Spring came. And again there was a need to clean the windows. When we lived in an apartment, the idea to buy a robot for the windows (and a robot for the floor had been running for more than a year) arose, but it did not flow from the area of curiosity to the practical area. In the house, with the advent of stained-glass windows, this thought became simply obsessive. Work began and in the end I settled on my 388m. Actually, the principle of operation is the same for everyone: two working surfaces, one of which in turn serves as a vacuum suction cup, the second at this time, making circular movements, rubs the surface. Robik, having risen to the upper cut of the window, begins to move to the left to the right with a gradual decrease. In this case, one unit of the window area first passes the first circle with a rotational movement, then after lowering, the second circle also with a rotational movement. We have repeated passage of two rags along the bottom point of the surface. As a rule, after the first pass, when the robot descended and gave a signal, I press the button again for a second pass. Not looking))). So we increase the number of passes. What I want to pay attention to: be sure to spray both rags with water (cleaner) before starting work, for better adhesion. With a bad grip, the robot definitely slips and refuses to work. My workflow: 1. Dry pass. The sprinkler is off. 2. Wet pass with cleaning agent. At the same time, I can additionally spray on the surface of the window. 3. Change of rags (nozzles and two included) 4. Passage dry. 5. Go to the next window (reverse surface) 6. Dry passage without changing rags after the previous window. 7. And so on in the specified sequence. Do not limit the number of passes. If you don't like pressing start again, no problem. What else would you like to pay attention to? No matter how much I drove with a cleaning agent from cheap to expensive, you look at the window clean, the sun will come out as a ray will let it go and the glare is circular. Eliminated by cleaning with plain water instead of detergent.