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2.1.1 Intended purpose of equipment
Please keep in mind what the actual application of equipment is. For example in case the
equipment is to be moved when connected to the supply it needs to be designed for that
purpose. If the certification is mentioning “portable” it means that the equipment is suitable
and tested for portable use. If the certification does not mention portable it means that the
equipment shall not be moved when it is in operation (reliable fixing of equipment).
Slam®-units are designed and tested for portable use
2.1.2 Application of use (Zone XX) in accordance with
equipment category
Operator has the best knowledge of area classification at his site. To help
the operators’
selection of equipment the certification is describing the equipment category. For explosion
hazardous areas there are three equipment categories.
Category 1 product is suitable for use in Zones 0, 1 and 2 / (20, 21 and 22)
Category 2 product is suitable for use in Zones 1 and 2 / (21 and 22)
Category 3 product is suitable for use in Zones 2 / (22)
Slam®-units mentioned in this instruction fall into Category 2 equipment
2.1.3 Explosion group (IIA, IIB or IIC) in accordance with
Equipment group (IIA, IIB or IIC)
This information is vital because the substances require different amount of energy to be
ignited. Safety requirements for equipment are not the same for different substances (e.g.
static electricity requirements).Therefore making the selection easier the gases are divided to
three different groups (IIA, IIB and IIC). Further information about the substances can be
found from EN/IEC 60079-20-1 (Data for flammable gases and vapours, relating to the use of
electrical apparatus).
Slam®-units mentioned in this instruction are Equipment group IIC
