Originally Posted by ronkingroll
It just stops pulling gas out of the system. I've ordered a new vacuum pump. My understanding now is that the Appion does not actually pull a vacuum and I dont think i'm actually getting a good vacuum to start with. We'll see how the new pump changes things.
What you have is not a vacuum pump it's a reclaimer. The pump you have is used to remove freon from the system and into a reclaim drum. For pulling a vacuum before recharging a system that has been opened you need a vacuum pump which should look more like this