Academic Catalog

APPR 185B: ADVANCED REFRIGERATION FOR SHEET METAL AIR CONDITIONING SERVICE

Foothill College Course Outline of Record

Foothill College Course Outline of Record
Heading Value
Units: 4.5
Hours: 30 lecture, 78 laboratory per quarter (108 total per quarter)
Prerequisite: Per California Code of Regulations, this course is limited to students admitted to the Sheet Metal-Air Conditioning Service Mechanic Program.
Degree & Credit Status: Degree-Applicable Credit Course
Foothill GE: Non-GE
Transferable: None
Grade Type: Letter Grade (Request for Pass/No Pass)
Repeatability: Not Repeatable

Student Learning Outcomes

  • A successful student will be able to diagnose a compressor burn out due to contaminated refrigerant.
  • A successful student will be able to perform a compressor change-out.

Description

Continued development of refrigeration skills with emphasis on the function of compressors, multiphase electric motors and piping systems.

Course Objectives

The student will be able to:
A. Describe refrigerant system compressor and motor functions.
B. Locate and repair HVAC refrigerant system problems.
C. Compare characteristics Air Conditioning refrigerants in use today.

Course Content

A. Describe refrigerant system compressor and motor functions
1. Refrigerant compressors
2. Description of reversing the rotation of three-phase motors
3. Explanation of how electric motors are cooled
B. Locate and repair HVAC refrigerant system problems
1. Use test equipment to verify and diagnose HVAC refrigerant system problems
2. Voltage variations affecting the hermetic compressor
3. Importance of refrigeration piping systems to compressor lubrication
4. How to condemn compressors on the basis of locked rotor
5. How to change out refrigeration compressors
6. Assemble refrigerant piping in close quarters installed conditions
C. Compare characteristics Air Conditioning refrigerants in use today
1. Definitions of saturation point and thermal properties of refrigerants
2. Identification of the temperature-pressure relationship of refrigerants
3. Differences between latent heat of evaporation and latent heat of condensation

Lab Content

A. Practice continued skill development in assembly and brazing of refrigerant piping systems
B. Practice diagnosis of refrigerant system problems
C. Practice of compressor and motor repairs and change outs

Special Facilities and/or Equipment

Laboratory equipped with air conditioning equipment.

Method(s) of Evaluation

A. Results of written quizzes and tests, and comprehensive written final examination
B. Shop participation
C. Assignments that may include outside readings, reports and worksheets
D. Maintenance of a workbook of student's daily work activities

Method(s) of Instruction

A. Lecture
B. Discussion
C. Laboratory
D. Demonstration

Representative Text(s) and Other Materials

Whitman, B., B. Johnson, J. Tomczyk, and E. Silberstein. Refrigeration and Air Conditioning Technology. Delmar, Cengage Learning, 2009.

International Training Institute for the Sheet Metal and Air Conditioning Industry. Service Work Lab Manual. IDI Multimedia, 2008.



NOTE: These are the standard Sheet Metal textbooks/workbooks used for this course. Although they may not be within 5 years of the required published date, they are the most current books used when teaching this course.

 

Types and/or Examples of Required Reading, Writing, and Outside of Class Assignments

A. An example of a reading assignment is to read Unit 23 in the Refrigeration and Air Conditioning Technology text, "Compressors"

B. An example of a written assignment is to provide written answers to the review questions at the end of Unit 23 in the Refrigeration and Air Conditioning Technology text, "Compressors"

 

Discipline(s)

Air Conditioning, Refrigeration, Heating