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　　Here is an introduction to the installation rules of the negative pressure fan:

　　After the installation of the negative pressure fan is completed, check whether there are tools and sundries inside the fan; check whether the fan blades are too tight or scratched, and the omissions can be ruled out before trial operation. Before installation, check whether the fan is intact or not. If any parts are loose or fall off, please do not install it.

　　When the negative pressure fan is running, if the fan vibrates or the motor has an abnormal sound of "humming" or other abnormal phenomena, it should be shut down immediately for inspection or consulted, and the abnormality should be eliminated before starting to use. Pay attention to maintaining the horizontal position of the negative pressure fan and avoid tilting.

　　The adjusting bolt of the negative pressure fan should be in a convenient position to adjust the belt tightness in the future. If equipped with a frequency converter, the switch of the fan should be operated normally according to the requirements of the frequency converter to avoid affecting the life of the fan.

　　The above is about the installation rules of the negative pressure fan. I hope you can understand it. For more information, please log in: m.woqutao.com.cn