Portland Community College | Portland, Oregon Portland Community College

CCOG for DST 115 Winter 2024

View archive version »
Course Number:
DST 115
Course Title:
Air Conditioning
Credit Hours:
Lecture Hours:
Lecture/Lab Hours:
Lab Hours:

Course Description

Introduces the principles of air conditioning. Includes air conditioning components, component functions, and servicing Caterpillar air conditioning systems. Requires a dealer letter indicating secured internship at a participating Caterpillar Dealership. Prerequisites: DST 114.

Intended Outcomes for the course

Upon completion of this course, the student will be able to:

  • Service Caterpillar air-conditioning systems using appropriate service literature and following safety protocols.

Course Activities and Design

This is an outcome-based course utilizing a lecture / lab format. This course includes videos, assignments, demonstrations, lectures, and hands on learning.

Outcome Assessment Strategies


·            Multiple choice, true/false, fill in the blank, short answer and essay testing

·            Hands-on practical testing

·            Daily lab assignments as defined by Caterpillar Curriculum / weekly and term projects

·            Attendance

·            Work ethics

Course Content (Themes, Concepts, Issues and Skills)

  • Fundamentals of Air Conditioning
  • Governmental Regulations
  • Service Procedures
  • Troubleshooting
  • 300 Series Excavator Air Conditioning System
  • Learn and practice facility and equipment safety
  • Explain the Basic Air Conditioning Principle of Operations
  • Identify A/C system components and explain operation
  • Hook up and use the Manifold Gauge in system diagnostics
  • Use the Refrigerant Identification Station to identify unknown refrigerant
  • Operate Refrigerant Recovery, Recycling, and Charging Equipment
  • Use the Leak Detector and Refrigerant Dye to find leaks in the system
  • Perform A/C System Diagnosis and Repair
  • Discuss the use of Flushing Equipment to flush system components
  • Identify components and perform the electrical diagnostic procedure on the 300 Series Excavator A/C system.