I operate three pools using Aqua Rite systems. Although the system is supposed to shut down over 3700ppm, I had one pool that was mistakenly raised to 4200ppm. The cell did NOT shut down, but rather continued as per normal, although I had to drop the dial to minimum (5%) to keep the FC down under 5. So interestingly, sometimes they do not shut down!
When you first recieve your Aqua Rite, there is an orange sticker that may have been removed by now, which directs you to do two things:
1) Set your cell time! Push the Diagnostic button until you see "T-##" and change it to match your cell type (T-15?).
2) Let the Aqua Rite run for 24 hours in the Off position to let the salt reading calibrate. THEN turn the system on.
If you haven't followed these steps, you may want to try. If you lower your salt level severely by dilution, you may want to turn the system off for 24hrs to let it recalibrate as well.
Also, since it is not documented, the settings shown when you press the Diagnostic button are:
- Salt ppm (default display, will return here if left alone for several seconds)
- Temperature (in F by default, there is a setting to change to C if you desire)
- Instant Salinity (shows 0 if cell is not active)
- Dial Setting - the only true way to see what you are set at - the label can be off by up to 15% on some units. (Shows like "25P" for 25%)
- Current Voltage
- Current Amperage
- Cell Type
- Something else I can't recall now
Knowing this helped me out some in my maintenance - especially the 4th item!
I THINK I have those in the right order (I am unsure about #3, it may be something else and Instant Salinity in another position)... I have it written down somewhere. Maybe someone else can confirm.