What are the specific reasons for a centrifugal fan not being able to draw air? And, what specific knowledge and understanding should we have about centrifugal fans, which are also a type of fan?

The main purpose of raising these questions is to introduce the content of the article, thereby enhancing everyone's familiarity with the website's products and benefiting from it.

What is the specific reason why a centrifugal fan does not draw air?

If the centrifugal fan does not draw air, first check whether there is a problem with the fan itself, such as whether there is a fan malfunction, and whether the system resistance is appropriate, whether the resistance is too high, resulting in the failure to draw air.

If there are no issues with the above two aspects, then it is possible that the wiring has been reversed. In this case, simply swapping the incorrect wiring can solve the problem.

What does the nameplate of the centrifugal fan indicate that the air pressure is 100mmH2O? In addition, what are the main ways to adjust the air volume on centrifugal fans?

If the nameplate of a centrifugal fan indicates a wind pressure of 100mmH2O, it means that the output pressure of the fan is 100mm water column, which is about 1kPa.

There are five ways to adjust the air volume of centrifugal fans, including adjusting the inlet and outlet air valves, adjusting the snail line air valve, adjusting the inlet blades, adjusting the speed, and adjusting the moving wings.

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3. Under the same power, which one has a greater suction force, centrifugal fan or axial fan? In addition, if the current of the centrifugal fan is too high, what are the main reasons?

If comparing centrifugal fans and axial fans at the same power, it should be that centrifugal fans have a higher suction force.

If the current of the centrifugal fan is too high, the main cause is the excessive load in the fan.