When installing any type of access fitting onto a sealed system what should you do?

When installing any access fitting onto a sealed system, it's crucial to first ensure that the system is depressurized to avoid any hazardous leaks. Next, clean the area around the installation site to prevent contamination. After that, carefully follow the manufacturer's instructions for the fitting installation, ensuring that it is securely fastened and sealed to maintain system integrity. Finally, perform a leak test after installation to verify that the fitting is properly sealed.