Hey Panic. Do you leave the M600 in the pool or take it out after running? I probably over-worry about my M500, so I run a 3.5 hour full cycle, then take it out, clean out the baskets and filters, rinse the hose and the cleaner inside and out with fresh softened water, and store it on the caddy with the lids open to dry. Then I put a chair cover over the whole thing to protect from the sun. It is counter-intuitive to me to leave a machine with many moving parts made of various plastics plus an electric motor, soaking in a mixture of chlorine, calcium and salt water plus sun for six or seven hours a day. (I don't have a SWCG, but since I use liquid chlorine, the salt level is ever increasing--currently at 1600ppm and increasing at about 75-80ppm per month.)
I ask this because I see the M600 has a feature to bring it to the surface and edge of the pool for easy retrieval. That sounds like a subtle hint that Maytronics wants you to take it out of the pool for storage--but doesn't want to outright advise that approach to its use. You know that U.S. navy submarines--designed to exist in salt water--still have to be put in dry dock periodically. No matter what material you use to seal moving parts, water has a way of getting through eventually. That's my thinking anyway, so I treat my M500 like it was expensive and fragile--because it was and is.
