Reasons and treatment methods for the noise of centrifugal fans

Centrifugal fans have been used for a long time, and there will inevitably be some noise. How to maintain them? You can refer to the following methods:

1. Check whether the motor frequency is correct

Adjust the corresponding frequency to run.

2. Check whether the motor wiring method is correct

Adjust the correct wiring method.

3. Check whether the bearing is damaged

The operation specification for replacing the motor bearing is based on the operation standard book.

4. Check whether the centrifugal fan has absorbed foreign matter and whether the air duct is blocked

Clean the foreign body cleaning air duct.

5. Detect the disturbance of air flow, impact resonance, reflection resonance phenomenon

Add a muffler to the air duct and insulate the noise or add a soundproof box to the fan

6. Check whether the centrifugal fan bearing is damaged

Replace the fan bearing, the replacement method is based on the fan bearing replacement work standard.

7. Check whether the air duct is making noise and whether there is a common vibration. Whether the wall of the air duct is too thin

Add a support frame to the air duct or add sound insulation cotton to the air duct.

8. Check whether the fan is running in the correct direction

Adjust the running direction of the fan.

9. Check whether the fan belt is loose and makes noise

Replace the belt and adjust the tightness of the belt.

Dongguan Sanyue Precision Electromechanical Co., Ltd. is a technology-based enterprise focusing on the research and development, manufacturing, sales and after-sales service of various specifications of centrifugal fans, centrifugal fans, duct fans, high-pressure blowers and other series of pneumatic products. Passed CE\FCC\ROHS and other certifications, contact number: 0769-88811878.