Quote:
Originally Posted by Whiskeydan
Tell me how it remains liquid in the "evacuated" system??? I say it is NOT possible to put 3lbs in without condensing. If the OP has reads 75psi on both lines, the last 'empty' can had to have 75lbs psi when disconnected.
I'd suggest jumping the compressor clutch to +12 volts and see what your pressures do. If the low side goes into a vacuum add more. It could be the low side switch needs to be 'tickled' into action. Seen it before...
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It is very possible (and industry standard practice) to charge as a liquid. It must absorb heat to vaporize, and this heat will be easily given up when it condenses.
When you charge as a gas, you are absorbing heat in your can and that heat must be released into the system, thus it takes a long time, or a compressor.
Charging as a liquid does not need any help from the compressor at all. It's possible. I just did it. Most professionals do it every day.