There’s a legend on the process flow diagram that I don’t recognize; I’d like to ask the experts for help
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The drawing is for a diaphragm compressor – what is inside the red circle?
The image is too small; it should be an interlock code. Check the interlock list for those related to this motor.
This is an ‘I’ that stands for interlocking; it seems the character was printed a bit off-center
:L, it turned out there was a printing issue. Thank you
Check the interlock logic diagram; it should be an interlock
It is recommended to check the legend; it appears to be a chain signal based on visual inspection
It should be a current signal; a current signal is required to be obtained from the electrical distribution room