Portland Community College | Portland, Oregon

Explain types of heat and heat movement, pressure/temperature relation-
ships, Celsius and Metric terms, and pressure calculations and terms.
Explain physics used refrigeration, magnetism, work energy, electrical
power, and the British Thermal Unit.
 Demonstrate knowledge of the history of how refrigeration was developed
and rated, refrigeration process, pressure/temperature relationships,
components, refrigerant characteristics, recovery of refrigerant, and
plotting the cycle.
Explain which tools and instruments are used, demonstrate how to use
them, and explain the advantages and disadvantages.
Explain the various fasteners used in the industry.
 Demonstrate knowledge of refrigeration tubing, working with tubing,
soldering and brazing, and heat sources.  Lab practice working with
tubing, flaring, swaging, soldering, and bending.  Discuss steel and wrought
iron pipe, joining pipe, and plastic pipe.
 Explain purpose of system evacuation, theory involved, and measuring
vacuum.  Discuss vacuum pumps, deep vacuum, multiple evacuation, leak
detection, and refrigerant recovery.  Discuss moisture, procedures, Schrader
valves, and gauge hoses.  Discuss system valves and use of dry nitrogen.
 Discuss various ways of charging a system.
 Demonstrate the ways and needs of instrument calibration.
 Discuss the various dangers pertaining to the refrigeration industry.
 

Class activities are comprised of lecture, discussion, and teaching aids.  Laboratory activities include use of tools, instruments, and training units.  Students required to work on training units and to guild soldering project.  Safety in the workplace will be stressed. 

Procedures will be discussed at the first class session and the instructor's grading policy will be referenced on the class syllabus.  Assessment will be based on attendance, weekly quizzes, and the final examination.

 A Pass - No/Pass grading option is not available for any APR (Apprenticeship) course.