TROUBLE SHOOTING AND MAINTENANCE OF AIR-CONDITION AND REFRIGERATION SYSTEM

Course Content (3 days)
1. Introduction to Air Conditioning and Refrigeration
* Refrigeration
* Heat Transfer
* Phase Changes
* Condensation and Expansion
* Refrigerant Tables
2. Vapor Compression Cycle Designs and Refrigerants
* Evaporator Operation
* Reciprocating Compressor Operation
* Centrifugal Compressor Operation
* Condenser Operation
* Metering Devices
3. Test and Maintenance Equipment
* Temperature Sensors
Pressure Gauges
* Gauge Manifold
* Leak Detecting Procedures
* Using Leak Detectors
* Vacuum Pumps and Vacuum Gauges
4. System Operation Checks
* General System Checks /Inspections
* Checking the Refrigerant Charge - Removing Oil
* Testing Oil and Adding Oil
* Compressor Motor
* System Start-Up
5. Pump Down, Evacuation, and Charging
* System Pump Down
* System Evacuation
* High-Side Charging
* Low-Side Charging
* Determining Proper Charge
6. Mechanical Troubleshooting
* Mechanical Troubleshooting
* General Troubleshooting Approach
* Short-Cycling
* Restrictions in the Liquid Line
* Insufficient Cooling
* Condenser Operation
* Heat Transfer
* Filter Drier
7. Electrical Control Circuits and Troubleshooting