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Fire exhaust fan application key point characteristics key reflection

Release Time：2021-07-20

The application of fire-fighting smoke exhaust fans has been applied in many engineering projects today. In order to enable customers to apply fire-fighting smoke exhaust fans more strongly, it is suggested that everyone should immediately do a good job in the inspection and maintenance of fire-fighting smoke exhaust fans.
1. During the trial operation of the fire-fighting smoke exhaust fan, it is necessary to carefully read the product introduction, check whether the wiring process and wiring method are in line, and also check too carefully whether the working voltage of the switching power supply of the centrifugal fan is closely combined with the regulations, whether the switching power supply is out of phase or in phase difference, whether the volume of the equipped electrical components is closely combined with the regulations, and the fire-fighting smoke exhaust fan.
2. When the fire exhaust fan reaches all normal speed ratios, it is necessary to accurately measure whether the input current of the centrifugal fan is normal. The current of the centrifugal fan box cannot exceed its rated voltage. If the current exceeds its rated voltage, check whether the working voltage shown is normal.
3. The fire exhaust fan allows the rated power of the motor to start or reduce the blood pressure of the electric type, but it should be too fine. The current flow when the rated power of the motor starts is about 5-7 times the rated voltage. The torque of the blood pressure reducing motor is positively related to the working voltage square meter. When the volume of the fire exhaust fan in the power network is not good, the blood pressure reducing start should be adopted.
4. During the trial operation of the single-speed centrifugal fan box, the low-speed gear shall be started first to check whether the rotation weight is accurate. When starting the high-speed centrifugal fan, it is necessary to wait until the centrifugal fan is interrupted before considering it to prevent the high-speed reverse rotation from causing switch trip and motor damage.
The fire-fighting smoke exhaust fan is suitable for ventilation or high-temperature smoke exhaust systems such as multi-storey buildings, underground works and tunnel construction, drying rooms, etc. It can continuously operate for more than 30 minutes at a high temperature standard of 280 ℃, and continuously operate for 20 hours/time at a material temperature of 100 ℃. It is an ideal fire-fighting equipment.
1. The cover of the fire exhaust fan is made of high quality high-carbon steel plate, and all parts have been sprayed on the surface after the production and processing.
2. The rims and leaves of the centrifugal impeller of the fire exhaust fan are made of aluminum alloy casting, which has the advantages of high efficiency and low noise.
3. The fire exhaust fan can adjust the operating point of the centrifugal fan according to the adjustment of the leaf installation angle when the centrifugal impeller is stationary, and can also adjust the characteristic category of the centrifugal fan according to the change of the total number of leaves.
Shandong Xingheng Environmental Technology Group Co., Ltd. is located in Luquantun Development Zone, Dezhou, Shandong, the hometown of FRP in China. The company has Grade II qualification for fire protection facilities engineering, Grade II qualification for construction mechanical and electrical installation engineering, Grade II qualification for environmental protection engineering, and safety production license. It is the first in the industry to pass ISO9001 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health management system certification, and an axial fan invention patent, A fan utility model patent, environmental assessment, safety assessment, three simultaneous and other procedures are complete.