by ellis93 » Mon Jul 14, 2014 3:20 pm
dazedandconfused wrote:Compressor works was the brand I believe. I was wondering if maybe I didn't pull vacuum enough before charging? I pulled for 20 minutes and let it sit for 10 minutes. Then I pulled it for an hour. The box is cold to the touch and the expansion valve is cold. Did you have to replace the drier every time too?
Just once,as long as you don't have it open to outside air for more than a few days it will be fine.
Vacuuming the system is just to remove the air and moisture from it. If your fooling with an old system then you'd do it a long time(especially if you've had it open to atmosphere for a while) to dry out the system and the desiccant bag in the dryer/accumulator.
If I install a new dryer with the rest of the system I generally don't pull a vacuum for so long. Really I let it drag down to 28 or30 and stop,letting it sit to check for leaks for a few min,then charge the system. All that sitting and waiting stuff cost me money so I tend to just get it done ASAP.
Last edited by
ellis93 on Mon Jul 14, 2014 3:24 pm, edited 1 time in total.
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