National Instructional Media Institute (NIMI) creator DGT, MSDE, Govt of India text xxu Chennai National Instructional Media Institute 2013,c2008 monographic eng

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92 Contents : Practical -Prepare copper tube joints -Replace door liner gasket and align door assembly -Install the refrigerator with care -Service and clean the refrigerator with care -Service and clean the refrigerator -Service and clean the refrigerator Test electrical components in refrigerator -Remove and refix the refrigerator door -Dismantle the Hermetic compressor -Check and rectify the valve assemblies -Assemble ,weld dome and add oil to hermetic compressor -Recover CFC/HCFC from the refrigeration system Recover HFC from the refrigeration -Check electrical wiring of conventional refrigerator by RSIR method -Check electrical wiring of conventional refrigerator by CSIR method -Prepation for repairs and replacement of components -Troubleshoot & repair refrigerator for the symptom’No cooling ‘and sub – symptom ‘compressure does not start’ -Troubleshoot & repair refrigerator for the symptom’No cooling ‘and sub – symptom ‘Gas leak ‘ -Troubleshoot & repair refrigerator for the symptom’No cooling ‘and sub – symptom ‘Compressure running but not pumping refrigerant‘ -Troubleshoot & repair refrigerator for the symptom’No cooling ‘and sub – ‘Poor cooling’ and sub symptom ‘Moisture in the system’ Theory -history of refrigeration and cooper tube connections used in system -Heat and its measurements -Propertes of air and gases -Working principle of refrigeration components -Details of the components of refrigeration -Functions of electrical components in conventional refrigerator -Refrigerator door assembly -Method of lubrication of selected compressor -Details of compressor valves -Study of compressor -Refrigerants – History,classification & Properties -Environments impact and recovery of refrigerant -RSIR wiring -CSIR Circuit -Methods of leak testing and leak detectors use -Defects in conventional refrigerator -’No cooling ‘ - Gas leak -Defects in conventional refrigerator - ‘Filter drier choke “ -Defects in conventional refrigerator - ‘No cooling “-”ompressor running but not pumping of refrigerant “ -Defects in conventional refrigerator - ‘Poor Cooling“ - Moisture in the system Refrigeration & Air Conditioning : Centres of Excellence Refrigeration 621.58 BAS COE26 National Instructional Media Institute (NIMI) BSDU 170701 20190503161212.0 English