DSL 121 Diesel Technology HVAC Repair and Diagnosis

Lecture Hours: 2
Lab Hours: 8
Credits: 6

Covers heady-duty air conditioning operation, trouble shooting and system repair. Prepares students to confidently work on heating and air conditioning systems in an industrial environment. Provides a strong background in the theory, diagnosis, and repair of HVAC systems and there related electrical and electronic systems.

Prerequisite: DSL 110 and DSL 111 each with a grade of C or better; or consent of instructor.
Concurrent: DSL 120.
Student Learning Outcomes:

Analyze and determine the problem and implement the correct repair of diesel HVAC, components, and systems.
Troubleshoot, evaluate and repair HVAC systems.
Disassemble, test, and reassemble HVAC components.
Research and locate repair literature.
Apply basic theory of diesel electricity, components, schematics, controls, and how they all relate to the HVAC system.
Conduct repairs in an ethical and professional manner, respecting industry safety and environmental guidelines.
Communicate with co-workers, customers, management and general public in a professional and knowledgeable manner.

Content Outline

Principles of HVAC
- Research vehicle service information
- Identify components, use equipment to diagnosis performance problems
- Identify refrigerant, perform performance test
Perform AC leak testing
Servicing HVAC systems
- Check pressures, visually inspect components
- Performance check evaporator and condenser
AC metering devices
- Line. O-ring, fittings, and compressor service
- Receiver/dryer service
- Evaporator housing water drain inspection
Trailer refrigeration
- Trouble shooting and performance testing
- Properly evacuate and recharge a system
- Remove and install a compressor