Quote:
Originally Posted by dkveuro
I vacuum the system for 5 hours or so on vehicles that have been open for some time. Blowing out the system with shop air is okay as long as you purge with refrigerant before charging.
The ox-acetylene sets potential to explode is well known, either due to fire or incompetent handling. https://youtu.be/iam27Mh1zu4
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Holy smoke, that's some fireworks!
What do you use for a vac pump, single or dual stage? What vacuum level do you get it down to? What do you use for a vacuum gauge to see the level achieved?