG cell vertically for best performance"

    On my new 30K gallon pool, I've had a Pentair IC40 cell installed and running for a couple weeks now (for the 3 months prior to that I had the "dummy" pipe cell installed in its place, and was manually chlorinating). I'm still dialing the SWG in but currently with my CYA at 80ppm I'm running the SWG at 100% duty cycle from 10am to 7pm (9 hours) to maintain FC at ~ 6ppm. I would have been better off with the IC60, but the IC40 is what the builder installed and I didn't know any better then!

    The issue that I need help with is that I'm finding the SWG flow indicator is intermittent at pump speeds lower than 1725 rpm. I define intermittent as I set a pump speed and watch the SWG flow indicator for 15 minutes, and if it goes red I call it intermittent. So currently I have the pump programmed to run at 100 rpm above (1825 rpm) which is using a little over 300 Watts of power.

    I was hoping I could run the pump at a speed where it would use less than 200 Watts like others have, and am looking for anything I can change in the plumbing. It was not plumbed in per the installation guide recommendations (my guide is dated February 2016), there is a 90 degree elbow 6" from the SWG inlet, and a Pentair check valve 6" from the other side of that same elbow. There is also a 90 degree elbow 5" from the SWG outlet. I removed the flapper/spring assembly from the check valve but that didn't give me any improvement.

    So I'm considering re-doing the plumbing to put the recommended full 12"-18" of straight pipe in front of the SWG cell inlet "for best flow sensing" (per the installation guide). But the guide also says, "Install IntelliChlor SCG cell vertically for best performance" (the title of this post).

    So while I'm at it, should I install the cell vertically? Does anybody know or have a theory why this statement (to mount vertically) is in the manual?

    Maybe when mounted vertically, the flow is more "laminar" which allows the flow switch to operate better? Or maybe mounting vertically allows the chlorine gas to more easily escape the cell? Just guesses, not sure. I called Pentair tech support and didn't really get a solid answer. Just wonderin' what you all think.

    Thanks,
    Mike
    Finished in 2017 - 30K Gal, IG, 60' x 11' Rectangular Lap Pool (4' to 6.5' deep) with attached Spillover Spa, Hydrazzo plaster finish. Pentair Equipment: Intelliflo 2 VST 3 HP VS Pump, CCRP200 Cartridge Filter, MasterTemp 400 NG Heater, IC40 SWG, TF-100 with SpeedStir and SampleSizer, K-1766 Salt Test, Dolphin S300i Robot Cleaner, Pool Blaster MAX Li Vacuum.

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    Re: "Install IntelliChlor SCG cell vertically for best performance"

    Here are some pics of equipment pad. SWG plumbing:
    cell_DSC_0581.jpg
    Heater outlet to Pentair check valve (removed flapper/spring assembly) and then to SWG:
    heater_DSC_0582.jpg
    Overall shot of equipment pad:
    overall_DSC_0583.jpg
    Finished in 2017 - 30K Gal, IG, 60' x 11' Rectangular Lap Pool (4' to 6.5' deep) with attached Spillover Spa, Hydrazzo plaster finish. Pentair Equipment: Intelliflo 2 VST 3 HP VS Pump, CCRP200 Cartridge Filter, MasterTemp 400 NG Heater, IC40 SWG, TF-100 with SpeedStir and SampleSizer, K-1766 Salt Test, Dolphin S300i Robot Cleaner, Pool Blaster MAX Li Vacuum.

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    Mod Squad Jimrahbe's Avatar
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    Re: "Install IntelliChlor SCG cell vertically for best performance"

    Mike,

    I can't help with the vertical question, except to say that the SWCG manual shows one installation in the vertical position.

    If me, I would do two things..

    1. Get the SWCG raised up to the same level as your return valves.. (I would plumb in the horizontal, just like it is, only higher)

    2. Install a heater bypass. (if you are going to have to re-plumb anyway, you might as well do it right)

    My gut says moving, or repositioning, the SWCG is not going to have much effect on the flow switch operation. Assuming that is true, you could bypass the heater which will be off most your season in Florida anyway.. This should increase the flow.

    My SWCG has less input pipe than yours and about the same length of output pipe.. I run at 1,200 RPM, which is 100 more than what it takes to "just close" the flow switch. My filter pressure is only about 2 lbs. at 1,200 RPM, what is yours?

    Thanks,

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    Mod Squad mknauss's Avatar
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    Re: "Install IntelliChlor SCG cell vertically for best performance"

    My IC40 install needed the higher flow rate as did Mike's. After two years the temperature sensing died on the flow switch and Pentair sent me a new one. When I removed the original flow switch from the unit the flapper (flimsy part that gets pushed by the water flow to activate the switch) was bent! I carefully installed the new one and now I can run my pump at 1400 rpm (it took 1800 rpm before) to activate the flow switch. I have 12 inches straight run before the SWCG but it is horizontal. I suspect the manufacture is not real careful when installing the original flow switch.

    Hope that helps!
    6000 Gallon IG Fiberglass with integrated Spa;Pentair CCP240 Cartridge Filter with Pentair Intelliflo VS Pump and HTR250 heater. IC40 SWG. EasyTouch 4. Dolphin Active20 Robot "Roadrunner", TF 100 Test Kit w/SpeedStir!
    CLICK HERE to Become a TroubleFreePool.com Supporter!! Pool Math App
    Marty

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    Mod Squad Jimrahbe's Avatar
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    Re: "Install IntelliChlor SCG cell vertically for best performance"

    Quote Originally Posted by mknauss View Post
    My IC40 install needed the higher flow rate as did Mike's. After two years the temperature sensing died on the flow switch and Pentair sent me a new one. When I removed the original flow switch from the unit the flapper (flimsy part that gets pushed by the water flow to activate the switch) was bent! I carefully installed the new one and now I can run my pump at 1400 rpm (it took 1800 rpm before) to activate the flow switch. I have 12 inches straight run before the SWCG but it is horizontal. I suspect the manufacture is not real careful when installing the original flow switch.

    Hope that helps!
    MK,

    I have sitting next to me the bottom part of an IC40 flow switch that has the magnet attached. I had an flow failure at a rent house and when I took out the cell I found that the flow switch had broken in half...

    The cell was about about two years old.

    Thanks,

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    Re: "Install IntelliChlor SCG cell vertically for best performance"

    Jim,
    At 1200 RPM (88 Watts) filter pressure reads 3 psi, at 1825 RPM (303 Watts) reads 9 psi.

    Good idea about raising up the SWCG, makes sense. The natural gas (not hooked up yet) heater is mainly intended to heat the spa only, may decide to heat the pool on Christmas Day but at 30K gallons won't be cheap! For what it's worth, pool builder said they plumbed it with flow always going through heater because it's a salt pool and they didn't want stagnant salt water sitting in the heater. I assume a heater bypass would be a valve allowing to bypass the heater, just as it sounds, I'll look into that, thanks.
    Finished in 2017 - 30K Gal, IG, 60' x 11' Rectangular Lap Pool (4' to 6.5' deep) with attached Spillover Spa, Hydrazzo plaster finish. Pentair Equipment: Intelliflo 2 VST 3 HP VS Pump, CCRP200 Cartridge Filter, MasterTemp 400 NG Heater, IC40 SWG, TF-100 with SpeedStir and SampleSizer, K-1766 Salt Test, Dolphin S300i Robot Cleaner, Pool Blaster MAX Li Vacuum.

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    Re: "Install IntelliChlor SCG cell vertically for best performance"

    When my low flow light comes on, I clean out full leaf canister and hose off the cartridge filter . So far, it has always cleared it up.......
    35,000 Gal. - 40x20x8 - Plaster - SWG Pentair IC 60 - Barracuda G3 Vacuum - Hayward c1750 Cartridge Filter - Blue Torrent VS 1.5hp pump - Pool is 45 years old.

    "I'd build a deck over my pool if I didn't have a SWG"

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    Re: "Install IntelliChlor SCG cell vertically for best performance"

    MK,
    Hmmm.....bent flow switch flapper thingy.....I'll have to look at that! This weekend I lowered the maximum speed setting of my pump but before that it was priming at full speed 3450 rpm, I wonder if that could have possibly bent the flapper? Or maybe as you say it came a little more bent from the factory.....I'll take a look at that, thanks for sharing your experience!
    Finished in 2017 - 30K Gal, IG, 60' x 11' Rectangular Lap Pool (4' to 6.5' deep) with attached Spillover Spa, Hydrazzo plaster finish. Pentair Equipment: Intelliflo 2 VST 3 HP VS Pump, CCRP200 Cartridge Filter, MasterTemp 400 NG Heater, IC40 SWG, TF-100 with SpeedStir and SampleSizer, K-1766 Salt Test, Dolphin S300i Robot Cleaner, Pool Blaster MAX Li Vacuum.

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    Re: "Install IntelliChlor SCG cell vertically for best performance"

    What about the "Filter Ring" plastic grid thing that inserts into the intake of the IntelliChlor cell, did you guys leave that installed in your setups? It's supposed to protect the flow sensor switch from debris in the pipes. It looked like it could restrict flow a little.
    Finished in 2017 - 30K Gal, IG, 60' x 11' Rectangular Lap Pool (4' to 6.5' deep) with attached Spillover Spa, Hydrazzo plaster finish. Pentair Equipment: Intelliflo 2 VST 3 HP VS Pump, CCRP200 Cartridge Filter, MasterTemp 400 NG Heater, IC40 SWG, TF-100 with SpeedStir and SampleSizer, K-1766 Salt Test, Dolphin S300i Robot Cleaner, Pool Blaster MAX Li Vacuum.

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    Mod Squad mknauss's Avatar
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    Re: "Install IntelliChlor SCG cell vertically for best performance"

    Yes mine is installed. It has alot of open surface area so doubt it restricts flow. But you never know ......
    6000 Gallon IG Fiberglass with integrated Spa;Pentair CCP240 Cartridge Filter with Pentair Intelliflo VS Pump and HTR250 heater. IC40 SWG. EasyTouch 4. Dolphin Active20 Robot "Roadrunner", TF 100 Test Kit w/SpeedStir!
    CLICK HERE to Become a TroubleFreePool.com Supporter!! Pool Math App
    Marty

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    Mod Squad Jimrahbe's Avatar
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    Re: "Install IntelliChlor SCG cell vertically for best performance"

    I took mine out..

    If something that big is in my pipes after it gets past the filter than I've got a lot bigger problems than a flow switch issue...

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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