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What causes the fire exhaust fan to start before installation

Release Time：2021-07-20

Before starting the fire-fighting smoke exhaust fan, the user should strictly close the outlet regulating damper of the fan to prevent misoperation, start with load, check whether the smooth oil potential of the bearing is normal, freeze the water supply condition of the discharge heat pipe, whether the coupling is complete, check whether holes, and turn off the inlet and outlet conditioning intake valve of the centrifugal fan before starting the smoke exhaust fan to prevent operation errors, start with load, and check whether everything is normal, the power supply of the freezing heat conduction pipe, whether the coupling can be detailed, whether the access door can be closed, and after the DC meter of the fire smoke exhaust fan indicates that the direct current on the ship is restored, the opening of the shock absorber is adjusted to be in an appropriate position, and the operation of the fire smoke exhaust fan is reviewed for no abnormality.
When the fire exhaust fan cannot be started, what is the cause? When the smoke exhaust fan cannot be started, it is caused by various reasons. When the smoke exhaust fan is installed, the line may not contact the circuit. Many times, we will encounter such problems. When in use, the smoke exhaust fan is in good condition, but sometimes there is a problem of starting failure. So what causes the smoke exhaust fan to fail to start normally.
1. The power supply problem of the fire exhaust fan, no electricity.
2. Wiring problems, such as loose, short circuit, other wiring errors.
3. The current limiting device (such as air switch) of the line does not match and cannot meet the starting current.
4. The motor of the fire exhaust fan is damaged. If you use the fire exhaust fan, you can refer to these steps to solve it.
Before opening the box, the smoke exhaust fan shall check whether the package is complete and intact, whether all indexes of the smoke exhaust fan meet the requirements of relevant regulations, and whether the parts and components of the fire exhaust fan body of the fan and the necessary companies are required.
Use a 500V megohmmeter to measure the insulation resistance between the fan shell and the motor winding. The value should be greater than 0.5 megohmmeter. Otherwise, the motor winding should be dried. The temperature during drying should not exceed 120 ℃. The staff should carefully check whether the fan is damaged or not deformed during transportation, whether the fasteners of the fan fall off or loose, whether the impeller has rubbing phenomenon, and check all parts of the fan. If abnormal phenomenon is found, should wait for repair before use.
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.