Standard |
Provides instruction in identifying, installing, and testing commonly used electrical components in an air conditioning system. Topics include: pressure switches, overload devices, transformers, magnetic starters, other commonly used controls, diagnostic techniques, installation procedures, and safety.
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Competency Areas |
Hours
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Pressure
Switches |
Class |
2 |
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Overload
Devices |
D. Lab |
6 |
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Transformers |
P. Lab/O.B.I. |
0 |
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Magnetic
Starters |
Credit |
5 |
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Controls |
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Prerequisites/Corequisites: |
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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PRESSURE SWITCHES
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2 |
5 |
0 |
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Theory |
Explain the reasons for pressure switches. |
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Application |
Install a low-pressure safety cut out on refrigeration
systems. |
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Troubleshooting |
Test pressure switches for correct operation. |
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OVERLOAD DEVICES
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2 |
5 |
0 |
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Theory |
Discuss the difference between a thermal overload and
a magnetic overload. |
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Application |
Replace a thermal overload on air conditioning
compressors. |
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Troubleshooting |
Check for continuity in several thermal overloads. |
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TRANSFORMERS
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2 |
5 |
0 |
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Theory |
Discuss the purpose of the transformer in an air
conditioning system. |
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Application |
Replace a transformer on an air conditioning system. |
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Troubleshooting |
Test primary and secondary cores of transformers with
VOM. |
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MAGNETIC STARTERS
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2 |
5 |
0 |
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Theory |
Discuss the differences between a magnetic starter and
contractor. |
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Application |
Replace a magnetic starter on an air conditioning
compressor. |
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Troubleshooting |
Test various magnetic starters with a VOM. |
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CONTROLS
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2 |
5 |
0 |
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Types |
Identify and explain several common controls used on
air conditioning systems. |
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DIAGNOSTIC TECHNIQUES |
4 |
20 |
0 |
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Application |
Follow troubleshooting charts to isolate problems. |
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Use accepted troubleshooting methods to locate problems. |
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Use test instruments to locate and verify problems. |
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INSTALLATION PROCEDURES
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4 |
15 |
0 |
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Application |
Install a humidistat on an air conditioning system by
following manufacturer recommendations. |
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Install various electrical control devices on an air conditioning system by following manufacturer recommendations. |
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SAFETY
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2 |
0 |
0 |
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Safety concerns |
Discuss the safety concerns of the technician when
dealing with electrical components. |
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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.
New Delhi: Wiley Eastern, Ltd. http://www.wiley.com/.
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/.