"220V AC Cooling Fan" should be read before using manual, electric fans to fully grasp the structure, performance and installation, use and maintenance methods and precautions. Desktop, floor fans must have safety ground wire three-pin plug and socket; the ceiling fan should be installed at a higher position, you can not install a ground wire. The fan blades are an important part, whether in installation, removal, scrub or use, we must strengthen the protection to prevent deformation. Operation of the function switch, button, knob, action can not be too much, too fast, can not press two buttons simultaneously.