Haier BD-478A Freezer noise sources, Compressor, Maintenance Service And Trouble Shooting

(3) Filling

①Determine the filling quantity first according to the freezer being repaired. (Each small mark of the liquid tube is 25g, each big mark is 100g).

②Open all related valves.

③When the liquid level has reached filling quantity, close valves.

(4) Test run

①After filling, turn on power to freezer for test run. Observe the unit operation.

②Switch off power.

12.6 Freezer noise

12.6.1 Freezer noise sources

Freezer noise comes from the expanding with heat and contracting with cold of compressor, evaporator or condenser; from the contacting or resonance of pipes; from the flowing of refrigerant; or from the vibration of freezer because the floor is not level, etc.

MAINTENANCE SERVICE AND TROUBLE SHOOTING

Maintenance Service and Trouble Shooting

12.6.2 Compressor

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