RA4Air Conditioning Training Unit Didactic Equipment Vocational Education Equipment Refrigeration Training Equipment
DESCRIPTION The RA4 is designed to enable the student to gain an understanding of the fundamental components and operation of a refrigeration/ air conditioning system. It is self contained and powered by a domestic 13amp supply. The control panel comprises standard refrigeration gauges as used by a service technician. There are also indicators to show the status of the low-pressure, medium-pressure and high-pressure system safety switches. Indicators show the compressor running status. Many of the components used are automotive but the process is the same in vehicle, building services and refrigeration units. A DC compressor has been selected to provide drive (due to its low voltage) low-noise operation against an automotive-style belt-driven compressor typical of high-current AC motors. Theprinciples shown relate to any formof heat exchanger that may use vapour-compression refrigerant within its process. EXPERIMENTAL CONTENT Demonstration of component function Instrumented running conditions showing refrigeration pressures Performance under running and fault conditions Fault training through interchangeable fault condition switches
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