The new NRG range ensures constant high suction performances thanks to the Semi-Automatic Filter Cleaning System. The system can be manually activated by pressing “CLEAN” button. For maximum efficiency you can also press the flexible hose against the specific hole or cover it with your hand. The NRG range can be used for general applications and removing both dust and liquids. Compared to normal vacuum cleaners, this system enables you to quickly clean the filter without removing it from the vacuum.