Aqualogic automation system with new VSM that has it's own schedule

[ehaberle2]

I have a 19000 gal gunnite saltwater pool being controlled by an AQL-P-4. I just replaced the single speed motor with a Century Electric VGREEN EVO - EVC225. it has its own programming on the motor. My expectation is that I can just have my automation on all the time and the motor will cut on an off on its own, or does that create a problem with the saltwater turbo cell? I am only clorinating at 60%. Looking for some advice if someone has run into this before.

Thanks,
Eric

 

[ajw22]

Welcome to TFP.

Your problem with that setup is it relies on the flow switch to turn off the SWG when the pump is off. The flow switch should not be the primary safety switch for the SWG, it should be the secondary with a timer or automation powering off the cell when the pump is not running.

We see flow switches failing ON often.

Cells have been known to explode when they are powered with the pump off.

 

[JamesW]

Use the system timer to turn the SWG off when the pump is scheduled to be off.

Or, you can just run the pump 24/7 as that is usually the most efficient or you can operate the pump as a two speed pump and use the pump inputs to change speeds.

 

[1poolman1]

I have a 19000 gal gunnite saltwater pool being controlled by an AQL-P-4. I just replaced the single speed motor with a Century Electric VGREEN EVO - EVC225. it has its own programming on the motor. My expectation is that I can just have my automation on all the time and the motor will cut on an off on its own, or does that create a problem with the saltwater turbo cell? I am only clorinating at 60%. Looking for some advice if someone has run into this before.

Thanks,
Eric

As that motor can use on/off switching from a time clock, or relay, to start its internal programming, you could have both the SWG and pump on the same relay, it can handle the load, and they will be powered on and off together. Just be sure that the SWG powers off at the same time the program ends and there will be no issues. Not likely to be one anyway, but if you don't have to rely solely on the pressure switch that is an added measure of safety.

 

[ehaberle2]

Guys! Thanks so much for your responses! I’ve been concerned about the SWG and a no flow condition. I also must have had a lightning strike because my AQL-P-4 no longer keeps good time. For about six months I’ve been turning it on and off manually. I think I may opt for either the continued manual on/off or the 24/7 at the lower speed. I can’t believe how quiet the ECV225 when it slows down.

Thanks again for the feedback, it’s very much appreciated.

Eric