For the negative pressure fan, what are the reasons for its operating noise? How to take necessary and effective measures for different reasons? During the operation of the negative pressure fan, how to avoid this problem? Today we will give a specific answer to let everyone Understand and master, apply it to practice. Ningbo air cooler, Ningbo air cooler

　　 1. If the negative pressure fan is installed, its contact with the window frame is too tight, causing the window frame to resonate during operation, then it should be properly adjusted its tightness, or stuffing. For the bottom of the negative pressure fan, check whether it is stable, if it is not stable, then it must be dealt with. In addition, the spring of the anchor bolt cannot be crushed to avoid problems.

　　 2. On the base of the negative pressure fan, the tightness of the vibration damping pad or fixing screw is too high, so that it loses the vibration damping effect, resulting in vibration. At this time, the vibration damping pad or fixing of the negative pressure fan base should be dealt with. The tightness of the screw is adjusted to make it suitable to restore the vibration reduction effect.

How to solve the operation noise of negative pressure fan?

　　 3. The equipment power supply voltage is too low, which makes the fan appear abnormal noise or vibration. The solution is to control the power supply voltage within the rated range and install a voltage regulator to stabilize the voltage. In addition, if there is collision or friction between the fan blades and the casing, it will also cause this problem. Therefore, the distance between the blades and the casing should be adjusted and controlled to avoid problems.

　　 4. In the negative pressure fan, if the impeller assembly is not good, or the speed is too fast, it will also cause operating noise. Therefore, to deal with it, the specific method is to reassemble the fan according to the technical requirements and adjust the speed of the impeller to make it within the appropriate range.