Introduction to the maintenance of pneumatic actuators in use
Installation and maintenance of the pneumatic actuator: 1. The connection between the pneumatic actuator and the valve conforms to the ISO5211 standard, and can be directly connected with the valve. Can also be connected to any valve via transition brackets and fittings. 2. The coaxiality of the pneumatic actuator and the rotating shaft and the valve shaft must be ensured during installation. 3. The inside of the pipe joint and the conduit should be cleaned without excess, dust and oil. 4. The connection between the pneumatic actuator and the solenoid valve, positioner, filter, pressure reducing valve, etc. can be made of copper pipe or nylon pipe. In order to prevent dust and reduce noise, the exhaust port should be equipped with a muffler or a muffler throttle valve. 5. The adjustment screw on the pneumatic actuator can slightly adjust the opening angle of the valve, and the nut must be locked after adjustment. 6. After installation, the pneumatic actuator and the valve should be tested at the same time. The valve is pressurized to the rated pressure. The pneumatic actuator switches the air intake to the two air inlets of the pneumatic actuator with the air source pressure of 0.4~0.7MPa, and observes the valve. The opening and closing conditions of the machine should be flexible, and there should be no jamming phenomenon, and repeated tests should be done. 7. Install the solenoid valve pneumatic actuator. When debugging, it should be adjusted by manual device (the red button on the solenoid valve), and then energized and debugged. 8. Pneumatic actuators should be regularly maintained and maintained, and the air filters used in conjunction with the pneumatic actuators should be regularly drained and drained. Under normal circumstances, they should be inspected once every six months and overhauled once a year.