The pressure of a certain section in the coke oven gas collection system cannot be adjusted automatically
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The pressure of the general gas collection pipe is set at around 120 Pa, and it can be well controlled once automatic operation is initiated. Currently, one of these pressures cannot be controlled automatically; once automatic control is activated, the opening degree of the flap drops to the set minimum of 30%, and the pressure continues to decrease, reaching as low as 0. As a result, manual control has to be used again. (A few days ago, due to a fire in the coke oven, this pressure and the valve signal lines were replaced once.) I invite all colleagues to share their experiences and learn from each other*
You can check the condition of that actuator.
This is a problem related to instrument technicians. . ? Sure, you need to check the input and feedback signals first, and then look at the actuator.