Natural gas blower 94/9/EC

biogasside-channelsingle-stage

Generalities and construction features in conformity with the 94/9/EC Directive (ATEX) The MAPRO® side channel blowers to be used for extraction or compression of combustible gases, such as biological or natural gas, have been designed in order to fall within the Equipment-Group II as defined by the 94/9/EC Directive (ATEX), Category 2 both for the surrounding area conditions and for the internals of the machines. They are therefore gas-tight blowers, with the following construction features: casing and impellers made completely of spark proof aluminium alloy; casing impregnated with Loctite; casing halves sealed; shaft sealing by special double-lip seals which do not require lubrication; two-pole, type of protection d, flameproof electric motors, with specific marking Ex II 2 G, additional marking Ex-d IIB T3. The simplest solution for the manufacturing of the machines is the so-called CLOSE COUPLED version i.e., a flange mounted electric motor is bolted to the blower casing; the impeller, which is dynamically balanced, is fitted directly onto the motor shaft extension.