What must be performed with an inert dried gas for refrigerant systems before operation?

Before operating a refrigerant system, it is crucial to perform a leak test using nitrogen, which is an inert dried gas. Nitrogen is preferred because it does not react with other substances and can safely pressurize the system without introducing moisture or impurities that could compromise the integrity of the refrigerant.

Using nitrogen allows technicians to identify any potential leaks in the system by pressurizing it and monitoring for pressure drops over time. This is essential for ensuring the reliability and efficiency of the refrigerant cycle, as any leaks could compromise system performance and lead to environmental concerns due to the potential release of refrigerants.

The focus on inert gases like nitrogen ensures that the testing procedure is safe, effective, and does not introduce contaminants into the refrigerant system, which could lead to damage or failure.