Fault judgment of pneumatic butterfly valve pneumatic actuator not working

The failure of pneumatic butterfly valve pneumatic actuator not working may be in the following situations:

      1. Air source problem: Check whether the air source is supplied normally and confirm whether the pressure meets the requirements of the actuator. If the air source is normal, the air source problem can be eliminated by checking whether the air source valve is open and whether the air source pipeline is blocked.

      2. Pneumatic actuator failure: Check whether the actuator has air leakage. You can judge by observing whether the pressure gauge has a drop in pressure or listening to whether there is a sound of gas leakage. If there is air leakage, it may be that the sealing ring is damaged or other components are faulty, and repair or replacement is required.

      3. Electrical problem: The actuator air source is controlled by the solenoid valve. Check whether the solenoid valve power supply is normally connected, whether the fuse is burned out, and whether the circuit is broken. You can use a multimeter to check whether the circuit is on and off and whether the voltage is normal.

      4. Control signal problem: If the actuator works according to the control signal, check whether the control signal line is connected normally and whether the control signal is sent in place. You can use an oscilloscope or a multimeter to measure the signal voltage to determine whether the control signal is normal.

      When diagnosing a fault, you can check it one by one according to the above methods, and determine the specific cause of the fault based on the inspection results, and repair or replace the corresponding parts. If the above methods still cannot solve the problem, Zhejiang Fugao recommends consulting professional technicians for help.