Surge Characteristics and Safe Maintenance of cross flow blowers

　　(1) Under the same suitable working conditions, the higher the rotational speed of the cross flow blower, the easier it is to generate surge, and the longer the surge period is. When surge occurs, the indication at high speed is stable but its value is small, at this time, the inside of the fan is heavy and the noise is dull;

　　(2) Under the same rotating speed and different working conditions of the cross flow blower, the smaller the resistance, that is, the larger the area of ​​the vent, the more likely the surge phenomenon occurs;

　　(3) Under the same suitable working conditions of the cross flow blower, when the surge occurs at high speed, its true value deviates greatly from the ideal normal value, but it is not much different from the stable value at low speed.

　　cross flow blower installation and maintenance requirements

　　1. The ambient temperature should be 75ºC≥-40ºC.

　　2. The industrial gas of the cross flow blower passing through the cooling fan is not allowed to contain strong acid, strong alkali and various solutions.

　　3. Dust and other sundries are not allowed to fall into the fan, so as not to cause the fan to burn and the fan blades to break.

　　4. Before installing the cross flow blower, you should first check whether it is damaged or deformed due to packaging and transportation. If there is damage or deformation, it should be repaired and installed.

　　5. Then check whether the parts and screws of the cross flow blower are loose; whether the blades and the fan duct collide or shift, if they collide or shift, they should be adjusted before installation.