|
Standard |
Updated:
07/14/05; Posted: 07/28/05
Continues to provide experience in maintenance
techniques in servicing light commercial refrigeration systems. Topics
include: system clearing, troubleshooting procedures, replacement of
components, and safety.
|
Competency Areas |
Hours
|
|
|
System Clearing |
Class |
3 |
|
Troubleshooting Procedures |
D. Lab |
2 |
|
Replacement of Components |
P. Lab/O.B.I. |
0 |
|
Safety |
Credit |
4 |
|
Prerequisites/Corequisites: |
|
Course Guide |
|
Competency |
After completing this section,
the student will: |
Hours |
||
|
Class |
D.Lab |
P.Lab/ O.B.I. |
||
SYSTEM CLEARING
|
10 |
8 |
0 |
|
|
Theory |
Discuss the pump-down procedure. |
|
|
|
|
Application |
Evaluate a refrigerant system. |
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|
|
|
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|
|
|
|
|
|
Flush a burned-out system with R-H. |
|
|
|
TROUBLESHOOTING
PROCEDURES
|
8 |
5 |
0 |
|
|
Theory |
Discuss common service techniques. |
|
|
|
|
Application |
Check for proper refrigerant charge in systems. |
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|
|
|
Follow manufacturers' wiring diagram to diagnose system malfunction. |
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|
|
Use VOM to check for proper compressor winding readouts. |
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|
|
|
REPLACEMENT OF
COMPONENTS
|
8 |
7 |
0 |
|
|
Theory |
Discuss service techniques for various refrigeration
components. |
|
|
|
|
Application |
Replace a shorted compressor in a refrigeration system. |
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|
|
|
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Replace a thermostatic expansion valve. |
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Replace a filter-drier. |
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Replace an oil pressure safety control. |
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|
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Replace the fan motor on an air-cooled condensing unit. |
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|
|
|
SAFETY |
4 |
0 |
0 |
|
|
Theory |
Discuss the electrical safety concerns found in
troubleshooting. |
|
|
|
|
|
Discuss the safety concerns in dealing with refrigerants. |
|
|
|
|
Application |
Complete a thorough safety checklist on all commercial
refrigeration units in the shop area. |
|
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|
Suggested Resources |
Althouse,
A. D., et al. (1988). Modern
refrigeration & air conditioning. South Holland, IL: Goodheart-Willcox. http://www.goodheartwillcox.com/.
Haines, R. (1987). Control systems for heating, ventilating,
& air conditioning (4th ed.). New York: Van Nos
Reinhold.
Herman, S. L., & Sparkman, B. L.
(1986). Electricity & controls for
heating, ventilating, & air conditioning (4th ed.). Albany, NY: Delmar.
http://www.delmar.com/.
Langley, B. C. (1985). Control systems for air conditioning & refrigeration.
Englewood Cliffs, NJ: Prentice Hall. http://www.cefga.org/.
Langley, B. C. (1986). Cooling systems troubleshooting handbook.
Englewood Cliffs, NJ: Prentice Hall. http://www.cefga.org/.
Langley, B. C. (1988). Electric controls for refrigeration &
air conditioning (2nd ed.). Englewood Cliffs, NJ: Prentice Hall. http://www.cefga.org/.
Long, W. (1985). Refrigeration & air conditioning: Operation & analysis
servicing. New York: Macmillan. http://www.macmillan.com/.
Miles, L. (1987). Refrigeration & air conditioning (2nd ed.). Englewood Cliffs,
NJ: Prentice Hall. http://www.cefga.org/.
Miller, R. (1983). Refrigeration and air conditioning
technology. New York: Bennett Il.
Miller, R. (1988). Electricity for heating, air conditioning
& refrigeration. San Diego, CA: Harcourt Brace Jovanovich. http://www.harcourt.com/.
National Center for Construction Education and Research
(latest edition). NCCER: Core Curricula:
Basic Communication Skills. Englewood Cliffs, NJ: Prentice Hall. http://www.cefga.org/.
Prasad, M. (1983). Refrigeration & air conditioning.
Rudman,
J. (1991). Air conditioning, heating
& refrigeration mechanic. Syosset, NY: National Learning.
Smith, R. E. (1987). Electricity for refrigeration, heating &
air conditioning. Albany, NY: Delmar. http://www.delmar.com/.
Swenson, S. D. (1990). Troubleshooting & servicing air conditioning
equipment. Troy, MI: Busn News.
Terminology
of heating, ventilation, air conditioning, & refrigeration.
(1986). Atlanta: American Heating, Refrigeration, & Air Engineering.
Whitman, W., & Johnson, W. (1991).
Refrigeration & air conditioning
technology (2nd ed.). Albany, NY: Delmar. http://www.delmar.com/.