Standard |
ACT 102 - Refrigeration Systems
Components
Provides the student with the skills and knowledge to install, test, and service major components of a refrigeration system. Topics include: compressors, condensers, evaporators, metering devices, service procedures, refrigeration systems, and safety.
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Competency Areas |
Hours
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Compressors |
Class |
4 |
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Condensers |
D. Lab |
6 |
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Evaporators |
P. Lab/O.B.I. |
0 |
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Metering Devices |
Credit |
7 |
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Service Procedures |
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Refrigeration Systems |
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Safety |
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Prerequisites/Corequisites: |
ACT 100, ACT 101 |
Course Guide |
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Competency |
After completing this
section, the student will: |
Hours |
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Class |
D.Lab |
P.Lab/ O.B.I. |
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COMPRESSORS |
14 |
10 |
0 |
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Types of compressors |
Discuss types of compressors. |
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Theory of operation |
Discuss basic theory of operation for different types of compressors. |
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Compressor applications |
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Compressor servicing |
Discuss adding and removing oil from hermetic and semi-hermetic compressors. |
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Compressor troubleshooting |
Discuss types of compressor malfunctions. |
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Remove and/or install compressor. |
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Compressor safety |
Identify and discuss potential safety concerns in working with compressors. |
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CONDENSERS |
2 |
5 |
0 |
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Theory |
Explain the purpose of the condenser in the refrigeration system. |
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Types |
Discuss the differences between air-cooled and water-cooled condensers. |
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Application |
Observe the operation of various condensers and explain advantages/disadvantages. |
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Condenser servicing |
Properly clean condensers using accepted industry solvents and proper procedures. |
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Troubleshooting |
Check for correct condenser installation and operation. |
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Safety |
Discuss safety concerns in working with condensers. |
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EVAPORATORS
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2 |
5 |
0 |
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Theory |
Discuss the purpose of the evaporator in the refrigeration system. |
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Explain the "refrigeration effect." |
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Types |
Discuss the differences between bare-tube and fin-tube evaporators. |
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Application |
Observe fin-tube evaporator operation and explain the advantages. |
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Evaporator servicing |
Properly clean evaporator using accepted industry solvents and proper techniques. |
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Troubleshooting |
Discuss defrost methods and troubleshooting procedures. |
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Safety |
Discuss safety concerns in working with evaporators. |
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METERING DEVICES
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2 |
10 |
0 |
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Theory |
Discuss the purpose of metering devices. |
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Types |
Discuss different types of metering devices. |
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Applications |
Observe the use of several metering devices on classroom trainers. |
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Installation and service |
Adjust thermostatic and automatic expansion valves. |
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Remove and/or install expansion valves. |
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Troubleshooting |
Check system operation with various metering devices. |
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Safety |
Explain safety concerns of metering devices in the refrigeration operation. |
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SERVICE PROCEDURES |
4 |
10 |
0 |
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System operation and service procedures |
Perform complete system check. |
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Leak test, evacuate, and charge a refrigeration system. |
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REFRIGERATION SYSTEMS
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13 |
20 |
0 |
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Methods of repair |
Discuss valve packing. |
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Pump down a refrigeration system. |
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Remove and/or install condensers. |
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Discuss removing and installing mechanical seals. |
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Discuss refrigerant liquid receiver removal and installation. |
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Remove and/or install evaporators. |
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Remove and install filter dryers. |
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Remove and install T.E.V. components. |
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SAFETY |
3 |
0 |
0 |
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Electrical shock |
Discuss hazards associated with electrical shock. |
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Compressed gases |
Discuss hazards related to compressed gases used in refrigeration. |
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Rotating machinery |
Identify parts of refrigeration systems posing rotating hazards. |
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Lifting |
Identify safe methods of lifting heavy loads. |
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Ladders |
Follow safety guidelines in climbing ladders. |
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Heat |
Identify refrigeration system components where heat poses a hazard. |
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Suggested Resources |
Althouse, A. D., et al. (1988). Modern refrigeration & air conditioning.
South Holland, IL: Goodheart-Willcox.
Lang, V. P. (1987). Principles of air conditioning (4th ed.). Albany, NY: Delmar.
McQuiston, F. C., & Parker, J. D. (1988). Heating, ventilating, & air
conditioning: Analysis & design (3rd ed.). New York: John Wiley &
Sons.
Miles, L. (1987). Refrigeration & air conditioning (2nd ed.). Englewood Cliffs,
NJ: Prentice Hall.
Miller, R. (1983). Refrigeration and air conditioning technology. New York: Bennett
Il.
Prasad, M. (1983). Refrigeration & air conditioning. New Delhi: Wiley Eastern,
Ltd.
Rudman, J. (1991). Introduction to air conditioning, refrigeration, & heating.
Syosset, NY: Natl Learning.
Terminology of heating, ventilation, air conditioning, & refrigeration. (1986). Atlanta: American Heating, Refrigeration, & Air Engineering.