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What are the faults and troubleshooting methods of the stabilized solenoid valve?

                       
Update:01-11-2021
Summary:

The failure of the voltage stabilizing solenoid valve w […]

The failure of the voltage stabilizing solenoid valve will directly affect the operation of the switching valve and the regulating valve. Common faults include the failure of the voltage stabilizing solenoid valve, which should be investigated from the following aspects:

 

 

(1) The terminal of the voltage stabilizing solenoid valve is loose or the terminal of the wire is off.
(2) The coil of the voltage stabilizing solenoid valve is burned out. You can remove the connection of the voltage stabilizing solenoid valve and measure with a multimeter. If it is open, the coil of the stabilizing solenoid valve will burn out.
The reason is that the coil is damp, causing poor insulation and magnetic leakage, causing excessive current in the coil and burning. Therefore, it is necessary to prevent rainwater from entering the voltage regulator solenoid valve. In addition, if the spring is too hard, the reaction force is too large, the number of turns of the coil is too few, and the suction force is not enough to cause the coil to burn out. For emergency treatment, you can turn the manual button on the coil from the "0" position to the "1" position during normal operation to open the valve.
(3) The voltage stabilizing solenoid valve is stuck. The fit gap between the spool valve sleeve and the spool of the voltage stabilizing solenoid valve is very small (less than 0.008mm). Generally, it is a single-piece assembly. When mechanical impurities are brought in or there is too little lubricating oil, it is easy to get stuck. The treatment method can be made by inserting a steel wire through a small hole in the head to make it spring back. The fundamental solution is to remove the voltage stabilizing 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 the components and the position of the external wiring, so that the reassembly and wiring are correct, and check whether the oil spray hole of the lubricator is blocked and whether the lubricating oil is sufficient.
(4) Leakage. Air leakage will cause insufficient air pressure, making it difficult to open and close the forced valve. The reason is that the sealing gasket is damaged or the slide valve is worn, which causes blow-by in several cavities.
When dealing with the fault of the voltage stabilizing solenoid valve of the switching system, the appropriate time should be selected, and the treatment should be carried out when the voltage stabilizing solenoid valve is de-energized. If the treatment cannot be completed within a switching gap, the switching system can be suspended and handled calmly.

 

The following four conditions affect the normal operation and shorten the life of the voltage stabilized solenoid valve:
1. The medium changes during use.
2. Rust inside the receiver.
3. The oil of the air compressor is oxidized to produce carbon particles, tar and other sundries, which are mixed into the pipeline.

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