Exhaust fans can play the role of replacing indoor and outdoor air, ensuring indoor air circulation and removing some unpleasant smells. Like the toilet in the home, the kitchen, and then factories, hospitals and so on will install exhaust fans. The principle of the exhaust fan is similar to that of the electric fan, so if there is a fault such as not turning, it is similar to the troubleshooting method.
First, what is the reason that the exhaust fan does not turn
1. The motor of the exhaust fan lacks lubricant, which will occur after a long time of use, resulting in the failure of the exhaust fan blades to rotate. After turning off the power supply, gently turn the fan blade. If it turns astringently, it indicates that there is no oil and needs to be refuelled. But the rotation is easy, indicating good lubrication, can be investigated for other reasons,
2. Capacitor damage, exhaust fan lack of power, resulting in speed reduction or directly stop working.
3. The power supply is in poor contact. After a long time, the power cord will age, resulting in poor contact and unable to operate.
4. Too much motor wear. If the fan is used for a long time, the motor will wear out. It is easy to burn out when the motor’s shaft sleeve is worn out. If the motor is used for a long time, it will also increase the internal resistance of the motor and reduce the load capacity, resulting in the inability to drive the blades to rotate.
5. Overheating of the motor will also lead to the decrease of the load capacity of the motor, and the active power of the motor will be reduced, resulting in the failure to drive the load.
Two, what is the reason that the exhaust fan turns and does not turn
1, long-term overheating, resulting in the fan will not rotate. There is a motor in the fan device, and inside the motor there will be an overheat circuit breaker. If there is a short circuit in the winding, the heat will increase for a short time. In this case, the motor will stop working.
2. Poor maintenance and long-term lack of lubricating oil. Make sure there is grease on the fan shaft section, otherwise the motor on the fan blades will not be able to drag.
3, check whether the capacitor is in good condition, whether the capacity drops or fails to use for a long period of time, the capacity of the starting capacitor is reduced, resulting in a small starting torque of the motor, so as to be unable to drive the load.
4, electrical fault problems, such as line damage.
Three, how to clean the ventilation fan
1. Before cleaning the fan, remove the power supply. Do not remove the power supply with wet hands.
2. Dilute with a small amount of neutral cleaner and warm water, then wipe down the ventilation fan.
3. Remove the screws from the fan using a screwdriver, and then remove the fan blades and filter to clean the fan. Before cleaning, you can first dip the fan blades and filter into the prepared cleaning solution. Then use a brush to clean the fan blades and strainer.
4. Dip the cloth into the cleaning solution, then wipe the vent and other dirty parts.
5. After cleaning, you can install boot test. If there are other problems, step by step check the installation for errors.
What is the reason why the exhaust fan does not turn
