Introduction:

The transition to low global warming potential (GWP) refrigerants is transforming the HVAC/R industry by introducing environmentally sustainable technologies while requiring new competencies in safety, installation, servicing, and system maintenance. Modern HVAC/R systems utilizing refrigerants such as R32 and R290 demand specialized knowledge of system design, flammable refrigerant handling, commissioning procedures, leak management, and environmental compliance. This training program explores the principles, technologies, safety requirements, installation methodologies, servicing procedures, and maintenance practices associated with modern HVAC/R systems using low GWP refrigerants. It combines technical instruction with extensive hands on practical exercises using HVAC/R equipment to develop safe and effective operational practices.

Program Objectives:

By the end of this program, participants will be able to:

Analyze the characteristics and applications of modern low GWP refrigerants and HVAC/R technologies.
Evaluate safety requirements and handling procedures for flammable refrigerants, including R32 and R290.
Apply installation, commissioning, evacuation, charging, and refrigerant recovery procedures using modern HVAC/R equipment.
Examine maintenance, diagnostics, leak detection, and troubleshooting for HVAC/R systems utilizing low GWP refrigerants.
Explore environmental, safety, and regulatory practices supporting sustainable HVAC/R operations.

Target Audience:

HVAC/R Service and Maintenance Technicians.
Refrigeration and Air Conditioning Engineers.
HVAC Installation and Commissioning Personnel.
Mechanical Maintenance Engineers.
Technical Supervisors Responsible for HVAC/R Systems.

Program Outline:

Unit 1:

Low GWP Refrigerants and Modern HVAC/R Systems:

Evolution of refrigerants and environmental regulations.
Characteristics of R32 and R290 refrigerants.
Refrigerant classifications and flammability categories.
Comparison between conventional and low GWP refrigerants.
Modern HVAC/R systems designed for R32 and R290.
System components and operating principles.

Unit 2:

Refrigerant Safety Installation and Commissioning:

Safe handling of flammable refrigerants.
Hazard identification and risk assessment.
Installation standards and best practices.
Pipework installation and pressure testing.
Evacuation procedures.
System commissioning requirements.

Practical Exercises:

Safe refrigerant handling procedures.
Installation of refrigeration piping.
Pressure testing using nitrogen.

Unit 3:

Leak Detection Recovery Evacuation and Charging:

Leak detection methodologies.
Electronic and bubble leak detection techniques.
Refrigerant recovery procedures.
Refrigerant recycling principles.
Refrigerant charging techniques.
Performance verification after charging.

Practical Exercises:

Leak detection using electronic detectors.
Leak testing under different operating conditions.
Refrigerant recovery using recovery machines.
Vacuum and dehydration procedures.

Unit 4:

Maintenance Diagnostics and Troubleshooting:

Preventive maintenance procedures.
Inspection of refrigeration system components.
Compressor diagnostics.
Electrical troubleshooting.
Refrigeration cycle performance analysis.
Common faults in R32 and R290 systems.

Practical Exercises:

Preventive maintenance on operating systems.
Electrical measurements and diagnostics.
Refrigeration performance testing.
Fault diagnosis exercises.

Unit 5:

Environmental Compliance:

Environmental regulations governing refrigerants.
Refrigerant recovery and emission prevention.
Safe storage and transportation of flammable refrigerants.
Service documentation and maintenance records.
Best practices for high ambient temperature environments.
Emerging technologies in low GWP HVAC/R systems.

Practical Exercises:

Safety assessment during servicing operations.

Modern HVAC/R Systems and Safe Handling of Low GWP Refrigerants R32 and R290