· Basic Electronics - Electricity concepts , Active and Passive Electronic components working and troubleshooting

· Electricity - Single phase , 3 phase concepts , current , voltage and power rating concepts , HP , KW and Current Unit calculations

· Electrical control panel , valves , pressure gauge , circuit breaker , isolator , fuse and switcher , electrical and electronics meters

· Introduction Refrigeration systems , their usage

· Introduction to Refrigeration cycle , Identification of Refrigeration cycle and components , high medium and low temperature application machine , Refrigeration piping concepts , identification of tubes , pipes , joints , lubricant , refrigerant gas cylinder and its use

· Differents elements of a refrigerator - Compressor , condensor , evaporator , Expansion valve , Refrigerant and other related elements

· Function of Condenser , types of condensors and working concepts

· Function of Compressor , Working concepts and types

· Function of Evaporator , working concepts and types

· Thermal insulation and types.

· Working with electrical , electronic and pneumatic controls

· Motors used in refrigeration types, construction

· Refrigerator types - Single Door , Multidoor ,Side by side , Bottom freezer type , Digital inverter technology based refrigerators

· Refrigerator Servicing , Troubleshooting and Maintenance - Handling gas cylinders , repair of leaky cylinder , to charge the refrigeration oil and re move oil , Testing evaporator coils for leak , choke & repairing and cleaning of fins , testing condenser coils for leak , choke and repairing , Electrical Wiring of airconditoner and refrigerator systems - compress motor with relays , controls , lights ,faults and remedies system , Refrigerator mechanical and electrical faults and their remedies