1. In the process of impeller rotation, the casing is easy to vibrate. The bolts used to fix the motor are loose for a long time, which causes motor vibration and fan sensation.
2. Because the two fans are in disrepair all year round, the connection between impeller hub and blade is loose, and the impeller balance is damaged. After long-term operation, the original balance method of impeller is damaged or the blade is corroded by dust or foreign matters, resulting in impeller imbalance.
3. If the viewpoint of blade device of axial fan is too large, the current and power of motor will be overspended, and the motor will be damaged due to overload.https://www.ck-stone.com/