When installing any type of access fitting onto a sealed system EPA?

When installing any type of access fitting onto a sealed system, it is crucial to ensure that the system is properly evacuated and that the area around the fitting is clean to prevent contamination. Adhere to EPA regulations by using certified tools and techniques to minimize refrigerant leaks and maintain system integrity. Always follow manufacturer guidelines and local codes to ensure safety and compliance. Properly document the installation for future reference and maintenance.