Rosenberg high efficiency axial fans in low pressure execution
Casing made from galvanized and plastic-coated steel, EQ/DQ series
plate mounted, ER/DR series short cased with two flanges.
Impellers with aerodynamically shaped blades, up to size 300 made
from galvanized steel, from size 315 up to size 630-6 made from
plastic, from size 630-4 from die-cast aluminium, mounted onto a
speed controllable external rotor motor. The fan is balanced on two
levels according to quality level G 2.5 DIN/ISO 1940.
Closed motor, protection class IP 44/54 with protection against humidity
and thermal contacts wired in windings for motor protection from size
315.
Maintenance free ball bearings closed on both sides, sealed for life.
Electrical connection through terminal box (not connected) in IP 44.
Documentation:
Declaration of incorporation and operating instruction are according to
Machinery Directive 2006/42/EC, CE identification in accordance to
EMC-directive 2004/108/EC and Low Voltage Directive 2006/95/EC.
Motor operating instruction is available from motor manufacturer
