To repair R600A systems, you would need to use flameless and heatless equipment.
You'd need to use lokring equipment and technology for successful service calls.
For the units with R600a as the coolant please make sure to release all of refrigerant
before servicing the cooling system otherwise fires or explosion can result.
When you repair the refrigerating cycle system, the work area needs to be well ventilated.
Especially if the refrigerant is R600a, there are no fire or heat sources. (No smoking)
This video is for reference only and TLC is not liable for any 3rd party services rendered.
https://www.youtube.com/watch?v=iB7ZGYLHCdc