www.jbj.co.uk/couplings.html#flender ATEX and ECMachinery Directive The operator has an obligation to ascertain whether an environment is potentially explosive. Details of this are laid down in Directive 1999/92/EC. Corrosion protection Ambient conditions Because of the environment, the coupling has to meet a large number of additional requirements. Couplings must be as suitable for use in a potentially explosive environment as for use at a high or low ambient temperature. The environment may be defined as chemically aggressive or be subject to laboratory conditions or requirements of foodmanufacture. This directive, harmonizes the individual states' legal requirements for explosion prevention and clearly defines the procedure for checking and circulating machines and parts. Whether or not a machine is used in a potentially explosive atmospheres, the manufacturer is required under EC Machinery Directive 2006/42/EC to assess and as far as possible prevent hazards whichmay arise fromhis product. Depending on the environmental conditions, suitable corrosion protection must be specified for the coupling. Unless otherwise specified in the order, steel and cast iron surfaces are shipped with a simple preservative. Wherever a potentially explosive environment cannot be ruled out, the machinery used must meet special conditions in order to prevent the outbreak of fire as far as possible. Within the European Union, Directive 94/9/EC applies to these applications. The drive train mostly comprises individual pieces of equipment which are put together to form a subassembly. If the individual pieces of equipment, such as motor, coupling, gear unit or driven machine conform to Directive 94/9/EC, the manufacturer of the overall unit can limit the risk assessment to the additional hazards which arise from the combination of different individual pieces of equipment. The hazards which can arise from the individual pieces of equipment are assessed by the relevant suppliers. The Directive 2014/34/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres will supersede the Directive 94/9/EC of 23 March 1994 with effect from20April 2016. The following applies to the products shown in this brochure with a suitable for intended use in potentially explosive atmospheres: » Products placed on themarket from20April 2016meet the requirements of Directive 2014/34/EC. Overload conditions may damage not only the coupling but also the entire drive train. » Products placed on themarket before 20April 2016meet the requirements of Directive 94/9/EC. The coupling series suitable for use in potentially explosive environments aremarked with EX in the catalogue. Overload conditions are operating conditions that go beyond the limit loads of the coupling. Overload conditions may occur under abnormal operating conditions, e.g. drive blockage, short circuit or supply deviations, as well as under normal operating conditions, e.g. during starting or breaking. Particularly in the case of high mass moments of inertia of the driven machine, torques that are a multiple of the motor starting torque may become effective during direct starting or star-delta starting. Overload conditions FLENDER couplings are to be rated as components according to the new ECMachinery Directive 2006/42/EC. Therefore, Flender do not issue a declaration of incorporation for this products. The manufacturer is responsible for ensuring that the product is safe as defined in the EC Machinery Directive and conforms to Directive 94/9/EC if the EX requirement is specified by the operator. Overload conditions can frequently be prevent with special design measures. SIRIUS soft starters or SINAMICS frequency converters are suitable for considerably reducing starting torques of asynchronous motors. If drive blockages and overloads of the driven machine cannot be ruled out, torque limiting SECUREX couplings can prevent damage to the drive train. 18 #DriveLineHarmony Environmental Conditions & ATEX Mechanical Power Transmission Couplings
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