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1.0 GENERAL(1.0一般).pdf

发布:2017-07-27约4.42万字共7页下载文档
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FAN TROUBLE SHOOTING 1.0 GENERAL Problem Possible Cause Recommended Action 1.1 Motor Noise Firstly determine if the noise is electrical If the noise doesnt stop instantly, but or mechanical. runs down with the motor, the problem is more likely to be mechanical, generally the bearings; see Mechanical section below: If the motor is switched off and the noise stops instantly the problem is more likely to be electrical; see Electrical section pages P-4/7 . 2.0 MECHANICAL Problem Possible Cause Recommended Action 2.1 General Fan Noise The fan could be running in stall. Check the actual fan performance against the fan curve to determine where
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