How to deal with the failure of the solenoid valve?
The rated voltage of the solenoid valve coil is DC12V, DC24V, AC24V(50/60Hz), AC110V(50/60Hz), AC220V(50/60Hz), AC380V(50/60Hz).
Generally, in electrical design, either AC220V(no need to install switching power supply, low cost, simple line and easy to maintain), or DC24V(commonly used safety voltage, switching power supply/solenoid valve coil are easy to repair and replace)
Test solenoid valve is good or bad method
The solenoid valve is first connected to the controlled medium (liquid, gas < with pressure; air The pressure value is the middle value of the pressure range used by the solenoid valve), and then the solenoid valve coil is energized, if the controlled medium has a change in the state from pass to break or from break to pass, then the solenoid valve is good, otherwise it is problematic.
What is the common fault of solenoid valve?
1, coil short circuit or break:
Detection method: First, use a multimeter to measure its on-off, and the resistance value approaches zero or infinity, which indicates that the coil is short circuited or broken. If the resistance value measured is normal (about tens of euros), it does not mean that the coil must be good (I once measured a solenoid valve coil resistance value of about 50 ohms, but the solenoid valve can not operate, after replacing the coil everything is normal), please conduct the following final test: Find a small screwdriver and put it near the metal rod in the solenoid coil, and then energize the solenoid valve, if it feels magnetic, then the solenoid coil is good, otherwise it is bad.
Solution: Replace the solenoid valve coil.
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