What are the two preconditions fire exhaust fan is running? Are fire exhaust fan normal operation, there are two prerequisites, fire exhaust fan, we only do these corresponding work, in order to ensure its smooth operation, high-temperature exhaust fan, so everyone running to the fire exhaust fan two preconditions understand how much we explain in detail below: Knowledge First, when fire exhaust fan up to speed, the fan should be measured input current is normal, the fan operating current can not exceed the rated current. If the operating current exceeds the rated current, should check the supply voltage is normal. Knowledge II, the required fan motor power refers to certain conditions, for centrifugal fan and wind chassis, the required high power inlet fully open. If the inlet operated fully open, there is risk of damage the motor. When the test is best to fan the fan inlet or outlet piping of the valve is closed, the operation will gradually open the valve, until the desired operating conditions, the exhaust fan installed, and note that the fan operating current exceeds the rated current. Two preconditions exhaust fan fire normal operation mainly these, we must be in the application process in accordance with the above instructions for proper operation so its performance is fully displayed, as well as what problems we in the process of operation, please feel free to contact us and we will make you a detailed analysis. Manufacturers explain that affect multiple industries fire exhaust fan normal start of the factors fire exhaust fan, as a new ideal fire necessary facilities, widely used in construction. Fire exhaust fan in everyday use need to pay attention to daily maintenance and maintenance, in the face of the situation, if the fire can not start properly exhaust fan, exhaust fan, will bring very serious consequences, summed up the four manufacturers compromising fire Factors exhaust fan start up: 1. Power failure, plug connection is bad, the lack of current 2. wiring faults, such as loose, short, other wiring errors. Limiting device (such as air switch) 3. line does not match, can not meet the start-up current. The motor was damaged, leading to not start. These are the reasons summarized in factory fire exhaust fan does not start. When we encounter such a failure from the four aspects of the investigation, which can guarantee fire exhaust fan can start properly. Sheng clean air conditioning (Figure) _ _ factory exhaust fan exhaust fan is provided by the Texas Air Conditioning Equipment Co., Ltd. Sheng-purification. Texas Air Conditioning Equipment Co., Ltd. Sheng-purification (www.dzhffj.com) located in Dezhou City, Shandong Province, Wuhan City acres of industrial park. Scraps and development in the wave of market economy, the current clean air conditioning Sheng Tong has a high profile in fan, ventilation equipment, and enjoys a good reputation. Sheng purification of air conditioning made the whole network business alliance certification, marking our service and management level has reached a new height. Sheng clean air-conditioning staff willing to work with all people of insight and common development, for a better future.