Portland Community College | Portland, Oregon

Course Number:
AM 171
Course Title:
Heating & Air Conditioning Systems
Credit Hours:
4
Lecture Hours:
0
Lecture/Lab Hours:
85
Lab Hours:
0
Special Fee:
$24.00

Course Description

Introduces theory, operation and repair of automotive heating and air conditioning systems. Includes the testing and repair of HVAC control systems on approved customer automobiles. This is the capstone course building on the skills, knowledge and abilities learned through successful completion of AM 163. Prerequisites: CG 209. Audit available.

Addendum to Course Description

Students will study the fundamentals of automotive heating and air conditioning systems. This includes theory, operation, safety factors, components, electrical and vacuum controls. Proper handling of refrigerant and antifreeze will be discussed as well as government regulations concerning their use. Correct use of air conditioning recovery and recycling equipment will be presented. Students will test, diagnose and repair problems on customer and school owned vehicles.

Intended Outcomes for the course

Upon completion of the course students should be able to:

  • Perform heating and air conditioning system inspection, maintenance, adjustments and repair with limited supervision.
  • Perform engine cooling system maintenance, diagnosis and repairs as related to heating and air conditioning with limited supervision.
  • Communicate effectively with employers, customers and co-workers.
  • Access and utilize repair information in a rapidly changing technology.
  • Develop and implement strategies and processes to solve heating and air conditioning repair problems.
  • Perform heating and air conditioning repair to professional and ethical standards.
     

Outcome Assessment Strategies

To reach the outcomes goals students will complete the following tasks
1.Perform heating and engine cooling system tests and determine necessary action
2.Perform air conditioning tests and determine necessary action
3.Use refrigerant recovery and recycling equipment correctly and safely
4.Diagnose air conditioning and heating failures and make repairs on school owned and customer cars
5.Identify different types of air conditioning systems
6.Achieve minimum of 70% on written tests
7.Meets minimum requirements for attendance and standard shop practices

Course Content (Themes, Concepts, Issues and Skills)

Students will study the following concepts:
•Sources of heat in an automobile
•Nature of heat
•Heat transfer; conduction, convection and radiation
•Pressure
•Vacuum
•Physical principles of refrigeration
•€œConditioning€ air
•Properties of refrigerants
•Air conditioning system retro-fits .Competencies/Skills:
•Familiarization with government regulations concerning the use of refrigerants
•Use refrigerant recovery and recycling equipment safely
•Inspect, test, diagnose and repair various air conditioning systems
•Inspect, test, diagnose and repair heating and engine cooling systems
•Use all forms of technical service information
•Practice safe tool and equipment usage
•Read and interpret wiring and vacuum diagrams
•Provide accurate verbal and written description of testing and diagnostic procedures .

Related Instruction

Computation
Hours: 15

Perform heating, ventilation and air conditioning inspection, maintenance, diagnosis and repairs to industry standards.

Students measure HVAC system components using precision instruments, such as digital multimeters, digital scales, temperature probes, specialized pressure equipment, climate gauges and compare results with manufactures/industry specifications.  Apply Ohm€™s Law theory to basic circuit analysis.

Students perform HVAC system analysis/testing, using temperature probes, specialized AC equipment, scales, pressure gauges, meteorological data, refrigerant reference charts and compare readings to manufacturers/industry specifications.

Assessment:  Feedback is immediate, direct and pass/no pass for classroom or lab assessed activities.  Homework and exams are €œA-F€ grades with direct feedback delivered within 1 week.

Communication
Hours: 3

1. Develop and implement strategies and processes to solve Heating, Ventilation and Air Conditioning system repair problems.
2. Communicate effectively with employers, customers and co-workers.
 

Students work in teams to communicate with staff to check out tools, school cars, and have repair orders written for lab projects.
Students present a verbal report to the class on a subject of their choice related to current industry technical advances, innovations, safety standards, and/or diagnostic or trouble shooting procedures related to HVAC systems.

Assessment:  Feedback is immediate, direct and pass/no pass for classroom or lab assessed activities.  Homework and exams are €œA-F€ grades with direct feedback delivered within 1 week.

Human Relations
Hours: 15

Perform Heating, Ventilation and Air Conditioning system repair to the highest professional and ethical standards.

Students build on previous course work in human relations to continue the practice of human relations introduced through class discussions and homework.
Students work in teams to complete assigned lab projects.  Team work is focused on working in a diverse cultural environment, being sensitive to Others needs and diffusing difficult situations in a calm and respectful manner. 
Students work with lab partners, staff members, and their instructor to bring customer/school cars in /out of the shop for class lab projects.

Assessment:  Feedback is immediate, direct and pass/no pass for classroom or lab assessed activities.  Homework and exams are €œA-F€ grades with direct feedback delivered within 1 week.