This module provides a step-by-step instructional guide on creating high-quality flare joints in copper tubing. It covers the mechanical process of using a flaring tool to expand the end of a tube, allowing it to be secured by a flare nut against a brass fitting. The content highlights critical quality control measures, such as proper tube height in the block and the use of oil to prevent friction damage during the flaring process.

This module examines the evolution of refrigerant chemistry and the industry-wide transition toward environmentally sustainable solutions. The content also addresses the emergence of A2L refrigerants, focusing on their reduced environmental footprint and their role in the future of the HVACR industry.

This module provides a comprehensive technical deep-dive into the safety protocols and legal requirements for managing A2L refrigerants. The content covers the establishment of safe work zones, including the recommended 10-foot radius and the use of Class B fire extinguishers. Additionally, it details critical site-specific safety measures for the transportation and bulk storage of mildly flammable gases.

This module introduces essential preventative maintenance measures and regulatory compliance standards for working with A2L refrigerants. It details routine inspection protocols, such as verifying cylinder labels and fire extinguisher status, and emphasizes the installation of advanced leak detection systems.

This module outlines critical emergency response procedures and first aid protocols for handling A2L refrigerants. It emphasizes the importance of consulting the Safety Data Sheet (SDS) to understand specific chemical hazards, such as those associated with R-454B, including frostbite and respiratory risks.

This final knowledge check is designed to reinforce key concepts from the lesson and assess your understanding. You’ll apply what you’ve learned through a series of multiple choice questions, helping ensure you’re confident and ready to move forward.