Revised Standard from Last Update.

1. Scope

1.1 This standard covers the air capacity, constructional features, performance requirements and methods of testing for evaporative air coolers suitable for rated voltage up to and including 250 V, 50 Hz. ac.

1.2 These coolers are not suitable if difference between dry bulb temperature (DBT) and wet bulb temperature (WBT) is less than 3°C and humidity is over 75 percent.

2. References

The standards listed below contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below:

277 : 2018 Galvanized steel strips and sheets (plain and corrugated) — Specification ( seventh revision )

302 (Part 1): 2008 Safety of household and similar electrical appliances: Part 1 General requirements ( sixth revision )

694 : 2010 Polyvinyl chloride insulated unsheathed and sheathed cables/ cords with rigid and flexible conductor for rated voltages up to and including 450/750 V ( fourth revision )

996 : 2009 Single-phase a.c. induction motors for general purpose ( third revision )

1391 (Part 2): 2018 Room air conditioners — Specification: Part 2 Split air conditioners ( third revision )

2312 : 1967 Propeller type ac ventilating fans ( first revision )

3854 : 1997 Switches for domestic and similar purposes — Specification ( second revision )

9968 (Part 1): 1988 Elastomer insulated cables: Part 1 For working voltages up to and including 1 100 V ( first revision ) 11951: 2009 Pumpset for desert coolers