Exhaust fan choice points: exhaust fans choose the main control parameters for temperature, air flow, total pressure, efficiency, noise, electrical power, speed and shaft power. Exhaust fan at medium temperature not higher than 85 ℃ conditions should be long-term normal operation. Exhaust fan shall ensure that: When the transmission medium temperature at 280 ℃ during continuous work 30min Asia exhaust fan, and at medium temperature cooled to ambient temperature still continuous running. Exhaust fan test methods: cutting impeller balance correction 7BIT 9101 according to the provisions in the balancing machine. Impeller speed test conducted according to the provisions 7BIT 6445. Mechanical operation test fire exhaust fan in the work book Jen confusion exhaust fan speed continuous operation, the bearing temperature stable after 20min, bearing m liters and vibration measurement. no more than a liter of the 4nC, vibration and seized 99 m values ??should be consistent with the relevant provisions of 7Bfr 96V. Exhaust fan manufacturers | Good Quality Dual Carrier Air Conditioning (certified) | Hakusan City exhaust fan is provided by the Texas two-Carrier Air Conditioning Equipment Co., Ltd. Carrier Air Conditioning Equipment Co., Texas two (www.slktsb.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Two-profit leader in air conditioning with the staff warmly welcome all inquiries negotiations to create a better conditioned double benefit in the future.