When this distance is very small lift pulsating, bit stream and trail changes will have an impact, the blades may also be used as sound barriers, and strengthen the adjacent blade rows of blades to generate acoustic radiation. This effect depends on the lift pulsation-related acoustic wavelength as compared with the size of the blade barrier. Within this ratio is more than 2 frequency range, due to the impact caused by changes in the intensity of radiation is the most significant. Therefore, axial flow fan 380, when the upstream and downstream of the radiation noise of the blade has the same number of leaves, and the leaves of the two columns of each of the blades on both sides of the source and at the same time constituting a sound barrier with a rotor blade meet, this effect will be stronger. Editing a maintenance, use of the environment should be kept clean, fans keep the surface clean, the outlet should not have debris regularly to remove dust and other debris inside the fan and piping. 2, can only operate at the fan completely normal circumstances, while ensuring an adequate supply facility capacity, voltage stability axial fan is installed, run strictly prohibited defect, supply lines must be dedicated line, not long-term temporary supply line. Axial Fan Installation | axial fans | Rich ventilation equipment provided by Dezhou Plumper ventilation plant. Dezhou Plumper ventilation plant (www.frtfsb.com) (www.frtfsb.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Plumper ventilation equipment into the brilliant and you work for a better future!