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Hands-on Air Conditioning Maintenance & Troubleshooting

This course is designed for HVAC technicians looking to gain an in-depth hands-on understanding of how to find and repair system problems safely.

Description

Students in this course will be able to charge, evacuate, and troubleshoot an actual AC system as they would in the field. Proper maintenance and troubleshooting scenarios of multiple systems will be discussed to give the attendee the best understanding possible. Learning to use the proper tools is very important and service equipment such as vacuum pumps, manifold gauges, charging scales, multimeters, and more will be used in the hands-on applications. Learn from the experts on how to troubleshoot and repair an air conditioning system in the fastest and most efficient way possible.

It is recommended that this course be taken only after completion of the Understanding Air Conditioning & Refrigeration course.

Course Outline

Day One — Discussion Topics

Refrigeration Cycle

  • Typical System
  • Main Components
  • Refrigerant in Action

System Component Maintenance

  • Evaporator
  • Condenser
  • Compressor
  • Metering Device

Safety Concerns

  • Proper PPE
  • Proper Handling of Refrigerants
  • Electrical Safety
  • PV Certifications
  • EPA

Electrical Troubleshooting

  • Voltage Checks
  • Current Checks
  • Checking and Replacing Fuses
  • Troubleshooting Compressor
  • Proper Motor Winding Checks

Tools and Equipment

  • Manifold Gauges
  • Vacuum Pump
  • Refrigerant Scales
  • Refrigerant Recovery Machine
  • Multimeter
  • Clamp-on Amp Meter

Day Two — Discussion Topics

Refrigerants

  • Types
  • Applications
  • Pressures
  • Replacement Refrigerants

Hands-on Troubleshooting the System

  • Measuring Superheat
  • Measuring Sub-cooling
  • Effects of Overcharge
  • Effects of Undercharge
  • Importance of Proper Airflow
  • Troubleshooting Scenarios
  • Electrical Troubleshooting

Hands-on Refrigerant System Applications

  • Proper Use of Manifold Gauges
  • Evacuation of the System
  • “Pump Down”
  • Nitrogen Pressure Testing
  • Refrigerant Recovery
  • Leak Detection
  • Proper Charging of the System

Planned Maintenance Schedule

  • What to Check
  • How Often

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