Please read this manual in order to use the dental unit correctly. If you have any special requirements, please contact our dealers. I. In order to reduce the possibility of fire and electric shock, please do not place the device in a humid place, and please do not open the box. If you need to repair the machine, please find a professional service person. bille over supery, no onlals our to the unis a esay lead to fia please immediately cut 3.If water entering into the unit,it may cause electric leakage, please immediately disconnect the power, and contact local dealer or after-sales service department. 4. If any unknown fault occurs to the unit, please immediately disconnect the power, and contact local dealer. 5. Please don't detach or refitted the unit, otherwise some parts inside may be damaged or cause electric shock. replacing the damaged wires. 7. The unit is suitable for a.c 220V/110V working power, if it's used in other voltages, risk may occur 8.Please be attentive to the weather changes, and disconnect the power in case of lightning weather. 9. Don't touch the power plug with a wet hand, which may cause electric shock. 10. Please don't clean the unit with pesticides, alcohol, diluent and chemical liquids, which may result in surface peeling or decay. 11. Please don't restructure the unit. If there is any damage, no repair and warranty will be provided. To users: wearator nahe drainage system discha gui wain l auspillio, Plains instal a mercury If you want to get detailed information, please contact the manufacturer. Please record hyenient for inquiry lamber here