Theory of and maintenance of manual and automatic automotive air conditioning and heating systems. Emphasis on the basic refrigeration cycle and diagnosis and repair of system malfunctions. Covers EPA guidelines for refrigerant handling and new refrigerant replacements. Prepares students for ASE certification tests. Fee: $16
PREREQUISITES: AUMT 1405 INTRODUCTION TO AUTOMOTIVE TECHNOLOGY,
AUMT 1407 AUTOMOTIVE ELECTRICAL SYSTEMS
COMMON COURSE OBJECTIVES: To Prepare students for entry-level employment and certification through ASE.
TEXTS AND REFERENCES USED:
1. AUTOMOTIVE HEATING AND AIR CONDITIONING, Mark Schnubel ISBN#
1428383247
2. Manufacturers' service manuals.
3. Selected films and charts from various sources.
4. Automotive books can be found in the RVS bookstore located downstairs in Bldg. G
5. ONLINE:http://acconline.austincc.edu or http://www.austincc.edu/autotech/
Today's Technician : Automotive Heating & Air Conditioning 4E (Today's Technician) Mark Schnubel,
Publisher: Thomson Delmar Learning
ISBN:
1428383247
INSTRUCTIONAL METHODOLOGY:
Using a combination of computer based instruction, lecture, and faculty demonstration, students will practice towards mastery of all required NATEF tasks,
COURSE RATIONAL:
Utilizing appropriate safety procedures, Explain the operation of the basic refrigeration cycle; diagnose and repair air distribution systems; demonstrate proper procedures for handling refrigerant; and describe the operation of air conditioning and heating controls.
COURSE OUTLINE:
1. ORIENTATION AND SHOP SAFETY:
A. Introduction to shop air conditioning special equipment
B. Brief review of shop safety with use of all shop equipment
C. Orientation of use of basic hand tools used in air conditioning repair work on automobiles2. DESIGN AND CONSTRUCTION OF VARIOUS A/C SYSTEMS:
A. The different types of air conditioning systems and the component parts that make them up
B. The proper procedures for hookup of a/c test equipment
C. Diagnosing and testing a/c systems
3. THEORY OF HEAT TRANSFER:
A. Understanding the removal of (latent) heat from the atmosphere
B. Describing the various high pressure stages of freon during the a/c cycle
C. Expansion valves, theory of operation and application within a typical a/c system.
4. A/C COMPRESSORS:
A. Construction, operation and application of various a/c compressors used on automobiles today
B. Testing and diagnosing a/c compressor problems
C. Tear-down and overhaul of a/c compressors
D. Compressor bearing and seal replacement
5. EVAPORATOR CORE AND CONDENSER:
A. Diagnosing evaporator core problems
B. Removal and replacement of evaporator core
C. Diagnosing and testing condenser problems
D. Removal and replacement of condensers
6. BREAKDOWN OF A/C SYSTEMS BY MANUFACTURER:
A. V.I.R. system (GM)
B. P.O.A. system (GM)
C. C.C.O.T. system (GM)
D. Continuous-run system (Chrysler)
E. P.O.A. system (Ford)
F. S.T.V. system (GM and Ford)
G. E.T.C. and E.P.C. (Chrysler)
H. A.T.C. (GM, Ford and Chrysler)
7. ELECTRICAL:
A. Typical auto a/c wiring systems
B. Diagnosing, testing and repairing related wiring problems
8. Retrofitting CCFC-12 to HFC-134a
A. HFC-134a oil requirements (pag,ester)
B. Redesigned accumulators and receiver/driers
C. Temperature and pressure differences of different refrigerants
D. Service valves for retrofit I.D.
E. Procedures for retrofitting alternative refrigerants
