In industrial production, pneumatic air compressors serve as crucial power source equipment, and their stable operation directly affects production efficiency. Among them, low noise air compressors are favored in precision manufacturing, medical and other industries due to their ability to reduce noise pollution in the working environment. However, recently, some enterprises have reported that some low noise air compressors have experienced continuous exhaust, which not only wastes energy but may also affect the lifespan of the equipment. This article, based on the characteristics of common models, will analyze the causes of the fault and provide solutions.
For the widely used screw air compressors, continuous exhaust may be caused by a faulty pressure switch. The pressure control system of a
Screw Air Compressor monitors the pressure in the air tank through a pressure switch. When the pressure reaches the set value, the switch should trigger the shutdown or unloading device. If the contacts of the pressure switch are stuck or the sensor malfunctions, it will cause the equipment to misjudge the pressure state and remain in the exhaust unloading mode. To solve this problem, the power should be disconnected, and the wiring of the pressure switch should be checked for looseness. If necessary, replace the pressure sensor of the same model to ensure accurate transmission of pressure signals.
The failure of the check valve is a common problem for all types of pneumatic air compressors. The check valve of a
Low Noise Air Compressor is installed at the inlet of the air tank and is designed to prevent the backflow of compressed air. If the valve flap is worn or the spring elasticity is insufficient, the compressed air in the air tank will flow back to the pump head, causing the pump head pressure to never reach the shutdown threshold and resulting in continuous exhaust. During maintenance, the check valve should be disassembled, debris in the valve seat should be cleaned, and the aged sealing gasket should be replaced. If the valve flap is deformed, a new check valve should be installed promptly to ensure its one-way conduction performance.
In addition, faults in the exhaust valve assembly may also cause continuous exhaust. The exhaust valve of a low noise air compressor is composed of components such as valve plates and springs. After long-term use, the valve plate may become stuck or the spring may break, preventing the exhaust channel from closing properly. For screw air compressors, it is also necessary to check whether the oil and gas separator filter element is clogged. A clogged filter element will cause excessive back pressure in the system, forcing the exhaust valve to remain open for pressure relief. At this time, the filter element should be replaced regularly, and the exhaust valve assembly should be cleaned to ensure the valve core moves freely.
Zakf technicians remind that in daily maintenance, the pressure setting value of the low noise air compressor should be checked regularly to ensure it matches the production requirements. Condensate water in the air tank should be drained weekly to prevent rusting of valve components. If the continuous exhaust problem persists after the above treatments, it is recommended to contact the manufacturer for inspection and repair of the control system to avoid more serious equipment damage caused by circuit faults. Through scientific troubleshooting and timely maintenance, the continuous exhaust problem of pneumatic air compressors can be effectively solved, ensuring the efficient and stable operation of the equipment.
