How a nitrogen &141b work on a garbage air-conditioning unit

How to system cleaning air-conditioning unit
Application of 141B refrigerant
Detailed of how to used Nitrogen
Sa mga a/c technician mas maganda gawin muna
Ang pag flushing tulad nito bago ikabit ang compressor
My link ako dito panoorin nyo paano mag kabit ng compressor
https://www.youtube.com/channel/UC81W

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