Centrifugal fan DD 146/220 M048 1F 4P

Double width, double inlet (DWDI), direct drive, forward curved blades fan. Spot-welded scroll of galvanised steel plate. Straight cut off plate at fan discharge. Impeller with forward curved blades of galvanised steel plate, directly mounted on a conventional "Internal Rotor" motor for no transmission losses. Closed (IP 32) frame, single-phase, multi speed motor, usable at 230 V, 50 Hz or 60 Hz. With built-in thermal protection device. Maintenance free, integral vibration isolators, self aligning sleeve bearings. Dynamically balanced according to DIN ISO 21940-11. With mounted discharge flange. Air performance ratings according to AMCA 210-99 (Fig. 12), UNI 10531 (Fig 30c and par. 29.2 f) and ISO 5801 (Fig. 69 c and par. 30.2 f).