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What Should You Do If the Airflow of an Air Suspension Centrifugal Blower Decreases?

Post time: 2026-09-08 14:52:18

In recent years, air suspension centrifugal blowers have been widely used in wastewater treatment, industrial aeration, pneumatic conveying, and other industries due to their high efficiency, low noise, and relatively low maintenance costs. However, during long-term operation, some users may experience a decrease in airflow. Insufficient airflow can affect production processes and may even increase energy consumption. So, how should this problem be addressed?

Inspect the Air Intake System

Check Whether the Air Filter Is Clogged

The air filter is a critical component of the intake system. After prolonged operation, dust and debris can accumulate on the filter surface, increasing intake resistance and reducing the amount of air entering the blower.

When abnormal airflow is detected, the first step is to inspect the air filter. Cleaning or replacing the filter according to the operating environment can effectively restore air intake performance.

Examine the Intake Pipeline

Besides the filter, blocked, deformed, or leaking intake pipes can also reduce airflow. Even if the blower operates normally, excessive intake resistance may prevent it from reaching its designed airflow capacity.

Regular inspection of the intake pipeline and prompt repair of blockages or leaks are essential for maintaining stable performance.

Verify Operating Parameters

Monitor Changes in System Pressure

The airflow of an air suspension centrifugal blower is closely related to system pressure. Increased pipeline resistance or changes in downstream equipment may raise system pressure, resulting in reduced airflow.

Operators should compare operating data such as pressure, airflow, and motor current. If pressure rises abnormally, the discharge pipeline and end-use equipment should be inspected.

Check the Variable Frequency Drive and Control System

Many air suspension centrifugal blowers use variable frequency drives (VFDs) to automatically adjust motor speed. Incorrect parameter settings or faults in sensors and controllers may reduce rotational speed and lead to insufficient airflow.

In such cases, the control system should be checked and recalibrated by qualified technicians if necessary.

Inspect the Pipeline Network and End Equipment

Remove Pipeline Blockages

Air delivered by the blower must travel through the pipeline network. Debris, accumulated water, or other obstructions inside the pipes can increase resistance and reduce air delivery.

Regular inspection of pipelines, valves, and bends helps eliminate obstacles that restrict airflow.

Ensure Valves Are Fully Open

Valve opening directly affects airflow. Partially closed valves or malfunctioning regulating and check valves may create significant local resistance.

Checking that all valves are in their correct operating positions is an important step in troubleshooting airflow reduction.

Perform Preventive Maintenance

Record Operating Data Regularly

Without historical operating records, identifying the cause of airflow reduction becomes more difficult. Recording airflow, pressure, rotational speed, and current helps detect abnormal trends early.

Schedule Professional Maintenance

In addition to routine inspections, periodic maintenance of filters, pipelines, control systems, and related components helps ensure long-term stable operation.

Overall, reduced airflow in an air suspension centrifugal blower may result from clogged filters, intake pipeline problems, increased system pressure, improper control settings, or higher pipeline resistance. A systematic inspection of the intake system, operating parameters, pipeline network, and control system can quickly identify the cause and restore normal airflow while minimizing production losses and unnecessary energy consumption.

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