I forgot to add this link:
Summer A/C Guide, How it Works, and When it Doesn't - Honda-Tech
A great guide to basic automotive AC, but the system in our cars is not identical.
Quote:
Originally Posted by Timco
It was a day-long course and a 4-hour test to get my EPA license for refrigerant. It's all about the safe recovery and reclaim process. The vac pumps shown above only pull vacuum. They do not recover the old refrigerant safely. That takes a $1200+ reclaimer pump and hoses and a empty tank.
An empty system can be charged with nitrogen to check for leaks. Never use air.
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Tim is a professional. I am a hack.
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*Wear gloves & safety goggles, make sure nobody is filming, and don't breathe.
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