My unit is like the Aquatrol and does have a timer. I am using it to power my pump out of convience and my old timer was flaky.

I don't have the PPM salt other than going off of the display.

hardness 200
TA 130
CYA 85
PH 7.7 ( I added acid a day before starting the salt)
ch 3

I tested this 1 day before doing the salt ..

My display on the SWC is saying 3600 which I think is high. I can't find my book right now so I am not sure. My pool is about 8500 gallons and it called for 216lbs of salt and I only added 160lbs .. I bought 200 and was going to do the last bag slow, but I am going to stop since the display is saying 3600. I will wait another day or two and see if the # on the display drops. We had a heavy rain and my pool went from mid skimmer to top of the skimmer.