REFR2204 - Commercial Refrigeration and Air Conditioning Lab

Competencies

1. Demonstrate the use of various personal safety equipment.
2. Demonstrate ways to safely remove high and low pressure manifold hoses.
3. Properly use safety glasses when working with refrigerants.
4. Demonstrate the ability to use the correct solder, brazing rod and flux for joining different types of metals.
5. Identify points in a refrigeration system where the refrigerant is saturated, superheated or subcooled.
6. Demonstrate use of saturation pressure charts in system analysis.
7. Demonstrate proper methods of recovering, recycling and reclaiming refrigerants.
8. Demonstrate methods of refrigeration piping to assure proper refrigerant flows and oil return.
9. Evaluate methods of measuring superheat and subcooling.
10. Demonstrate different procedures for finding leaks in a refrigeration system.
11. Compare methods of system evacuation used prior to charging.
12. Contrast charging by weight, evaporator superheat, condenser subcooling and performance charts.
13. Describe the difference between zeotropic and azeotropic blends and their effect on temperature glide.
14. Demonstrate the procedure for measuring and adjusting the superheat of a thermal expansion valve.