What should be done if you install an access fitting onto a sealed system?

When installing an access fitting onto a sealed system, it is crucial to perform a leak test on the fitting before proceeding with recovery. This step is important because introducing a fitting to a sealed system creates a potential point for refrigerant leaks. Conducting a leak test ensures that the new fitting is secure and doesn't allow refrigerant to escape into the atmosphere, which is both environmentally harmful and a violation of EPA regulations.

By verifying that the fitting is leak-free, you protect both the integrity of the system and compliance with safety standards. This practice is essential to maintain system efficiency and prevent monetary loss due to refrigerant escape. It is also necessary to ensure that any future service or recovery processes are safe and effective.

Addressing the other options, filling the system with refrigerant before confirming the integrity of the fit could lead to leaks and potential system issues. Removing the fitting immediately may not solve the problem if it has already compromised the system, and keeping the system disconnected doesn't address the need for ensuring the fitting is secure before any recovery operations can proceed.