Ref Manual Servicing Technicians Unit 4 (Servicing Practices)
Technicians have the important role of making the operation of RAC systems the most energy efficient and decreasing refrigerant emissions. This can only be achieved by the adoption of good practices. The section starts with the evaluation of the problems due to the presence of moisture and contaminants in the system, and how to avoid them through purging and evacuation, charging, and leak testing. The important measurement instruments and tools necessary to achieve good servicing practices are included. A technician should be should be able to achieve the following servicing operations: • Leak detection, purging and evacuation. • Charging refrigerants. • Identifying the servicing-specific tubing tools and techniques of sizing, un-rolling, cutting, bending, flaring, swaging, piercing, pinching and welding. • Identifying the proper use of ser...