The Oscar has all the necessary components here to create the perfect brewing environment for espresso. The brew group is made from a casting of marine grade brass which offers the industry’s best heat conducting and corrosion resistant material. The engineers at Nuova built this brew group to allow the heat exchanger line from the boiler to passively recirculate so that it is always ready to brew. They also included the coveted 3-Way solenoid valve which not only prevents excessive pressure but also releases built-up pressure at the end of brewing to dry the espresso puck and keep it from dripping. Boiler Protection Features To ensure long life and protection against over heating and burnoutNuova Simonelli built the Oscar’s boiler with a safety feature called Auto-Refill. This system keeps an eye on the water level in the boiler and when the level falls below a certain pointthe computer controlled water level system automatically adds more water. If the machine should run out of water and the Auto Fill system was unable to refill the boilerthe computer will automatically turn the machine off to prevent overheating and damage to the heating element. Durable Construction The Oscar’s steel frame is protected by a hardened ABS plastic exterior that will withstand even commercial use. It may not have the look of stainless steelbut it will never corrode; it is easy to clean and scratch resistant; and it hides fingerprints and dirt that quickly show on stainless steel. Its drip tray comes with a punch-out disk for hooking up a direct drip tray drainage line. Also the drip tray can be flipped over to accommodate both small and large cups. On the top of the unityou can store up to 12 cups that will become warm from the radiant heat off the boiler. – Water tank 23 L Power – 1200 W. – weight 14 Kg. Size: 300 x 400h x 400mm