scope:

This document deals with the safety of electrically operated commercial hoods intended to collect and conduct contaminated air, and not intended for household use, their rated voltage being not more than 250 V for single phase, and 480 V for others hoods.

The following extraction systems are covered as well:

- back draft ventilation;

- downdraft ventilation;

- air conducting systems.

NOTE 101 Hoods may be used together with one or more commercial catering appliances of the same or different types. Commercial catering appliances are used, for example in restaurants, canteens, hospitals and commercial enterprises such as bakeries, butcheries, etc.

The hood may be used above one or more appliance of the same or different types.

So far as is practicable, this standard deals with the common hazards presented by these types of appliances.

NOTE 102 Attention is drawn to the fact that:

- for hoods intended to be used in vehicles or on board ships or aircraft, additional requirements may be necessary;

- in many countries additional requirements including ventilation requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities;

- for hoods incorporating a filter system with means for ionizing the air, IEC 60335-2-65 also applies.

NOTE 103 This standard does not apply to:

- domestic range hoods (IEC 60335-2-31);

- purpose-built hoods, although this standard can be used as a guide (a purpose-built hood is either constructed on-site or specially constructed in the factory and is not mass produced);

- hoods not incorporating a fan;

- hoods designed exclusively for industrial purposes;

- hoods intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).

- hoods designed for use in vehicles or on board of ships or aircraft,

- hoods with special treatment of cooking fumes, e.g. UV-C treatment, plasma-treatment, catalyser, etc.,

- ventilation and air conditioning systems,

- exhaust air systems.

NOTE 104 Requirements for hoods with externally mounted fans are under consideration.

This document deals with the reasonably foreseeable hazards presented by appliances that are encountered by all persons in and around the installation place. However, in general, it does not take into account:

- children playing with the appliance;

- the use of the appliance by children;

It is recognized that very vulnerable people may have needs beyond the level addressed in this standard.