2. Try sucking. In the same way, turn up the air volume of the range hood, then stick a newspaper on the tuyere to see if the newspaper can absorb it, and then pull out the exhaust pipe of the range hood to see if it is as windy as last time. If the difference is large, it can be concluded that the exhaust pipe is blocked. If the air volume is almost the same twice, it is the quality problem of the range hood.
3. Light a lighter or candle, start the motor, and check whether to inhale or blow. Blowing air proves that the motor rotates reversely, and sucking air proves that the motor power is too small, the blades are deformed and the exhaust pipe is too long.
Extended data:
Maintenance of range hood:
1. When using the range hood, pay attention to the power safety and the power socket of the range hood. Because range hoods are used every day, special sockets with reliable ground wires must be used.
2. When using the range hood, pay attention to the exhaust gas discharged by the range hood. According to the fact, it can't be discharged into the hot flue. In addition, the lampblack machine should be turned on in advance before ignition cooking to ensure the lampblack removal effect.
3. Be sure to use a range hood. When cleaning, pay attention to cleaning the wind wheel and Shuang Ye check valve first, and then cleaning the blinds and the inner cavity of the ventilation duct. In addition, the oil stain and scale on the machine surface should also be cleaned, which can be cleaned with neutral detergent.