ATEX roof fan RDM 31-5663-4X-21

with swirl free vertically directed discharge for gas medium up to app. +40 °C. Stylish sealed casing manufactured from aluminium, Base frame of galvanised sheet steel for fitting to upstand, projecting well beyond the upstand in order to increase weatherproofing. Flange connection at intake acc. to DIN 24155-2 Discharge outlets are protected from the weather on fan shutdown by automatic backdraught shutters. Casing parts, and the impeller plus motor, are easily removed for inspection and maintenance. High performance centrifugal impeller with backward curved blades, mounted on the shaft of a standard motor placed out of the airstream, protected IP 55. The motor is adequately air cooled via a separate ventilation system. Explosion proof execution according to ATEX regulations 2014/34/EU, DIN EN 14986:2017, DIN EN ISO 80079-36 /-37:2017. Equipment labeling: II 3G Ex h IIB T3 Gc. Without service switch. Performance data in according DIN 24166  tolerance class 2 (BS 848 Class "B").