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Solutions to common malfunctions of Siemens solenoid valves
The malfunction of Siemens solenoid valve will directly affect the operation of the switching valve and the regulating valve. Common malfunctions include that the solenoid valve does not operate. It should be checked from the following aspects:
(1) Siemens solenoid valve terminal is loose or the wire head is disconnected. The solenoid valve must not be electric, and the wire head can be tightened.
(2) Siemens solenoid valve coil burned out. You can remove the solenoid valve wiring and measure it with a multimeter. If it is open, the Siemens solenoid valve coil burns out.
The reason is that the coil is wet, causing poor insulation and magnetic leakage, which causes the current in the coil to be too large and burn out. Therefore, 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 coil turns is too small, and the insufficient suction force can also cause the coil to burn out. During emergency treatment, the manual button on the coil can be turned from the "0" position to the "1" position during normal operation to make the valve open.
(3) Siemens solenoid valve is stuck. The clearance between the spool and the spool of the solenoid valve is very small (less than 0.008mm), which is generally a single piece assembly. When mechanical impurities are brought in or the lubricant is too little, it is easy to get stuck. The treatment method can be penetrated with a wire through a small hole in the head to make it rebound. 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 of each component and the location of external wiring, so that the reassembly and wiring are correct, and also check whether the injection hole of the oil mister is blocked and whether the lubricant is sufficient.
(4) Air leakage. Leakage will cause insufficient air pressure, making it difficult to open and close the forced valve, due to damage to the sealing gasket or sliding valve wear, resulting in blow-by of several cavities.
When dealing with the malfunction of the solenoid valve of the switching system, you should choose an appropriate time and wait for the Siemens solenoid valve to be processed when it is out of power. If the processing is not completed within a switching gap, you can pause the switching system and handle it calmly.