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Q6. (a) Sketch and describe the operation of the domestic refrigeration system of a ship using freon 22 gas as refrigerant. (8)

(b) Describe the causes for the following in the domestic refrigeration system. (8)

(i) Frequent cut-in and cut-out of the compressor

(ii) Compressor running hot

(iii) High pressure cut out of the compressor

(iv) Frosting in the compressor suction side.