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1·The typical troubles of forced draught fan and its driving motor are mainly introduced.

重点介绍了送风机和其驱动电机的典型故障及其特征。

2·Diagnosing method of forced draught fan trouble is described and application examples are given.

对送风机故障诊断方法作了说明，并给出了应用实例。

3·The advantages of frequency speed control in forced draught fan for boiler in power plant are set forth by examples.

结合实例阐明了电站锅炉送风机采用变频调速的优点。