What precaution shoult be taken prior to recovering refrigerant from a chiller suspected of having tube leaks?

Before recovering refrigerant from a chiller suspected of having tube leaks, it is crucial to conduct a thorough leak detection assessment to identify the source of the leak. Additionally, ensure that the recovery equipment is properly calibrated and that all safety protocols are in place, including wearing appropriate personal protective equipment (PPE). It is also advisable to isolate the chiller from the system to prevent further refrigerant loss and to avoid contamination. Finally, ensure that the recovered refrigerant is properly handled and disposed of according to environmental regulations.