How to Use. 1. pick up the tornado and check it if in good station, ex. Connector, adjust knob, finger frip, brush or horn head etc. 2.Check air compressor rate 6-8kg/cm2 (0.6-0.8bar), no exceeding 10kg/cm2 3.Check if the cleaned object is capable force 10kg/cm2. Do not point to human body 4.Keep a distance 1-10cm from the cleaned object. 5. Do not point to human body