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Video of HVAC 138 Vacuum P5 dehydration in HVAC course by Love2HVAC with Ty Branaman channel, video No. 165 free certified online
The importance of the vacuum in not just to remove the air and non condensable but to also Dehydrate the system. moisture inside the refrigeration system can quickly turn to acids and reek havoc on the unit.
This video discusses several factors about dehydration, vacuum and some myths related. it needs with a video of water boiling in a vacuum chamber.
Heating Ventilation Aire Conditioning vacuum training.