"Cross Flow Fan" Do not touch the blades and pressing the power cord wrapped around with a fan or pull the power cord, the power cord and move the axis will be destroyed; avoid dust, water, insects enter and affect the life and defective products; when the fan is in operation, do not attempt to lock the fan particularly long period of time, this will not stop because of continuous turn, produce high fever burned fan; torque lock screw shell shall not exceed 4Kgf; please do not use screwdriver, iron bars and other objects stall fan, this will damage the fan; please note that the fan at high speed will hurt your fingers.