SD-Advantages: Top panel and inlet panel can be changed, to allow 90deg or 180deg air flow. Twin-walled casing made of galvanized sheet steel. With insulation, low noise level, easy installation, can connection to DIN-standard tubes, forward curved impeller for higher pressure, screw topped for simple access to blower.
made of reinforced with glass fibre Polyamide Panels made of galvanized sheet steel with inner sound absorbing mat of concealed mineral wool. The silent tube fans sizes 125-315M have multiple step motors. Therefore the speed can be changed by using a switch. Attention!.These motor must be mounted with horizontal shaft position!. The silent tube fans 315L - 400 are driven by a speed controllable external rotor motor, protection class IP 44 according to DIN 40050, insulation class B. Motor protection by thermical contact inserted into the winding. The forward curved impellers are made of galvanized sheet steel with the exection of silent tube fans 125 and 160M which are according to IEC 695 T2-2 and EN 60335-2-31 made of polypropylen. Impeller and motor are ballanced in an unit dynamically in two plains according to VDI 2060, quality class Q 2,5. Maintenance free ball bearing. Euro-voltage according to DIN IEC 38 230/400 V, 50 Hertz. The motors are wired to an external terminal box.The performance curves for these fan types have been established in mounting position B (installed on the pressure side and open on the suction side) and show the static pressure increase Dpst as a function of the volume flow. The dynamic pressure pd2 refers to the flange crosssection at the outlet side of the fan. The ascertaining of the sound level follows the enveloping surface method according to DIN 45635 section 38. The figures in the air performance curves are the “A” decibel figures which are the sound power levels LWA6, at the outlet side unducted. Please refer or download our catalogue for more information.