Micro solenoid valve failure causes and troubleshooting methods

Micro solenoid valve failure causes and troubleshooting methods< /span>

Solenoid valve Faults will directly affect the action of the switching valve and regulating valve. Common faults includeSolenoid valve does not operate, please check from the following aspects:

1. The micro solenoid valve connector is loose or the wire ends fall off, and the solenoid valve cannot be powered. Tighten the thread.

2. If the miniature solenoid valve coil is burned out, you can remove the wiring of the solenoid valve and measure it with a multimeter. If it is open circuit, the solenoid valve coil is burned out.

The reason is that the coil is damp, causing poor insulation. Magnetic leakage causes excessive current in the coil and burns out, so rainwater must be prevented from entering the solenoid valve. In addition, if the spring is too hard, the reaction force is too large, the number of coil turns is too few, and the suction force is not enough, the coil may be burned. During emergency treatment, the manual button on the coil can be moved from the "0" position during normal operation to the "1" position to open the valve.

3. The solenoid valve is stuck. The matching gap between the slide valve sleeve and the valve core of the solenoid valve is very small (less than 0.008mm). It is usually assembled in a single piece. When When mechanical impurities are brought in or there is too little lubricating oil, it is easy to get stuck. The treatment method can be to insert a steel wire through the small hole in the head to make it bounce back. The fundamental solution is to disassemble the solenoid valve, take out the valve core and valve core sleeve, and clean it with CCI4 to make the valve core move flexibly in the valve sleeve. When disassembling, attention should be paid to the assembly sequence of each component and the position of external wiring so that reassembly and wiring are correct. Also check whether the oil spray hole of the lubricator is blocked and whether the lubricating oil is sufficient.

4. Air leakage or liquid 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, causing air leakage in several cavities.

When dealing with the solenoid valve failure of the switching system, you should choose the appropriate time and wait for the < span style="font-size: 16px;color: rgb(0, 32, 96);">Solenoid valve is processed when it loses power. If it is in a If the processing cannot be completed within the switching interval, the switching system can be paused and handled calmly.

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