I have a CompuPool SWG plumbed in-line with the pool return only and today was the first day we used it. The PB did it this way so that we could not over chlorinate ourselves when in spa mode (single pump runs both pool and spa). But, the SWG is hooked to the pump timer so that it comes on whenever the pump is on. So technically, when I go out to switch into spa mode, I need to turn two valves, turn on the pump, turn on the heat and turn off the SWG. I know that we will forget to turn off the SWG sometimes, and so I did it on purpose to see what happens. The SWG comes on and starts working. I can tell because the cell starts producing bubbles - lots of bubbles. It runs for about 3-5 minutes before it detects the no flow situation and shuts down.
Am I doing any damage to the cell over those 3-5 minutes?