REFRIGERATION FUNDAMENTALS FOR HVACR TECHNICIANS /DVD

Description

REFRIGERATION FUNDAMENTALS
FOR
HVACR TECHNICIANS
In this 90-minute video presentation, well-known author and instructor Jim Johnson eliminates the mysteries behind the concepts of vapor compressor refrigeration systems. The program begins with a brief overview of thermodynamics, sensible and latent heat concepts, and the basic components of a refrigeration system before taking a nuts-and-bolts approach to understanding and servicing residential and light commercial equipment.
Using cutaways of components and refrigeration systems to demonstrate, Jim explains and shows how refrigeration systems applied to comfort cooling systems, as well as those found in other systems such as walk-in coolers and freezers, reach-in's, and other applications.
The accompanying resource material CD includes an interactive resource guide, quiz questions, additional information on EPA refrigerant recovery certification, sample questions and an answer key for EPA certification and additional temperature/pressure charts.
Program Outline.....
Refrigeration Fundamentals Review
Heat Transfer & Thermodynamic Laws
Vapor Compression System Components
Compressors, Condensers &Evaporators
Metering Devices (Fixed Bore & Expansion Valves)
Refrigeration System Accessories
Accumulators, Receivers & Filter Driers
Control & Protection Switches, Solenoids
Sight Glasses, EPR and CPR Valves
Oil Separators, Crankcase Heaters & Mufflers
Accessing Refrigeration Systems
Safety & Proper Gauge Connection Procedures
Checking A System Charge
The Concept of Superheat & Subcooling
Refrigerant Leak Detection
Electronic Leak Detectors & Pinpointing Leaks
Types of Refrigerants & Their Applications
Refrigerants and Oil Compatibility
Evaluating & Troubleshooting A System
Proper Use of Recovery Equipment
System Repair Procedures
Installing Permanent Access Valves
Evacuating & Dehydrating A System
Charging A Refrigeration System
Charging By Weight
Adding Refrigerant To A System
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