What is the reason for the vibration of the fan?
Fan inlet and outlet pipe design is unreasonable, causing resonance,
Fan and the motor, such as when the wheel connection, the wheel clearance is too small,
Impeller itself irrational structure, such as the number of even into the number of leaves,
The fan itself or the motor and bearing box, etc. feet bolts loose,
Fan of the impeller of the dynamic and static balance failed, with the fan after a certain period of time after the impeller uneven wear line caused by poor balance,
