How to determine whether the normal operation of centrifugal fans

Centrifugal fans are running, sometimes there are some problems. These problems are usually due to manufacturing processing, selection, installation and operation and management due to improper. But some problems are not easy to see. So how to determine whether the centrifugal fan in normal operation?

1. bearing feel is more moderate, no Ma hand, not hot;

2. Impeller operation with or without vibration or a wide range of shaking;

3. whether the impeller operation abnormal sound;

4. Transmission Triangle tape with no obvious beating;

5. When the impeller running ammeter pointer swing amplitude or not abnormal phenomenon.

According to the above phenomenon can determine whether the centrifugal fan problems. And then in a more specific case to make a specific analysis and treatment.