1. Check that the belt is broken. If the belt of glass fibre reinforced plastic fan breaks, replace the new belt in time.
2, check whether the impeller is stuck in the state, and then deal with or replace the fan impeller of the FRP fan.
3, to see if the motor bearings are stuck, and then decided to replace the stuck motor bearings.
4, look at the motor has no phase of the situation, to see whether the fan fan power supply is open, processing, open the power supply, adjust the motor circuit can be.
5. Check the motor to see if it has been burned or to change or replace the motor in time.
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