How can technicians reduce refrigerant loss from a purge unit on a CFC-11 chiller?

To effectively reduce refrigerant loss from a purge unit on a CFC-11 chiller, focusing on leak testing and repairing any leaks is essential. When refrigerants are allowed to escape through leaks, it not only impacts the system's efficiency but also contributes to environmental concerns, particularly with substances like CFC-11, which are known to deplete the ozone layer.

By conducting thorough leak testing, technicians can identify and locate any leaks within the system. Once these leaks are detected, repairing them will prevent refrigerant from escaping, thus minimizing loss and ensuring that the cooling system operates optimally. This approach is proactive and aligns with best practices in refrigerant management, ensuring compliance with regulations regarding the handling of refrigerants.

Prioritizing leak repairs makes a significant difference in maintaining refrigerant levels, contributing to both the efficiency of the chiller and environmental wellbeing. Other methods, such as replacing the purge unit or increasing the refrigerant charge, do not address the root cause of refrigerant loss, which is leakage, while operating at higher pressure does not effectively prevent loss and could lead to further complications within the system.