Fundamentals of HVAC and Chiller Maintenance

Introduction:

HVAC and chiller systems play a vital role in maintaining reliable cooling, energy efficiency, and environmental control across commercial, industrial, and institutional facilities. Effective maintenance requires an understanding of refrigeration principles, system components, electrical controls, preventive maintenance practices, troubleshooting techniques, and safe servicing procedures. This training program explores the fundamentals of HVAC and chiller operation, maintenance methodologies, fault diagnosis, and servicing practices. It provides an institutional perspective on how systematic maintenance enhances equipment reliability, operational efficiency, and system longevity.

Program Objectives:

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

• Analyze the operating principles and components of chiller systems.

• Evaluate refrigeration cycles, electrical systems, and HVAC fundamentals.

• Assess preventive maintenance procedures for chiller equipment.

• Examine common chiller faults and systematic troubleshooting techniques.

• Explore safe servicing practices and operational maintenance requirements.

Target Audience:

• HVAC Technicians.

• Chiller Maintenance Technicians.

• Mechanical Maintenance Technicians.

• Building Maintenance Personnel.

Program Outline:

Unit 1:

Fundamentals of HVAC and Chiller Systems:

• Principles of HVAC systems and cooling applications.

• Refrigeration cycle fundamentals.

• Types of chillers and operating characteristics.

• Major chiller components and system functions.

• Heat transfer principles in chiller operation.

Unit 2:

Chiller Components and Supporting Systems:

• Compressors and compression principles.

• Condensers, evaporators, and expansion devices.

• Refrigerants and refrigerant properties.

• Pumps, cooling towers, and water circulation systems.

• Basic electrical components, controls, and protection devices.

Unit 3:

Preventive Maintenance of Chillers:

• Preventive maintenance planning and inspection procedures.

• Mechanical maintenance of major chiller components.

• Refrigerant system inspection and leak detection.

• Electrical inspection, testing, and routine servicing.

• Routine servicing methodologies for HVAC and chiller systems.

Unit 4:

Chiller Troubleshooting and Fault Diagnosis:

• Common chiller operating faults and symptoms.

• Refrigeration system troubleshooting techniques.

• Mechanical and electrical fault diagnosis.

• Performance monitoring and operational checks.

• Corrective maintenance and fault recovery procedures.

Unit 5:

Safe Operation and Practical Chiller Maintenance:

• Safety procedures for HVAC and refrigeration systems.

• Safe handling of refrigerants, tools, and equipment.

• Startup, shutdown, and operational verification procedures.

• Chiller performance evaluation and maintenance documentation.

• Practical hands on maintenance, servicing, and troubleshooting exercises.