Low Economizer Pressure Alarm how to solve and reset carrier chiller

[@GaneshKamble-gd9cg]

Nice Video Sir, System ke sight glass refrigerant level at varios compressor capacities par ek video banaye. Liquid level kaise check karte hai. Us waqt pressure kitna hona chahiye or compressor par load kitna hona chahiye.

[@GaneshKamble-gd9cg]

Is chiller me refrigerant kitna charge karte hai. Receiver me kitna store karte hai charging karte waqt or charge kaise karte hai.
Or refrigerant receiver kaise karte hai. Please bataye.