SWG Possible Problem

[stever13]

New pool been running great about about four months. I have the Aqualogic PS4 system with SWG. As the temperatures have been getting hotter here in Phoenix I have had to adjust the chlorinator percentages higher to keep all the numbers in line. The unit has shown between 2900 and 3200 PPM since a day or two after the SWG start up. All is fine until this morning. Last night I bumped the chrlorinator % from 50 to 60. This morning during the regular pump run the system is saying "chrolintor off - low salt, check salt". So how or why did I go from 3200 to "low salt" with just a small chlorinator adjustment? Your comments are appreciated.

[cwstnsko]

It's normal to have to adjust the % as the temperature rises. That's one of the nice things about the autopilot, temperature compensation.

Have you tested your salt level?

[mrmrk49]

If your SWG cell gets scale it will think it has low salt - most of these systems "measure" salt conc. by reading the cell current vs voltage (= resistance). How's your CH ? Does your system automatically reverse the cell polarity to clean the cell? You could need to manually cleanit

btw, I read in this forum just recently that the chemical reaction which produces the chlorine increases with temperature.

MikeK

[cwstnsko]

Chlorine output may rise, but I believe chlorine demand and consumption rises faster. It only takes 5-7% duty cycle to maintain FC in my pool in the winter, it takes about 40% to keeep up in the summer.