Troubleshooting help needed-AC pressures

20-30 minutes after reaching 28-30 inches of vacuum is adequate for almost any system that wasn't at the bottom of a lake.

I was just going by what classic instructions stated. They said for a new system you want to be sure all the moisture is boiled out. When I have it done again, I'm going to o take note of the pressures, as I do believe it should be cooler coming out of th vents.