And that is exactly backwards from what I was taught. What you do is, you dump "a bunch" of charge into the HIGH side before you fire up the system. This gets the major part of the charge into the system, and yet, because it races from the (just past) compressor, through the condenser, and all the way around to the low side, there is almost zero chance of any liquid gettting into the compressor.
THEN you start the system and charge in the last of the gas into the low side, either CAREFULLy charging SMALL amounts of carefully metered liquid, or "gas only."
