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DCS: Professional HVAC-R Refresher Certificate Course

CREATED BY

Directcool Solution

LAST UPDATED

April 2023

PROVIDED BY

Winbridge Atlantic Capital

DESCRIPTION

Designed for the working technician with three (3) or more years experience and the
ability to self-motivate; this course focuses on the revision of high-temperature refrigeration
(air conditioning) systems such as package equipment, split-type, and central air
conditioning systems. Troubleshooting techniques are highlighted using simulative
exercises to increase muscle memory for skillful execution of any HVACR task.
Technicians will also be tutored in the development of soft skills for better
communication with their customers.

WHAT YOU'LL LEARN

Industry Overview

Tools

REFRIGERATION I

REFRIGERATION II

REFRIGERATION III

REFRIGERATION IV

COMPONENTS

MOTORS

TROUBLESHOOTING I

TROUBLESHOOTING II

AIR-FLOW

TROUBLESHOOTING I

INSTALLATION

SYSTEM START-UP PROCEDURES I

SYSTEM START-UP PROCEDURES II

ELECTRICAL I

ELECTRICAL II

ELECTRICAL III

HEAT PUMPS

TROUBLESHOOTING HEAT PUMPS

KNOWLEDGE-BASED OBJECTIVES

Discuss safety issues that air conditioning and refrigeration technicians
must concern themselves with in order to remain safe on the job.

Discuss the latest advances and trends in green technology.
Explain the concepts of heat transfer, Btu, temperature, heat content, sensible heat, latent heat, pressure, gas laws, and work, and describe how they apply to air-condition and refrigeration systems
Describe the four basic components that make up the vapor-compression
refrigeration cycle
Identify the four major system components and explain their functions in
the refrigeration system
Explain the functions and desired characteristics of system refrigerants
Discuss the EPA laws governing safe refrigerant handling and transport
Explain the concepts of recovering, recycling, reclaiming, and retrofitting
refrigerants
Explain the difference between conductors of electricity and insulators
Describe the characteristics of electricity
Explain the concepts of voltage, current, and resistance
Explain Ohm’s law
Explain the differences between series and parallel circuits
Describe the tools and equipment used to measure voltage, current, and
resistance in electric circuits
Describe the motors and controls commonly found in air-conditioning
systems
Explain the operation of a heat pump system