I can't believe I did this! Two weeks ago I had guests staying over the weekend and uisng the pool. During one afternoon I saw the SWG flashing a red error code, low salt. Unlike the directions state I added 40lbs. salt into the pool without diconnecting the vacuum robot and TURNING OFF THE SWG. Well after the SWG probes got exposed to a direct shot of undissolved salt it literally ate away the magneisum plates. I'll take a photo and post it later. I had a service eror code and it would not rerstart. A simple meger of the titamnium plates showed OL conductivity and last night I tore into it as I already ordered the replacment unit. One titanium probe was 40% eaten away the other was all together missing with the wires dangling where the piece used to be bolted up! Its hard to me to fathom how one of the hardest metals just simply dissolved but in hind sight think of a metal object subjected to electricity and then sand blasted by salt going at at 3000gph. The salt literally ravaged this thing. The forward copper plates, electrical device etc. are all good so I'll save the rest of the unit for parts if I ever need it. Lesson learned read directions!