the proper way is to pull vacuum(29.9) for 30 min. not seconds to boil off the moisture,But you knew thatac machine is the only way to do it properly and is a lot faster. Evacuate till empty, do your thing, pull vacuum for 30 seconds, then fill to specified amount (takes 5-10 min max total if that)....Other than that your only other option is to open up a line (line at condenser is easiest) and let it drain. Just dont let the epa catch youand enjoy cleaning up greasy green ****.