new pump wiring with SWG

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BPKlein

Bronze Supporter
Jun 4, 2016
120
Lake Dallas, Texas
This topic seems to have been beat to death, but I can’t find the answer I am looking for.

The pool currently has a single speed 1.5hp pump. It has been rebuilt several times, and now needs to be rebuilt again. Instead of doing that, I am going to order a Pentair 011018 variable speed pump.

The pool has no automation. The 1.5hp main pump and the SWCG on one mechanical timer. The SWCG does NOT have a flow protection switch. Pool cleaner (Polaris) on another mechanical timer.

I fully understand the concept of.... 1...supplying power to the new pump full time. (No mechanical timer). 2...leaving the SWCG on the mechanical timer. 3...syncing the timers so that the SWCG is only on when the pump is on.

Here is the question. In the event of a power outage, the pumps internal timer will reset. But, the mechanical timer will not. In this situation, how do I prevent the SWCG from turning on when the pump isnt on? The SWCG does not have a flow safety switch.

Thank You-
Bryan
 
Bryan,

Did you disable the cell's internal flow sensor??? The manual for the SJ says "For added safety, the system uses electronic flow sensing to deactivate the Cell when water flow stops."

While you should not use the flow sensor for the primary safety device, it should work fine for the few times where you need to re-sync the clocks...

Thanks,

Jim R.
 
I did not disable anything, and I know that the manual mentions an internal flow sensor, but I don’t know how it works. Plus, when the unit is opened, the only thing in the housing is the cell. Maybe I’ll call Cirrcupool and ask them.

I was thinking that a switching relay could be wired to prevent the SWCG from coming on unless the pump is on.

Bryan
 
The flow switch is separate from the cell itself. Should be a reducing 't' somewhere in your plumbing with the sensor screwed into it with a wire going from it to your control module. If the flow is too low a light indicator comes on at the control module. The cell owners manual is pretty descriptive.

Take care
 
You are right--- I fat fingered on the Si model! Too many model types!

The manual on the SJ indicates a 'flow sensor' and tthat the power and service lights will blink if insufficient flow is sensed. Have you ever seen that? Tested it?
 
I have not tested it, and the water is too cold to test it until spring. I would like to get this pump installed over the winter. But I’m concerned about the possibility of out of sync timers. Maybe I’ll order the pump, but wait until spring to install it when I can test the flow switch. I have a message out to Cirrcupool about this “internal” switch.

Bryan
 
Marty,

The SJ has an internal electronic flow sensor, so there is no external flow switch...

Bryan,

Once you get your IntelliFlo, which is a great pump by the way, you can simply keep reducing the speed until your SWCG shuts off... Then increase the speed until the SWCG just turns back on and add 100 rpm, just to make sure.. That will be the minimum speed you need to run to generate chlorine. For me this is 1200 rpm..

A relay that "knew" the pump is running would be perfect, but not something that you can buy off the shelf. The IntelliFlo does not have an output that will drive a standard relay, so you would have to have a current sensing relay, that would only turn on when the pump was running. You can use our search box, in the upper right corner of the screen, to find some homebrew options, from other site members, on how to make one.

Thanks,

Jim R.
 
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