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Intelliflo pump and in-line chlorinator

13 years ago

Anyone have issues with in-line chlorinator / feeders not getting enough flow to operate properly while Intelliflo VF pump runs at low speeds ?

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Comments (5)

fighting_irish
13 years ago
Make the chlorinator top feed instead of bottom feed.
dalehileman
13 years ago
Forgive me Bruce if this is slightly OT but might prove pertinent anyhow. Just a couple of days ago my crew finished and fired up our new Intelliflow installation. Sure enough just as I had feared, at lowest speed the output of our sand filter wouldn't support the requirement of our Polaris booster which I'm advised might self-destruct if pressure here goes negative

Fortunately however the leader of our crew, a high-level executive in the Aerospace Industry whom I shall call Ike, knew exactly what to do, programming the controller so that the Intelliflow switches to a higher speed (incidentally 2300 rpm), just a few minutes before booster is set to come on

So far the only drawback to our new system is that I've been deprived of the ability to independently control the booster, which I sometimes need to start earlier when the bottom is especially messy or which I'd like to stop occasionally, pulling out to adjust its jet or make repairs

Ike has promised to address this issue upon his next visit. Meanwhile however, Irish's suggestion has some merit. I'm not familiar with chlorinators but I'm guessing in my case I might connect the booster at the input of the filter instead of output

Critical issue might prove whether flow is even great enough at this point for the booster which really sucks (no pun intended)
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Hi All, I would appreciate if some one help explain whats going on with my Intelliflo VF pump. I have a VF that was running for about 22 Hrs turning a 20K pool once a day. It was running at around 16 GPM and it ran fine for over a month. 16GPM x 22hrs ~ 20K gallons.. Perfect. Then I introduced solar heating and programmed feature 3 on the pump to 30 GPM for 5 Hrs a day. The rest of the time the pump is scheduled to run at 16 GPM. It starts at 6.00 AM and runs at 16 GPM till feature 3 kicks on at 11.00 AM. So thats 5 Hrs which equals 16x60x5 = 4800 gallons From 11.00 am to 4.00 pm feature 3 runs at 30 GPM. So thats 30x60x5 = 9000 gallons. At the end of feature 3 total gallons filtered = 4800 + 9000 = 13800 The pump then goes into power save/sleep mode which it is supposed to do when it thinks its finished the cycle sooner than necessary. But there is still about 6200 gallons to filter which means the pump should have ramped down to 16 GPM and run for at least 6 hrs. Am I calculating something wrong ? Can some one explain to me whats going on ? Pentair's "So called" Technical support had no clue and they rudely hung up the phone saying that no one can say what the computer calculates. This is exactly what they said. Pentair has the worst technical support team ever. Please help..
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First thing first. Larger filter = less operating pressure on the same flow rate. Second thing. In the absence of a visible leak in your equipment pad which will cause the filter to drain back, you have a classic gravity feed. This can happen simply by design of the system. More often when the equipment pad is slightly elevated above the pool line. On the other post, yes, you don't program gpm into the filter mode of an IntelliFlo directly. It is a calculated number based of the cycle, volume and hours. You'll need to install a full flow check valve in the line between the pump and filter. Use a Pentair of Jandy model, 2.5 x 2.0 CPVC. Now the issue. You put flex line there and that is going to cause problems. The weight of that valve may overwhelm the pipe. This line should be rigid pvc and you will certainly develop a leak later if it is glued into the backwash valve. On the other post. Yes, you don't program gpm on an IntelliFlo filter mode. It is a calculated number based on cycle, volume and hours. Those numbers are not known until you have your desired gpm and the final operating flow is + - a gpm or 2. The FEATURES do account for total daily volume but not 1 or 2.
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Maybe I'm getting too anal here but, I have a intelliflo VS 2 pump, FNS plus60 for a 30K gal pool,no heater . I want to take my CL200 offline with 1" pipe with a check valve and energy filter. I also need to plumb for my Polaris 360 (no booster). Both should be piped from between the pump and filter to return side. Should I plumb with two separate lines off main between pump and filter or one line and tee off 1" to chlorinator and 1 1/2" to cleaner.? Either way I don't believe I create an issue for the pump. I want to take the CL200 off line due to the restriction it creates to the 3 returns which have newer eco friendly eyeballs. If I'm getting crazy and overthinking please let me know... It is all about flow though, no? Thoughts by those in the know please!!
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fighting_irish
13 years ago
Dale once again your response has nothing to do with what was asked. There was no mention of a booster yet you got off into some rant about booster pumps. As you stated you know nothing about chlorinators. So please if you have no valuable input do not reply.
repair_guy
13 years ago
Assuming you have programmed the pump to run at a high speed for cleaner, the top feed approach is best for the feeder. It easily converts by removing the plug and swapping out the hose.

On the dude with the Polaris issue, how about an actuator to divert through a control system that specifically rotates to feed an appropriate amount of flow down the sweep line to drive that sweep. It's a bit unproductive to have an IntelliFlo AND a booster for a sweep.

Better yet, I beleive the Letro booster for 2011 is going to be variable speed so check that one out. It's a brilliant idea.
dalehileman
13 years ago
Guy thanks for not attacking me mercilessly, thought the Irish were supposed to be so easy going. I had assumed that his references to "top" v "bottom" feed might have referred to the filter, where pressure at the bottom might be much lower but apparently was mistaken which will no doubt cause thousands of GW participants to spend their life savings fruitlessly for which apologize profusely but highly recommend for his benefit the occasional use of kava kava or St John's wort

"...how about an actuator to divert through a control system that specifically rotates to feed an appropriate amount of flow down the sweep line....."

Thank you Guy for that suggestion. I had considered a scheme similar to what you suggest but instead connecting booster at input of filter where pressure is much higher, thereby obviating the need for additional gear. However with Vf at low speed wasn't sure even there it might not be adequate to serve the needs of the booster

However the system our engineer-expert Ike came up with had an unexpected benefit: During the hour of sweep with higher flow much of the flotsam is better carried to the skimmer port

Bruce sorry for all the OT but Guy to avoid further ruffling Irish's dander I'd be most happy to further discuss your proposal as dalehileman@me.com or for the benefit of Polaris owners you might consider opening a new thread specifically to discuss the dangers of switching to vf without making special provision for the booster

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