HCR 307 - Fundamentals of Refrigeration

1. Explain the principles of the refrigeration system
   1. Define what makes a good refrigerant
   2. Define the function of the four basic components of the refrigerant system
2. Explain safety procedures in working with refrigeration systems
3. Demonstrate those procedures
4. Explain the relationship between gage pressure, absolute pressure and a vacuum
   1. Define gage pressure
   2. Define absolute pressure
   3. Define a vacuum
   4. Outline the relationship between gage pressure, absolute pressure and vacuum
5. Identify the relationship between temperature, pressure, heat, and enthalpy
6. Explain temperature
7. Explain pressure
8. Define heat
9. Define enthalpy
10. Define sensible and latent heat
11. Distinguish between sensible and latent heat
12. Determine the proper operating temperatures and pressures of a refrigeration system
13. Successfully pass the EPA requirement test for Universal Certification
14. Explain the correlation between outdoor ambient temperatures and condensing temperature
15. Explain the correlation between the indoor or box temperature and evaporator temperature
16. Demonstrate the ability to set the superheat of the thermostatic expansion valve
    1. Use an electronic thermometer
    2. Read a Temperature/Pressure Chart
    3. Read a pressure gage
17. Install refrigerant gage-manifold assembly properly, using a service valve wrench
18. Remove refrigerant gage-manifold assembly properly, using a quick disconnect coupler
19. Demonstrate the proper methods to charge a system
20. Demonstrate the ability to leak check a refrigeration unit, using
21. Demonstrate the correct methods to braze and solder copper tubing
    1. Clean tubing and fittings
    2. Operate the torch set safely
22. Identify mechanical and electrical malfunctions in a refrigeration system
23. Solve problems with electrical test instruments
24. Describe the failure or problem given a condition
25. Correct the malfunction