Objectives

• After studying this unit you should be able to
• describe ozone depletion and global warming.
• discuss how CFCs deplete the earth’s ozone layer.
• differentiate between CFCs, HCFCs, HFCs, HFOs, and HCs.
• discuss popular refrigerants (including R-410A) and their applications.
• discuss refrigerant blends.
• discuss temperature glide and fractionation as it applies to refrigerant blends.
• discuss refrigerant oils and their applications.
• discuss EPA regulations as they relate to refrigerants.
• define the terms recover, recycle, and reclaim.
• describe methods of recovering refrigerants, including active and passive methods.
• discuss oil-less recovery machines.
• identify a DOT-approved recovery cylinder.
• describe a quick-connect or quick-coupler as they apply to refrigerant conservation.
• discuss the general considerations in retrofitting an R-22 system.

Next: Advance to the Learning Center Dashboard and complete the lesson.