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Online Course—HVAC (DAL)

  • Item #: 9234
  • Model: DAL-WEB-HVAC
  • Manufacturer: Diagnostic Auto Lab
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Upon completion of this course, technicians should understand and be able to apply their knowledge of:

HVAC Design and Operation - Heating and Engine Cooling

  • Heating System and Engine Cooling
  • Coolant
  • Air Delivery Subsystems
  • Basic HVAC Controls
  • HVAC Design and Operation - Refrigeration

Refrigeration Systems Overview

  • Orifice Tube Systems
  • Thermostatic Expansion Valve (TXV) Systems
  • Orifice Tube and Thermostatic Expansion Valve System Comparisons
  • Cooling Subsystems
  • Hybrid HVAC Electrical Systems

Principles of Refrigeration

  • Overview
  • Heat and Heat Transfer
  • Evaporation and Condensation
  • Pressure, Temperature, and Changes of State
  • The Basic Refrigeration Cycle
  • Systems Operation Overview
  • Refrigerants

Environmental Regulations

  • Environmental Regulations Overview
  • EPA Regulatory Requirements for Servicing of Motor Vehicle Air Conditioners
  • Handling CFC-12
  • Handling HFC-134a
  • Retrofitting Vehicles to Alternative Refrigerants

Primary Causes - What Can Go Wrong?

  • Leaks and Contamination
  • Component Malfunctions
  • Compressors and Clutches
  • Condensers and Evaporators
  • Restrictions
  • Driers

A Diagnostic Plan

  • System Diagnostic Worksheet
  • Customer Complaint Worksheet
  • CCOT Performance Test Results
  • VDOT Performance Test Results

Refrigerant System Service

  • What's in the System?
  • Sealant Detection
  • Using a Refrigerant Identifier
  • Refrigerant Sampling
  • Finding Leaks
  • Charging and Evacuating
  • Using the Snap-on® ECO Xtreme™

Testing and Service of Heating and Cooling System Components

  • Coolant
  • Hoses
  • Water Pump
  • Thermostat
  • Radiator
  • Testing and Inspecting a Cooling System