AirMan Compressor Low Engine RPM | air compressor fault

how to adjust the Engine RPM.
when i started the Compressor, it was showing "Low engine rpm" fault.
so i adjustedn the RPM . plz see the video and hit Like Button. thanks
‪@theclubksa‬
‪@PerfectCompressor‬

[@SleepyGolfCart-ns9ms]

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[@Hamzashahbaz2030]

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[@tonyrana5887]

Sir I have same compressor 830 have one problem engine switch offf time then air full release solenoid supply late cut offf what is problem sir
My two solenoid is going pls

[@ngabdulmufit7317]

Where is the sensor for rpm?

[@bossminhass]

02 wire sensor colors black and yellow, Under speed regulator valve, near to Separator Receiver tank side ( big hydraulic tank)