Trouble-shooting of fans is often taken for granted. Indeed, it is frequently limited to making the fan work, when it should be making the fan do what it is specified to do.

If the resistance of the system is more or less than specified, or if other properties are not as specified, rectification of the sys­tem must be carried out first. If the necessary changes to the system cannot be carried out then this should be acknowl­edged. The fan may require “up-grading", a condition which is not a fault of the fan but rather the fault of the system.

Readers are referred to AMCA202, which gives symptoms and solutions in a logical progression. Table 18.6 is a shortened re­sume of the information contained therein.

Posted in Fans Ventilation A Practical Guide

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