This lesson is designed so that that no prior knowledge is required.
This lesson covers the principles of Air Conditioning and Refrigeration. This course focuses on the factors involved in the refrigeration process, including methods of heat transfer, how substances change phase, and the relationship between pressure and temperature. It also shows the basic components of a refrigeration system and explains their functions.
This lesson is designed for participants who are familiar with the principles of refrigeration theory.
This lesson covers vapor compression equipment components. This course focuses on various equipment designs typically used in air conditioning and refrigeration systems. It shows variations in the design of system components including the evaporator, compressor, condenser, and the metering device.
This lesson is designed for participants who are familiar with the principles of refrigeration theory, the basic operation of air conditioning and refrigeration systems, the proper use of hand tools, and good safety practices.
This lesson covers test and maintenance equipment. This course shows and explains the use of equipment such as temperature sensors, pressure gauges, gauge manifolds, leak detectors, vacuum pumps, and vacuum gauges. It also includes guidelines for the care of each type of equipment.
This lesson is designed for participants who are familiar with the principles of refrigeration theory, the basic operation of air conditioning and refrigeration systems, the use of the appropriate tools and test instruments, the use of the liquid sub-cooling and superheat methods of checking a charge, and the safety practices that should be followed when working on air conditioning and refrigeration systems.
This lesson covers common maintenance procedures performed on air conditioning and refrigeration systems. This program shows and explains the basic steps in a general system check. It also covers common periodic maintenance procedures, including checking for refrigerant leakage, checking for correct refrigerant charge, and checking the oil level in a compressor.
This lesson is designed for participants who are familiar with the principles of refrigeration theory, the basic operation of air conditioning and refrigeration systems, the use of the appropriate tools and test instruments, and the safety practices that should be followed when working on air conditioning and refrigeration systems.
This lesson covers system pump down, evacuation, and charging. This course shows and explains the basic steps involved in pumping a system down, performing a deep vacuum system evacuation, a triple evacuation, high-side charging, and low-side charging. This course also covers basic principles and applications of each of these procedures.
This lesson is designed for participants who are familiar with the principles of refrigeration, the function and operation of each component in a refrigeration system, good safety practices, and the tools and equipment used during troubleshooting.
This lesson covers mechanical troubleshooting as applied to a variety of problems. This course focuses on how to troubleshoot short cycling of the compressor, restrictions in the liquid lines and installed accessory devices, insufficient cooling of the refrigeration system, and improper heat transfer. It also shows how to repair a clogged filter drier.
This lesson is designed for participants who are familiar with the principles of refrigeration, the function and operation of each component in a refrigeration system, good safety practices, and the tools and equipment used during troubleshooting and maintaining a chiller.
This lesson covers the basic operation of a boiler-based heating system and the components contained in these systems. This course focuses on troubleshooting the burner, heat exchanger, pumps, relief valves, and the expansion tank.
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