The troubleshooting and maintenance methods of solenoid valve are key steps to ensure its stable operation.
When troubleshooting solenoid valve, you should first conduct a preliminary inspection to confirm whether the wiring of the solenoid valve is intact and whether the power is connected. Use a multimeter to detect whether there is electricity at the coil junction box and whether the power supply voltage is stable and meets the specification requirements. If the power supply contact is poor or the terminal is loose, the coil junction box should be opened and the wire terminal screws should be tightened. If the power supply voltage is too high or too low, the voltage should be adjusted or a voltage stabilizer should be added to the power supply and control equipment.
The coil is an important part of the solenoid valve, and its failure may cause the solenoid valve to fail to work properly. If the solenoid valve does not respond after power is turned on and the sound of the coil being attracted cannot be heard, it may be that the coil is open or short-circuited. At this time, a multimeter should be used to measure the resistance value of the coil to determine whether the coil is intact. If the coil resistance value is abnormal, a new coil should be replaced in time. At the same time, the continuous operation of the coil exceeds its rated power, the power supply voltage fluctuates beyond the rated value, or the coil heat dissipation system is poor, which may also cause the coil to be abnormally high or even burn out. Therefore, when troubleshooting, the working state of the coil should be carefully checked, and necessary measures should be taken to prevent the coil from overheating.
Internal blockage or jamming of the solenoid valve is one of the common faults. If the solenoid valve cannot be opened or closed after power is turned on, it may be that the fluid exceeds the maximum working pressure or pressure difference, the moving magnetic core and impurities in the valve are blocked or stuck. At this time, the fluid delivery pressure should be reduced or a pressure relief facility should be added in front of the solenoid valve, the solenoid valve should be disassembled for cleaning, and a filter should be installed in front of the valve to prevent impurities from entering. If the solenoid valve is used for too long or its life expires, it may also cause blockage or jamming inside the valve, and a new solenoid valve needs to be replaced at this time.
The sealing performance of the solenoid valve directly affects its working effect. If the solenoid valve leaks fluid in the closed state, it may be that the sealing gasket fails due to wear or aging, there is damage between the valve core and the valve seat, or there are foreign objects remaining in the valve. At this time, the damaged or aged sealing gasket should be replaced in time, the status of the valve core and valve seat should be carefully checked and replaced or repaired, foreign objects in the valve should be removed, and no obstacles should be made to affect the sealing performance.
The solenoid valve is slow to respond or partially unable to act when performing an action, which may be due to wear of internal components, lack of necessary lubrication, weakened or damaged spring force, improper working pressure setting or excessive fluid viscosity. For these faults, the internal components of the solenoid valve should be inspected in detail, and lubrication or replacement is required if the wear is serious; the spring condition should be carefully checked and the damaged spring should be replaced; the working pressure should be adjusted to the appropriate range and the fluid viscosity should be appropriate.
The repair and maintenance of the solenoid valve should be performed by qualified professionals. During the repair process, make sure to disconnect the power supply and fluid supply first to avoid accidents. At the same time, regular inspection and maintenance of the solenoid valve can extend its service life and reduce the possibility of failure.
The troubleshooting and maintenance methods of the solenoid valve involve many aspects, including preliminary inspection and power confirmation, coil troubleshooting, valve internal blockage and stuck troubleshooting, sealing performance inspection and repair, slow action and partial inability to act troubleshooting, and professional repair and maintenance recommendations. When troubleshooting, the cause of the fault should be carefully analyzed and appropriate measures should be taken to deal with it; during the repair process, safe operation should be ensured and the guidance of professionals should be followed. Through regular maintenance and care, the stable operation of the solenoid valve can be ensured and its service life can be extended.
