Final answer:
To determine the evacuation level when using a recovery system after November 15, 1993 on a system containing 100 lbs. of R-502, consult the manufacturer's guidelines or technical specifications. Follow the guidelines to evacuate the system to the specified vacuum level, such as 500 microns, to ensure proper recovery and minimize environmental damage.
Step-by-step explanation:
If you are using a recovery system manufactured after November 15, 1993 on a system containing 100 lbs. of R-502, you would need to evacuate it to a certain level to ensure safety. To determine the evacuation level, you would need to consult the manufacturer's guidelines or technical specifications for the recovery system. These guidelines provide the specific details on how much evacuation is required based on the type and quantity of refrigerant involved.
For instance, if you are using a recovery system that meets the requirements set by the Environmental Protection Agency (EPA), you would need to evacuate the system to a vacuum level of at least 500 microns. This is the standard requirement for recovering R-502, which is a refrigerant commonly used in commercial refrigeration systems.
It is important to follow the manufacturer's guidelines to ensure proper recovery and minimize the release of refrigerant into the atmosphere, which can contribute to environmental damage.