Liugong excavator solenoid valve coil inner diameter 19mm

The solenoid valve has two parts: electromagnetic coil and magnetic core. When the coil in the solenoid valve is powered on or off, the operation of the magnetic core will make the fluid pass through the valve body or be cut off, thus changing the direction of the fluid. Because the current passes through the coil, the solenoid valve coil may be burned out. Of course, the reasons for the burning out may be different. Let's take a look at the reasons for the burning out of the solenoid valve coil. To sum up, the causes of solenoid valve coil burning are generally:

1 coil quality problems, too frequent work will burn.

2. Turn off the instantaneous breakdown of surge overvoltage;

3 power supply voltage is too high, directly burned.

4 Repeated impact, frequent on-off to produce overcurrent or overheating;

Instability of installation and excessive mechanical vibration lead to coil wear, wire breakage and short circuit.

So how to detect the solenoid valve coil?

The simplest way is to use a multimeter to measure the resistance of the solenoid valve. The resistance of the coil should be around 100 ohms! If the resistance of the coil is infinite, it means that it is broken. If the measured resistance is normal, it doesn't mean that the coil must be good. You should also find a small screwdriver near the metal rod passing through the solenoid valve coil, and then electrify the solenoid valve. If you feel magnetism, then the solenoid valve coil is good, otherwise it is bad.

The above is the introduction of the reasons for the burning of the solenoid valve coil. Whether it is caused by external reasons or internal reasons, it should attract our attention. In normal use, water should be avoided from entering the solenoid valve, and the solenoid valve should be inspected from time to time to ensure that the solenoid valve can be used for a longer time.