Repair and maintenance of REFRIGERATOR and AC. Safety Precautions, study the function and working of refrigeration tools, Instruments & Equipment's. Study the construction and working of V.C. Cycle of refrigerator.Study the types of refrigerator. Faults and remedies of refrigerator. Care and maintenance of refrigerator. Servicing the refrigerator. Check the performance of refrigerator.Installation of Refrigerator.