General Learning Outcomes

Upon successful completion, the apprentice will be able to:

• Explain procedures used to select, use, and maintain tools and equipment.
• Identify hazards and describe safe work practices related to all tool categories.
• Identify hand tools, portable and stationary power tools and describe their applications.
• Identify diagnostic and measuring tools/devices and describe their applications, limitations, and procedures for use — including ammeters, voltmeters, ohmmeters, multimeters, recorders, phase detectors, megohmmeters, watt meters, gauges, and specialty instruments.
• Describe procedures to store and maintain hand tools and power tools.
• Describe procedures to store and maintain diagnostic and measuring tools and equipment.
• Describe digital technology and electronic devices and their use in diagnosing equipment and components.
• Identify electronic communication devices (computers, mobile phones, tablets) and describe their applications.
• Explain the importance of appropriate and effective use of electronic communication devices.

Introduction to Tools and Equipment

Refrigeration and Air Conditioning (RAC) mechanics work with a wide variety of tools and equipment on every job site. Selecting the correct tool, using it safely, and keeping it properly maintained are fundamental professional skills that directly affect the quality of workmanship, personal safety, and environmental responsibility.

This module is aligned with the Red Seal Occupational Standard (RSOS) for the Refrigeration and Air Conditioning Mechanic trade (NOA). It covers all competency areas required for 313A and 313D apprentices at the Level 1 stage, from basic hand tools through to digital diagnostic technology and material handling equipment.

General Safety Overview

Safety is the foundation of every task performed by an RAC mechanic. Before picking up any tool, the apprentice must be aware of the hazards present in the work environment and understand the safe work practices designed to eliminate or reduce those hazards.

Hierarchy of Hazard Controls

The hierarchy of hazard controls guides how risks should be managed, from most effective to least effective:

• Elimination — Remove the hazard entirely where possible.
• Substitution — Replace a hazardous tool or substance with a safer one.
• Engineering Controls — Isolate people from the hazard (e.g., machine guards).
• Administrative Controls — Change work procedures and provide training.
• Personal Protective Equipment (PPE) — Safety glasses, gloves, steel-toe boots, hearing protection.

Section 2 — Lessons at a Glance

Section 2 covers the full toolkit of an HVAC/R apprentice — from basic hand tools through to precision diagnostic instruments and specialty equipment. Each lesson is self-contained, but the diagnostic and measuring tools in Lesson 2.03 are referenced throughout the remaining sections of Level 1.