Model No. 428D 428F 428G Motor (kW)Phase Maximum Running Current (A) Weight (kg) Noise Level dB(A) * 1.533.532 78 1.533.532 82 2.234.736 82 > * Noise levels have been measured at a distance of 1m from the blower, which was fitted with an inlet silencer and a ducted outlet. In some modes of use , these fans may generate high noise levels. It will be necessary to carry out a noise survey after installation.Current readings are based upon voltages of 400V 3 Phase and 230V 1 Phase. Thick line on performance curve shows limits of continuous rating. 100200400300600500 102030 4050 1200 428/F 428/G 428/D TOTALPRESSURE(in.w.g.) TOTALPRESSURE(mmw.g.) 200400 6008001000 0200100300400 VOLUME (cu.ft/min) VOLUME (cu.m/hr) PERFORMANCE CURVE Secomak Ltd. 330 Centennial Park, Elstree, Hertfordshire, WD6 3TJ, UKPhone: +44 (0) 208 7321 300 Fax: +44 (0) 208 7321 301 E-mail: [email protected]: www.secomak.com >