This clause of Part 1 is replaced by the following.
This part of IEC 60335 deals with the safety of electrically operated commercial hoods intended
for installation above commercial cooking appliances such as ranges, griddles, griddle grills
and deep fat fryers, their rated voltage being not more than 250 V for single phase hoods
connected between one phase and neutral, and 480 V for other hoods. Only single complete
units and hoods supplied as separate parts which when assembled form a complete working
hood, incorporating a fan, are within the scope of the standard including direct current (DC)
supplied appliances.
The hood may be used above one or more appliance or types of appliances.
The following extraction systems are within the scope of this standard:
– back-draft ventilation systems;
– down-draft ventilation systems;
– fume extraction modules.
These appliances are not intended for household and similar purposes. They are used in areas
not open to the public, for example in kitchens of restaurants, canteens, hospitals and in
commercial enterprises such as bakeries and butcheries.
As far as is practicable, this standard deals with the common hazards presented by these types
of appliances.
Attention is drawn to the fact that:
– for appliances intended to be used in vehicles or on board ships or aircraft, additional
requirements can 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.
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);
– appliances not incorporating a fan;
– appliances designed exclusively for industrial purposes;
– appliances intended to be used in locations where special conditions prevail, such as the
presence of a corrosive or explosive atmosphere (dust, vapour or gas).