Field calibration for Intellichlor IC40 SWG

I am interested in field calibrating my Intellichlor IC40 SWG.

The only suggestion I can make, is to call Pentair: 800-831-7133

There has been a Intellichlor calibration procedure floating around, but I don't have a copy, and can't find one. It's not clear if this procedure even applies to recent units.

Sorry.