Screw air compressors are very common in industrial use, and there are many components and parts in them. Any problem with each component will affect the operation of the screw air compressor. Solenoid valve is one of the common air compressor accessories. Its main function is to adjust the bias, flow, on-off and other parameters of the medium, so as to switch the pneumatic control air circuit. Therefore, solenoid valve failure is also one of the common air compressor accessories. We need to master the troubleshooting and treatment methods of air compressor solenoid valves.

01. If the solenoid valve wiring head is loose or the wire head falls off, the solenoid valve must not be powered, and the wire head can be tightened.

02. If the solenoid valve coil is burned out, the wiring of the solenoid valve can be removed and measured with a multimeter. If it is open, the solenoid valve coil is burned out.

The reason may be that the coil is damp, causing poor insulation and magnetic leakage, causing excessive current in the coil and burning, so it is necessary to prevent rainwater from entering the solenoid valve. So choose a waterproof solenoid valve outdoors. Or the spring is too hard, the reaction force is too large, the number of coil turns is too small, and the suction force is insufficient, which can also cause the coil to burn.

03. The solenoid valve is stuck. The clearance between the sliding valve sleeve and the valve core of the solenoid valve is very small (less than 0.008mm), and it is generally assembled in one piece. When mechanical impurities are brought in or there is too little lubricating oil, it is easy to get stuck.

The treatment method is to use a steel wire to poke it through the small hole in the head to make it rebound. The fundamental solution is to remove the solenoid valve, take out the valve core and 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 of each component and the external wiring position so that the reassembly and wiring are correct.

04. The solenoid valve of the screw compressor leaks. Leakage will cause a lack of air pressure, making it difficult to open and close the valve. The reason is that the sealing gasket is damaged or the sliding valve is worn, resulting in several cavities of gas leakage.

Of course, replacing a new air compressor solenoid valve is the best choice. Because the cost of a solenoid valve is not high, repeated repairs will consume more time and money, so it is better to choose a new valve.