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Thread: Compupool CPX-36 Install and Review

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    bobodaclown's Avatar
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    Red face Compupool CPX-36 Install and Review

    Hello All,
    I had a Compupool CPSC-48 that I've replaced with a CPX-36 unit. That's a whole another story, but here's my review of the CPX-36 and install.

    Overall the unit is easy to install with basic electrical and plumbing skills.

    The unit comes with 2 unions designed to fit 2 inch PVC piping and you will need to purchase reducers to fit 1.5 inch piping if that is what you have. They're inexpensive about $2.00 per fitting (you'll need 2 of them). The CPSC series would fit both 1.5 and 2 inch PVC Piping.

    You need to cut out about 14 inches of piping to install the cell. I cut out where I had my other cell. It went in no problem. The don't forget to put on the threaded collars prior to gluing, it might even be better to dry fit it all together first. Unions, collars and the cell.

    I used the blue glue PVC to put it all together it's quick acting.

    The cell comes with a 15 foot cable that has a quick connect to the bottom of the power supply. The power supply is pretty heavy and the power cord is about 6 feet long. The power supply will run on 120 or 240 volts. It comes wired for 240 volts. The conversion is a 5 minute job. Take off the 6 screws from the bottom holding the front panel on and change 2 wires. The actual directions are in the owners manual.

    I've got my unit hooked up to the timer that turns on the pump. Currently I'm running about 10 hours and it's set at 50%. I'll take a week or so to get it dialed in.

    The actual cell design flow is also different, you can see into the cell, and the bubbles coming off the plates but you can't see the plates as easily as you could in the CPSC units.

    I'm also having an issue when my pump is on low (22 GPM) and the power supply at 100% my cell will kick off in about 2 minutes due to the gas forming in the cell. A majority of the water goes straight through the cell with a portion passing over the plates in the full flow. With the pump on high (55 gpm flow) it's not an issue. This isn't an issue if you rotate the cell 90 or 180 degrees. Spoke with Jason at Compupool and he stated this was acceptable.

    When you install the unit the wire connector goes on the the up stream side of the flow.

    Overall I'm happy with the working unit.

    More to follow.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    bobodaclown's Avatar
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    Re: Compupool CPX-36 Install and Review

    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: Compupool CPX-36 Install and Review

    Interesting. I just installed a CPX-36 about 6 weeks ago and the cell is a different design. Mine has a third port that needs to be capped (cap included). The idea is to allow for different installation configurations. Also, my install manual specifed that the part of the cell where the cord is should be oriented "up". Different designs already?

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    24000 gal vinyl IG; CPSC36 SWG, TA-60 Sand Filter

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    bobodaclown's Avatar
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    Re: Compupool CPX-36 Install and Review

    Yes that's what I thought also, on low my cell was filling up with gas too quickly. That's when I called the manufacturer and spoke to Jason.

    In all those configurations the flow detector comes first.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: Compupool CPX-36 Install and Review

    Yes. Flow detector comes first. But also, my manual specified that it should be installed so it is "on top" of the cell, like in the diagram I attached. From your photos, it looks like yours is installed on the bottom. You might try rotating your cell 180 degrees.
    I can't imagine that it would matter, but who knows?


    24000 gal vinyl IG; CPSC36 SWG, TA-60 Sand Filter

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    Re: Compupool CPX-36 Install and Review

    That's the fix if you're getting too much air in the cell. Rotate it. if you notice the cells plates are mounted off set. The water flow is quicker were the cells aren't, so the gas get's trapped in the top portion of the cell. When you rotate it the gas rises, and get pushed out by the water flow because it's less restricted.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    CPX-36 update and Pool Chemical measurements.

    Hello All,
    So far I've been pretty happy with the CPX-36. No issues and it's running like a champ.
    7/1 numbers FC-3, TC-3, CC-0, PH 7.7, TA-70, CH 475, CYA 50, Borates 40.5. Added 3 lbs of CYA to bring it up to 71, and 4 lbs of Boric acid to bring it up to 45. (Purchased 25 lbs earlier in the season just added the rest of the order). Pump runs 10 hours, SWCG is on 60%.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: CPX-36 update and Pool Chemical measurements.

    Is the swg still doing good? I'm debating which swg to buy for the upcoming pool season. I'm stuck between the pentair ic60 and the compupool cpx48. They are the only two with high enough outputs at the right price. Hayward doesn't make one big enough, and autopilot is too expensive. The ic60 is just shy of a grand, and the cpx48 is a couple hundred less. My hold back on pentair is my piece of **** pool light. I wonder about the quality of their other products. Reading about your cpsc experience scares me away from compupool. Any issues with this one? I remember several people talking about their compupool units tripping the internal breaker. That's just unacceptable to me.

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    Re: Compupool CPX-36 Install and Review

    So far I'm very happy with the CPX. compupool is located in Florida about 60 miles from me. Their support has been outstanding. The CPSC series worked well when it ran, but it did have issues. These issues appear to be fixed in the CPX series.

    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: Compupool CPX-36 Install and Review

    That eases my mind some about including compupool in the running. Now just need to continue exhaustively researching both like I usually do.


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

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    Re: Compupool CPX-36 Install and Review

    The cell of my CPX I run upside down. I run on low speed approx 24gpm and the cell would fill with air for to the low flow with the cell inverted it works fine. I did call the service dept and the said it was ok to run that way. No issues. My setup is 115v.

    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: Compupool CPX-36 Install and Review

    One thing I find odd is the fact that their site doesn't list the cpx series. If it replaced the cpsc, why isn't it on their site?


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

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    Re: Compupool CPX-36 Install and Review

    Looks like they've updated their site: http://compupoolhelp.com/cpx-series.html

    Interesting. I did a quick compare between their Infinity series and the CPX series. They're very similar. You can compare the parts diagram and a lot of the parts are interchangeable, the manuals are almost identical. It appears the interface is changed.

    My cell looks to be an infinity cell (prototype). No 3rd plumbing option. But my display unit is the CPX series.

    The Infinty series includes a 3rd year; from the manual: 12.1.6 Third Year. Parts supplied from our facility or returned for repair to our facility at 66% of normal cost of parts and repair labor. Compu Pool will cover the cost of return freight only.

    Compupool are made in Australia with the US distributor being located in Florida.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: Compupool CPX-36 Install and Review

    Update. Control panel went out. They replaced two boards. Under warranty. Overall happy. They're made a board revision. Shouldn't have the issue again.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: Compupool CPX-36 Install and Review

    The controller on my CPX24 started to run really hot after about 6 months of working fine. I sent it in under warranty. 4+ months & boat loads of emails later, I finally got the controller back with what looks to be a refurbished cell. It seems to be working properly again at least.

    I also run at low at low flow, 23gmp, and get lots of air build up in the top of the cell. I've tested out the upside down technique, and it does remove the air build up, but with the sticker on top of the "new" cell that says "Warning the cell must be installed with this side facing upward", I'm a bit hesitant to run it upside down for any length of time.

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    Re: Compupool CPX-36 Install and Review

    Yeah, I understand. That's why I called Jason and documented it here. My cell was filling with gas and shutting down. That was the way to keep it running, about 10 months of operation this way no issue. If it's not shutting down then there's no issue. If it starts shutting down you could call them.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Compupool CPX-36 Install and Review Update

    May 17, 2015
    Hello All,
    I've installed a pool cover. Water temp is 82 or so. All is working well. I'm running about 12 hours a day on low pump speed (approx. 21 gpm), CPX-36 is set 100%. Overall I'm happy with the unit. Had a couple hick-ups that have been resolved. Have young ones now that use the pool every day or so. So yes there is "P" in the pool.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: Compupool CPX-36 Install and Review

    I have a CPSC24 that has run flawlessly for 3 years now. I do not think that their polarity switching does as much to clean the cell as I would like. Now I know my CH is high and likely causes some of my scaling but I find myself cleaning my cell every couple weeks during the swimming season.


    30x20 vinyl IG, Hayward SD60 with Pentair Dynamo 340219 2HP pump, Compupool CPSC24 SWG, Hayward H200FDN heater. APC automatic pool cover.
    Central Illinois

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    Re: Compupool CPX-36 Install and Review

    Quote Originally Posted by bdex View Post
    I have a CPSC24 that has run flawlessly for 3 years now. I do not think that their polarity switching does as much to clean the cell as I would like. Now I know my CH is high and likely causes some of my scaling but I find myself cleaning my cell every couple weeks during the swimming season.
    You can go into the maintenance menu setting and change this. 1) Turn off the power at the source (your electrical breaker).
    2) Hold down the “Superchlor” and “Winter Mode” buttons simultaneously while switching your breaker back on, and continue holding them down for ten seconds. 3) The “Maintenance Menu” should appear on the screen. Press “select” to cycle through the options. Somewhere in there it shows the number of hours between polarity switches. I changed mine to a shorter duration when I was having scaling issues and it helped. However, it evidently decreases the cell life - not sure by how much or where I read that.
    25' x 13' Roman, 12000 gal IGP, Plaster, with 500 gal Spa
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