LAC 28:CV.2505
LAC 28:CV.2505. Refrigeration Principles and Practices
Cite as La. Admin. Code tit. 28, pt. CV, § 2505
A. General
1. Understand and apply the theory of heat.
2. Understand and apply the properties of refrigerants.
3. Understand and apply the mechanical refrigeration cycle.
4. Understand and apply pressure/temperature curves and charts.
5. Understand and apply the principles and the operation of compressors.
6. Understand and apply the principles and operation of condensers.
7. Understand and apply the principles and operation of metering devices.
8. Understand and apply the principles and operation of evaporators.
9 Understand the operation of refrigeration system accessories (e.g., receivers, accumulators, filter/dryers, sight glasses, valves).
10. Perform leak tests.
11. Evacuate and measure the vacuum level of refrigeration systems.
12. Recover refrigerants.
13. Charge refrigeration systems.
14. Recycle refrigerants.
15. Troubleshoot mechanical refrigeration systems.
B. Piping
1. Understand and apply the principles of piping systems, including the factors that affect pipe selection, pipe size, and system design.
2. Understand and select the proper fitting or valve for specific applications e.g.:
a. globe valves;
b. gate valves;
c. angle valves;
d. check valves;
e. elbows, tees;
f. unions;
g. couplings;
h. half unions.
3. Understand and apply the principles of pipe accessories e.g.:
a. flanges;
b. isolators;
c. hangers;
d. expansion joints;
e. expansion loops;
f. supports;
g. insulation.
4. Perform copper tubing operations, including:
a. cutting;
b. flaring;
c. soldering;
d. brazing;
e. bending; and
f. swaging.
5. Perform steel pipe operations, to include:
a. cutting;
b. reaming;
c. threading; and
d. connecting.
6. Perform PVC pipe operations, including:
a. cutting; and
b. connecting.