If the motor input voltage of the centrifugal fan is too low or the power is cut off in one direction, check the voltage and power supply in time. Incorrect coupling connection, too tight skirt or uneven gap, which should be readjusted and aligned; When the belt shaft of the fan is improperly installed and consumes too much useless work, it should be readjusted and aligned; If the fan joint works worse or the pipe network fails, it is necessary to adjust the working point of the fan joint and repair the pipe network system.
If the gate valve of the inlet pipeline is not closed when driving, it should be noted that the gate valve should be closed when driving; When the flow exceeds the rated value or the air duct leaks, turn down the throttle valve and check whether there is air leakage; If the conveying gas density is greater than the rated value, the pressure is too high, and the reason must be found out. If the gas temperature is too low, the air volume should be increased or decreased. If the centrifugal fan vibrates violently, the cause of vibration must be found out and eliminated to prevent future troubles.