scope:

This standard may be used as the basis for testing air circulating fan heads, ceiling fans (less than 1.8 m (6 ft) in diameter), box fans, table fans, portable personnel coolers, or other air circulating devices when air is used as the test gas.

Blowers, exhausters, compressors, positive displacement machines, and positive pressure ventilators are not within the scope of this standard.

The parties to a test for guarantee purposes may agree on exceptions to this standard in writing prior to the test. However, only tests which do not violate any mandatory requirements of this standard shall be designated as tests conducted in accordance with this standard.

Purpose

The purpose of this standard is to establish uniform methods for laboratory testing of air circulating fans to determine performance in terms of thrust for rating, certification or guarantee purposes.