I would like to ask what this control symbol means
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ZJP101 is a pneumatic diaphragm pump; the compressed air source should be located next to it. But what does FAL mean in the red box?
F flow, A alarm, L low. You combine them together
I think it should be written inside the ring of the gauge bulb in DCS
They’re not connected in sequence; it shouldn’t be the case, and it doesn’t go into DCS either, as there’s no indicator symbol showing that it has entered DCS