1. The use environment should always be kept clean, the surface of the fan should be kept clean, there should be no sundries in the inlet and outlet, and dust and other sundries in the fan and pipeline should be cleaned regularly.
Fans have a long history. Simple wooden hullers for rice hullers were built in China many years before THE B.C., working on the same principle as modern centrifugal fans.
I. Maintenance of centrifugal fan
