Exhaust fan technology constantly improved, and its application more win user acceptance. Of course, after the election of our high-quality exhaust fan, we still need to pay special attention to some small knowledge application installation in the specific application, let's take a look about the exhaust fan in the application of knowledge, especially in product storage pre-test questions. As follows: First, the visual inspection: the appearance of clean high pressure centrifugal fan, paint intact; two, running test: Under normal load, running longer than 30 minutes, without exception; three, noise detection: the fan noise according to international verification fan, noise value is less than the international and business requirements; four, vibration detection: Runtime exhaust fan fire, detected by the vibration machine vibration velocity, and shall not exceed the international standard rate; five, speed test: tester for negligent Young speeding overspeed test, in the case of more than 20% of rated speed high pressure air, running longer than 10 minutes; six, the whole operating current detection: Under normal load during operation of the motor current is detected by the current exceeds the standard requirements, the need to change the motor configuration is detected mainly wind, air pressure, input power, speed, range, energy efficiency and so on. Fan noise detection and fan vibration detection is mainly based on GB / T 2888-2008 "fan and blower noise measurement method", JB / T 8690-1998 "industrial fan noise limits", JB / T 8689-1998 "fan vibration detection and restrictions ", GB 9068-1988" Determination of heating, ventilation and air conditioning equipment noise sound power - Engineering method ", GB / T 3767-1996" Determination of sound power levels of noise sources reflecting plane freedom sound pressure field engineering method. " Axial fans _ _ Hao Yang Fan conditioning equipment provided by the Texas Air Conditioning Equipment Co., Ltd. Hao Yang. Air Conditioning Equipment Co., Texas Hao Yang (www.dzhykt.com) strong, credible, in Dezhou chemical fiber fabrics, materials, and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hao Yang air conditioning and you hand into the brilliant, for a better future!