The reason of low air volume of high pressure centrifugal fan

What is the reason of low air volume of high pressure centrifugal fan? Many industries use high-pressure centrifugal fan, fan can improve air pressure and emissions, and centrifugal fan use more, high-pressure centrifugal fan in what environment? In some places, the cooling of the centrifugal fan, but what?
Some industrial production needs relatively large air volume, we often use the air volume to determine the performance of the fan, operating efficiency, etc. .
In the transportation process, through the air duct, air duct, air duct thickness, the resistance is not uniform, the air flow, gas temperature, density, etc. . In the course of paving, the irregular paving, bending and leakage of air duct are the main factors to reduce the air volume of high-pressure centrifugal fan. High-voltage centrifugal fan generally adopts counter-rotating axial fan, using double motor type, so that product pressure is much higher than single motor. After start-up, the local voltage stability of the motor brought speed dissatisfaction, and the corresponding increase or decrease.
For the problem of low air volume of high-pressure centrifugal fan, what we need to do is to change the air volume, improve the air volume, adjust according to the found reasons, make the air volume gradually increase, reduce some problems should not appear.
How to maintain centrifugal fan suspension? The machine always has some time to pause, so in the pause, there are some issues to note that need to follow the rules. For example, how to arrange and place centrifugal fan suspension, even when using centrifugal fan suspension has two cases, whether to stop so, one is a short pause, the other is a long pause, regardless of the length of time, excellent blowers should pay attention to prevent freezing cracks.
Stop using the fan, when the ambient temperature is below 5 ° C, please discharge the equipment and pipe water, prevent the equipment and pipe freezing. That’s why we deal with cold crevices in pipes in winter. It would be careless of us not to deal with the remaining water in time. Also, what happens if you stop using it for a long time?
Anti-rust agent is applied to the surface of main parts such as bearings to prevent rusting. Fan rotor must be moved semi-monthly semicircle (180) , and before the rotation mark shaft end, so that the start of the rotor top at the bottom.