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How to select the fire exhaust fan and master the starting mode

Release Time：2021-07-20

Most people don't know how to choose products, so they often buy things that are not suitable for them. If they don't use them for a long time, they will become rubbish. If the money is spent, it doesn't work. Isn't it a waste.
1. The main control parameters of the fire exhaust fan are working temperature, air volume, full pressure, efficiency, noise, motor power, speed and shaft power.
2. The air volume of the fire exhaust fan should be increased by not less than 10% to 20% of the fire exhaust fan according to the required air volume value.
3. It can operate normally for a long time under the condition that the medium temperature is not higher than 85 ℃.
4. The fire exhaust fan should ensure that it can work continuously for 30min when the temperature of the conveying medium is 280 ℃, and it can still operate continuously when the temperature of the medium is cooled to the ambient temperature.
5. The wind pressure value of the smoke prevention pressurized ventilator shall be calculated according to the unfavorable loop of the smoke exhaust system, and the residual pressure value in the smoke prevention staircase shall be 40~50Pa, and the residual pressure value in the front room, the fire prevention smoke exhaust fan shared front room, the fire prevention elevator front room, the refuge floor and other internal residual pressure values shall be 25~30Pa.
6. The noise limit of the fire exhaust fan at the operating point given in the manual should meet the requirements of JB/T8690-1998.
To learn the fire smoke exhaust system, it is necessary to master the 5 starting methods of the fire smoke exhaust fan:.
1. The automatic fire alarm system starts automatically: two independent fire detectors or a fire fire smoke exhaust fan disaster detector in the same smoke prevention zone are linked with the alarm signal of a manual fire alarm button to open the smoke exhaust port, and the action signal of the smoke exhaust port opening is used as the trigger signal to open the fire smoke exhaust fan.
2. Manually open the smoke exhaust port and start the smoke exhaust fan in chain.
3. Use the multi-line operation panel of the fire linkage controller to manually start the fire exhaust fan for a long distance.
4. Manually start the fire exhaust fan on site through the on-site fan control box.
5, the fire control room straight pull wire manual control start and stop.
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.