EVS-EN 50223:2010

1.1  This European Standard specifies requirements for automatic electrostatic flock application equipment which is used for applying ignitable flock which may form explosive atmospheres in the flock application area. In this connection a distinction is made between flock application devices which due to their type of construction comply with requirements as laid down in EN 50050:2001 as applicable, and those for which higher discharge energies are stipulated. This European Standard also specifies the constructional requirements for a safe operation of the stationary equipment of flock application booth, including the electrical installations. This European Standard deals with all significant hazards, hazardous situations and events relevant to flock application booths, when they are used as intended and under conditions foreseen by the manufacturer (see Clause 4). 1.2 This European Standard considers four types of electrostatic flock systems. For more details, see Table 1. 1.3 This European Standard deals with those hazards occurring during stationary automatic electrostatic flocking, when the work is carried out under the conditions given by the manufacturer. Among these hazards are, above all, ignition hazards of the generated explosive atmosphere and the personal protection. 1.4  The stationary equipment dealt with in this European Standard is considered to be equipment of group II, Category 2D or Category 3D for the use in areas with potential explosion hazards of zone 21 or 22. 1.5 In case of hybrid mixtures, the stationary equipment dealt with in this European Standard is also considered as equipment of group II, Category 2G or Category 3G for the use in areas with potential explosion hazard of zone 1 or 2. 1.6  This European Standard is not applicable for -  flock systems operated with AC voltage, -  the application system for liquid or pasty substances (e.g. adhesives, primer), -  the cleaning of flock application booths, -  the storage and handling of ignitable substances outside of the coating plant. 1.7  For constructive measures for noise reduction of stationary electrostatic coating plants for ignitable flock, see EN ISO 11688-1. See also EN 14462 "Surface treatment equipment - Noise test code for surface treatment equipment including its ancillary handling equipment - Accuracy grades 2 and 3".