SWF (A) [FLF] series of low-noise mixed flow fan 
 Overview: 
 SWF (A) [FLF] series of low-noise mixed flow fan for ventilation and air conditioning systems, often the fan pressure due to the high flow deficiencies or traffic large enough pressure this system and the fan does not match the case, we based on the theory of quasi-ternary "and" Meridian accelerate the design method successfully developed more than the number of revolutions between centrifugal and axial flow, the pressure coefficient is higher than the axial flow fan and flow system is higher than a new type of centrifugal fan. Therefore, the user selection of the range is broader and more reasonable system to match, the system energy. It is a new product to the fan in the most appropriate pipe pressurized system. 
 Purposes: 
 Widely used in ventilation and air conditioning systems for industrial and civil construction. Particularly suitable for pressurized air supply in the pipeline. The SWF (A) [HLF] - Ⅰ type can replace the high-pressure axial flow fans SWF (A) [HLF] - II-type two-speed machine, SWF (A) [HLF] - III type of alternative high-pressure centrifugal fan . 
 Structure and characteristics: 
 The basic structure of the type of air inlet and outlet on the same axis (ie axial structure), round shell cones, ranging from the width of the shape of leaves along the flow direction was. The Cylindrical have three types of straight type, drum and imports plus arc-shaped muffler. 
 According to the principle of airflow meridional acceleration, the fan has the dual characteristics of centrifugal and axial, ie, both high pressure and large flow, and has the advantages of high efficiency, low noise and wide high efficiency zone. 
 Compact, light weight, easy installation, small footprint. 
 Installation and use: 
 Horizontal, vertical and ceiling can be installed. 
 Ventilation, air and pipeline pressure can be used. 
 Fan use, maintenance, 
 Maintenance. 
 A pre-installation should carefully check the blades and chassis whether the gap due to shipping damage or deformation, otherwise should be repaired can be installed;, check whether the connection screws loose and touch the leaves and duct shell, such as leaves hairdryer uneven, should be adjusted before installation; C before starting the fan, we must first check the fan and piping and whether impede the rotation of items;, check the motor insulation performance is good, power check if there is friction collision abnormal vibration; E, in normal operation, such as the following cases should be shut down immediately to check: 1, motor temperature rise over 70 degrees Celsius; motor chang white smoke; strong vibration or large magnetic blocks of sound. 
 Common, fan failure fan vibration causes can be checked from the following: 
 A, impeller and duct friction, and an abnormal sound and vibration; B, bracket foot did not tighten the bolts will appear larger vibration; C, the impeller due to the compressive deformation in the transport or bolts loose vibration ;, leaves with the sleeve connection of screw loosening or spindle bending deformation E, bracket and electrical connection screws loose lead to blade imbalance, bearing damage caused by the intense vibration. 
 3, and fever. In the room temperature operation for some time, the motor temperature is too high, you may have the following causes: 
 A motor bearing damage, with the gap is small, does not meet the requirements; B, shaft and bearing installation skew, two bearing misalignment; C, the resistance is too large, the motor running overload; the supply voltage is too low, or three-phase motor run-off phase.