How about the valve core of the pneumatic control valve The valve core of the pneumatic control valve is a movable part, but in the pneumatic control valve, it is really the most seriously damaged. After using the pneumatic control valve for a long time, it will be found that the erosion, corrosion and damage of the valve core are the most serious in the whole valve body of the pneumatic control valve. Therefore, in the repair and maintenance of pneumatic control valve, we need to pay attention to whether the valve core is corroded and worn, what the situation is, and whether the valve core needs to be replaced accordingly.

10:43 2019/11/223. After the detection of water immersion for 1s, the valve closing indicator will be short once every second, and the buzzer will also sound briefly. At this moment, the valve will start to close until it is fully closed. After the valve is closed in place, the valve closing indicator will always be on. (If a locked rotor is encountered in the process of closing, the detector will try to run to the open position, and then close again. If it cannot be closed three times or the rotor is locked again in the process of opening, the valve closing indicator will always flash, and the buzzer will also sound. It will prompt that the valve is failed to close, and manual processing is required).
4. After the water immersion problem is eliminated, press the valve opening button to open the valve and restore to normal condition.
5. The valve opening and closing actions can be manually operated, and the valve opening is not allowed when the battery power is low
6. Press the power supply when the machine is turned on, the buzzer will sound for a long time, and the indicator light will flash for one time in sequence, then the power supply will be closed without water immersion detection
7. In the monitoring condition, the power indicator, the valve opening indicator and the valve closing indicator flash once every 10 seconds to indicate the power. Three lights flash once to indicate that the power is sufficient, two lights flash once to indicate that the battery can be replaced, one light flashes once to indicate that the battery power is low, and the valve will be automatically closed after 8 hours. When it is low to 2 lights, except for the alarm for 2 minutes, other devices do not act. When only one indicator light alarms, the power is very low, and the power indicator light flashes once every 1s.
8. In case of flooding or low power, the buzzer can be closed by briefly pressing the valve closing button. When a new alarm type appears, the buzzer will ring again, and the valve closing button can be used continuously to close the sound.