Using the Nella 15 - Division Automatic Bun Rounding Dough Divider is easy. First, make sure it's properly plugged into a 220V 3 - Phase power source. Then, turn it on and use the control panel to set your preferred pressing, rounding, and shaping chamber opening times. You can also select one of the 9 stored programs. Place the dough into the machine, and it will automatically divide and round the dough for you. When you're done, press the knife cleaning button to keep the knife in good condition. As for maintenance, regularly clean the stainless - steel parts with a mild cleaner to keep it looking new. Check the overload protection system and emergency stop button periodically to ensure they're working. Be careful when handling the machine to avoid any damage. If you have any questions, refer to the included manual.