Press the valve opening key, when the valve is fully opened in place, the valve opening indicator on the front panel will be on; Press the valve closing key, and when the valve is fully closed in place, the valve closing indicator on the front panel will be on; When the valve needs to be interrupted in the process of opening or closing, press the interruption key, and the valve will be interrupted. Short circuit terminals 4 and 7, and the trouble light on the front panel will be on. When the pneumatic butterfly valve is in the fully open position, adjust the adjustment potentiometer on the front panel to make the opening meter show 100%.

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