... over the water upper mark line always.2- Press ON/OFF then the power indicator lights, and ... the machine is ready for work.3- Press ozone button then the ozone indicator lights, ozone ... . 3. Vacuum and spray 1. Connect the power, press the “Vacuum & Spray” switch, and select the function ... Maybe we will give you a satisfactory reply ! High-frequency ,Hot Ozone steamer&,Spray and Vacuum,4 in 1 Beauty ...