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The reason for refrigeration affecting supermarket refrigerated showcase
author: supermarket refrigerated showcase category: commercial refrigeration Views: 519Time: 2016-08-22
The reason for refrigeration affecting supermarket refrigerated showcase
Insufficient filling of refrigerant is only seen in the refrigeration system being repaired or repaired. Feature: Dissatisfaction with evaporator frosting. Maintenance method: For models with the refrigeration system being repaired, continue to add refrigerant: For rework machines, the refrigeration system needs to be opened to bleed, and then the pressure should be checked for leaks, evacuated and filled with refrigerant. Overfilling of
refrigerant is also only seen in the refrigeration system being repaired or repaired. Too much refrigerant will also cause the cooling effect to decrease. Features: Frost or dew on the air return pipe. Repair method: For models with no seal in the refrigeration system, press the pressure gauge valve to discharge a small amount of refrigerant. For models that have been sealed, the refrigeration system needs to be opened to bleed, and then evacuated again and filled with refrigerant.
Insufficient fan air volume or non-operating cooling type supermarket refrigerated showcase Only one evaporator is installed in the freezer compartment, and the fan between the freezer compartment and the refrigerator compartment cools the refrigerator compartment. If the fan is not running or the number of fans is small, the temperature of the refrigerating room will remain high. The thermostat installed in the refrigerating room is always in the state of and without stopping. Features: The temperature of the compressor return pipe is low, sometimes condensation or even frost occurs, and the fan's running sound becomes weak or does not work. Repair method: check the fan motor, whether the manual fan blade is flexible, check the fan switch, and check whether the fan power supply is normal.
non-defrosting room cold supermarket refrigerated showcase The compressor's work is not only controlled by the thermostat, but also by the defrosting circuit. Features: The supermarket refrigerated showcase will be cooled normally within 2~3 days after plugging in the power. When the evaporator is frosted to a certain extent, the supermarket refrigerated showcase will no longer be cooled, and the frost on the evaporator will gradually melt away. When all the frosts are defrosted, normal cooling will resume , Repeat the above process later. Maintenance method: check the defrosting device.
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