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Air compressor and gas tank

Air compressor and gas tank
August 23, 2024

Air compressors may often experience two abnormal operating phenomena:

1. The automatic air pressure switch refuses to operate when the air pressure exceeds the limit, causing the motor to fail to operate normally. The air pressure continues to rise, causing the motor to run overloaded and overloaded. In severe cases, failure and blockage may occur.

2. The air pressure automatic switch has a transient vibration phenomenon (especially when the air pressure is close to the upper limit or lower limit critical state), and at the same time, the AC contactor generates synchronous vibration. As a result, the main contact of the AC contactor is burned out or stuck under the impact of frequent starting current, causing shutdown or phase failure operation.

3. Automatic exhaust valve failure Air compressors generally do not have automatic exhaust devices. When the air pressure reaches the set pressure, it will automatically exhaust and reduce pressure after shutdown. It is preset for the next no-load start. After the exhaust valve fails, The air pressure in the air compressor cylinder cannot be released, which means that the motor starts with load, which may cause difficulty in starting or stall failure.

4. Sudden power outage during operation: If an air compressor controlled by automatic transmission suddenly stops power supply (such as commercial power, self-contained power supply conversion), the air pressure in the cylinder of the air compressor has no time to release and then restarts. The motor is starting under heavy load, which is likely to cause stall failure.

5. Too frequent starting: Due to irregular peripheral air consumption, when the air consumption is large, the motor is forced to start frequently. The heat margin generated by the large current during starting is not easy to dissipate, causing the motor temperature to rise and overheat, which may cause the motor to burn out.

6. Heavy load shutdown. The shutdown of the air compressor is different from other equipment. It shuts down when the set upper limit pressure is reached. AC contactors operate in sections under heavy loads and large currents. At this time, arc sparks are the most serious and pose a great threat to the damage of the AC contactor. Due to the damage of the AC contactor, a power failure will occur. Such as anti-seepage imbalance (phase lack) and other operating conditions.

7. Mechanical failure of the air compressor itself. The air compressor has uneven load characteristics, loud vibration and noise, and mechanical failures such as wear and damage caused by blocked transmission parts, which can easily cause motor overload (blocking, obstruction, etc.).

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