Exhaust Fans VL 50 Exhaust Fan VL 50 (V-line) VL50 is the ideal exhaust fan offering a cost effective solution to high airflow demand and high quality material. The propeller has a simple design including self-cleaning functions and high efficiency characteristics, all of which are features of the new V-line product segment. The square fan housing and air conveyor (venturi) are made of a strong galvanised sheet-steel. The 6-blade propeller is statically and dynamically balanced. The propeller is available in stainless steel and galvanised steel. To improve aerodynamic efficiency, the fan has been developed in Munters Euroemme’s R&D lab. The test chamber has been built according to ANSI / AMCA 210-85 Figure 15 specifications. Construction details and air tightness have been verified by personnel of the BESS Lab at the Agricultural Engineering Department, University of Illinois – USA. Propeller and Shutter Attached to the propeller is a large v-belt pulley in which is embedded a ball bearing, fully protected against water. The belt transmission ensures low propeller rpm, which in its turn entails high efficiency and low energy consumption as well as low noise. The shutter is made of pressed galvanised steel for all models, which is stronger than aluminium and plastic. The fan shutter is tightly closed when the fan is not in peration, preventing any air leakage through the fan. The patented centrifugal system hinders the shutter from being closed by air pressure, keeping the efficiency of the fan at peak performance at all times by maintaining the shutter fully and firmly opened. Opening of the shutter is made by rotating weights placed over the centrifugal system arms. Closing of the shutters is provided for by powerful springs, when the fan is not operating. The shutter does not have to be cleaned regularly as dust does not affect its opening and closing movement. All the plastic parts are made of gray acetalic plastic. Equipment All high quality strong material without exception Each motor individually tested for 100% quality control Central hub and v-belt pulley are made from die-cast aluminium Welded wire guards ensure good protection Propeller is statically and dynamically balanced Shutter bearings are maintenance free Shutter blades are equipped with plastic caps for complete air tightness Patented centrifugal system permits full and firm opening of the shutter Shutter blades insensitive to dust deposits Powerful springs keep the shutters firmly closed when fan is not operating Every fan is individually checked for quality Energy efficient Cost-effective solution Curves refered to VL 50 3Ph 50Hz motor. Order Information VL50-X-X-X e.g., VL50-b-2-wp-wm b : Code for electric motor according to above table. 2 : Code for the type of propeller blades. Galvanised propeller blades. Stainless steel propeller blades. wp-wm : Options codes wp: Fan equipped with plastic CE protection for belt and pulleys (on mesh side, standard in Europe) np: Fan delivered without plastic CE protection for belt and pulleys ( on mesh side, standard outside Europe) wm: Fan delivered with pyramidal shape mesh for CE protection on shutter side. nm: Fan delivered without pyramidal shape mesh for CE protection on shutter side (standard) Motor Specifications VL 50 Code Nominal power Type phases Speed Frequency [hz] Voltage [V] Current [A] rpm [w] [hp] a 735 1.0 1 single 50 230 5 1,380 b 735 1.0 1 single 60 220 – 240 5.7 1,700 c 735 1.0 3 single 50 220 – 240 3.5 / 2 1,400 d 735 1.0 3 single 60 230 / 400 3.5 / 2 1,700 e 1,100 1.5 1 single 50 230 7.3 1,400 f 1,100 1.5 1 single 60 230 / 400 7.3 1,700 g 1,100 1.5 3 single 50 230 / 400 5.2 / 3 1,400 h 1,100 1.5 3 single 60 220 – 240 5.2 / 3 1,700 Technical Specifications 05 hp 0.75 hp Weight of fully equiped fan1 [kg] 83 83 Nominal propeller speed [rmp] 386 453 Airflow at 0 Pa1 [m3/h] [cfm] 34,370 [24,235] 40,030 [23,564] Specific performance at 0 Pa1 [m3/wh] [cfm/w] 37.2 [21.9] 28.2 [16.6] Propeller diameter [mm] [inch] 1,270  Number of blades 6 Number of shutter blades 10 Max. operating temperature [°C] [°F] 50  IEC protective class of electric motor IP55 Electric motor winding insulation grade F 1 All values refer to 3 phases 50 Hz motor. N.B Airflow data are measured at standard condition (20 °C, 1013 hPa). VL 50 is developed and produced by Munters euroemme S.p.A., Italy.