Control of SWCG

[akenis]

Moved from here.

So, after I had the original Hayward single speed pump burn up I decided that upgrading to a VS pump made sense to help cut down on the energy expense with the pool. I went with the Pentair Superflo VS line for my 14000 gallon pool. It has worked great since last year, although I did find that the pump did not like to play nice with my Eaton BR GFCI 240V breaker. So, made a small change and installed a Siemens subpanel to put in the Siemens 240V GFCI which is rated to play nice with this pump. That seems to have been the right combo. (There is a surge breaker in the panel as well to protect the expensive pump.

Moving forward, looking at getting a SWG in with the pool to help cut down on routine maintenance of the daily chlorinating. Reading on here I am convinced SWG is the way to go. So, did some research on the types out there and decided to go with the Jandy Truclear. My pool is a 14000 gallon type and this SWG is rated for 35000 gallon.

My only question here is hooking up the Jandy to play nicely with the Pentair. The Jandy instructions say to connect it with the pump on the timer. My pump has a built in timer so there is no mechanical timer in use anymore (removed and gone). Just wondering if anyone here has something similar and would say how they hook up and run their SWG with their VS pump. I plan to have the Jandy wired to it's own breaker to keep it seperate from the VS pump line to ensure surge protection for it as well.

So what did u end up doing? Just bought house with this set up. VS pump is wired through old school timer with continuous power, so pump start times/rpm/duration is controlled by pump.
There are no trippers on the timer, so the Jandy has continuous power. It shuts down based on no flow sensor. Thinking I should add some trippers to give it power from 9-9, as the pump runs from 8-10.

 

[wireform]

So here's what needs to be done. Have the pump run through the hot side of the timer so regardless what the timer does there will always be power to the pump. Then use the timer function to control the SWCG bringing it online after the pump is set to run and also shutting it off before the pump is to be shut off. The flow switch becomes a secondary safety so not to have the SWCG run without pump running.

 

[Jimrahbe]

A,

The main problem is that a SWCG needs to Safety Devices.. The Primary safety device is to remove the power from the cell's power center when the pump is off.. The Secondary safety device is the flow switch.. You need two safety devices as if the cell is on when the water is not flowing it can explode. While it does not happen often, we have seen it several times here at TFP..

Using just the flow switch is kind of like driving around with your air bags off.. You could drive thousands of miles without any problems.. Right up to the point of the crash..

Thanks,

Jim R.