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 appearance test: clean appearance, 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 model, the noise value less than international and business requirements; four, vibration testing: running, detected by vibration machine vibration velocity, and shall not exceed the international standard rate; five, speed test: tester for negligent Young speeding overspeed test, exceeding the rated speed 20% of the cases, running longer than 10 minutes; six, the whole operation of the current detection: Under normal load during operation of the motor current is detected by the current exceeds the standard requirements, you need to change the motor configuration DWT series roof fan Features a specification form, a wide range of applications: according to different occasions and require the use of wind, pressure and noise, use the following three types of fans: A, Axial roof fan: Model for the DWT-I type fan, applicable in the low-pressure, high-volume usage scenarios. According to user needs can also be designed to deliver two-way reversible exhaust, which has both positive and negative characteristics of the fan equivalent conditions, DWT-Ⅴ type such as; B, centrifugal roof fan: Model for the DWT-Ⅱ type, DWT-Ⅲ type two kinds of patterns, suitable for smaller air volume and pressure requirements of the occasion; C, no motor turbine exhaust fan: Model for the DWT-Ⅳ type, is an indoor and outdoor air pressure driven by special curved blade with the axis of rotation thereby discharging the ideal energy-saving ventilation of indoor air. 2, high efficiency axial fan selection, low noise: The fan uses advanced CAD software, designed by the multi-objective optimization. DWT-Ⅰ series machines No. 12 # -24 # A total of eight machines No. fans, by changing the speed, angle and leaf-type methods, the expansion of the range of performance parameters to meet the needs of different conditions of use, to the fan with the system area with to facilitate the realization of energy saving and noise reduction; 3, smooth operation and long life: the moment of inertia of the fan inside the small turbine prices, moving steadily high precision, smooth operation and performance indicators of business requirements of modern standards are higher than fan industry standards to ensure that the fan at the leading position in the peer; 4, for a wide range: The fans can be used according to requirements made into explosion proof, for flammable, explosive and corrosive gases with forced ventilation occasions; 5, the products on many occasions by the provinces and Technical Supervision qualified, users can be assured. High pressure blower | Fans | Air conditioning equipment provided by Hao Yang Hao Yang Air Conditioning Equipment Co., Texas. 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!