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Troubleshooting and Treatment of Common Faults of Air Compressor Solenoid Valves
- Nov 12, 2018 -

The electromagnetic components of the solenoid valve are composed of a fixed iron core, a moving iron core, a coil, and so on. The valve body is composed of a slide valve core, a slide valve sleeve, a spring base and so on. The solenoid is mounted directly on the valve body and the valve body is enclosed in a sealed tube to form a compact combination. The basic working principle is: when energized, the electromagnetic coil generates electromagnetic force to lift the closing member from the valve seat, and the valve is opened; when the power is off, the electromagnetic force disappears, the spring presses the closing member against the valve seat, and the valve is closed.

 

Common troubleshooting and treatment of air compressor solenoid valve

 1.The solenoid valve terminal is loose or the wire ends are off, when the solenoid valve is not energized, and the wire end can be tightened.

 

 2.When the solenoid valve coil is burnt out, the wiring of the solenoid valve can be removed and measured with a multimeter. If the circuit is open, the solenoid valve coil is burned out. The reason is that the coil is damp, causing poor insulation and magnetic leakage, causing the current in the coil to be too large and burning, so it is necessary to prevent rainwater from entering the solenoid valve. In addition, the spring is too hard, the reaction force is too large, the number of turns of the coil is too small, and the suction force is insufficient to cause the coil to burn. In the case of emergency treatment, the manual button on the coil can be turned from "0 position" to "1 position" during normal operation, so that the valve is opened.

 

 3.The solenoid valve is stuck. The clearance between the sliding valve sleeve of the solenoid valve and the valve core is very small (less than 0.008 mm), and it is generally a one-piece assembly. When mechanical impurities are introduced or the lubricating oil is too small, it is easy to get stuck. The treatment method can use the steel wire to break in from the small hole of the head to make it bounce back. The fundamental solution is to remove the solenoid valve, take out the valve core and the valve core sleeve, and clean it with CCI4, so that the valve core can move flexibly in the valve sleeve. When disassembling, pay attention to the assembly sequence and external wiring position of each component, so as to reassemble and wire correctly, and check whether the oil mist injection hole is blocked and the lubricating oil is sufficient.

 

 4.Air leakage. Leakage can cause insufficient air pressure, making it difficult to open and close the forced valve due to damage to the gasket or wear of the slide valve to cause several cavities to leak. When dealing with the solenoid valve failure of the switching system, the appropriate timing should be selected, and the solenoid valve should be processed when the power is lost. If the processing is not completed within one switching gap, the switching system can be suspended and take things easy.

 

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