Why Centrifugal Fan Speed Instability

- Mar 18, 2019-

On the one hand, it may be because there are some problems in the four rectifier diodes of the centrifugal fan, which affect the function of the whole device. On the other hand, maybe the motor rotor and rectifier carbon powder or carbon brush itself is not equal, then you can first look at the adjustable resistance of the fan, if the resistance value changes with the adjustment is good.


On the other hand, the problem may arise in thyristor, such as open circuit, poor contact, short circuit, untouchable and so on, which are the causes of speed instability. In addition, if the adjustable resistance contacts badly, the stability of speed will also be disturbed.