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Display Cases Compressor Operation No Cooling Fault (2)
author: supermarket refrigerated showcase category: walk-in display coolers Views: 473Time: 2016-08-22
display cases Compressor Operation No Cooling Fault (II)
1 None The gas is discharged, indicating that there is no refrigerant in the display cases refrigeration system, that is, the refrigeration system has a severe leakage point, directly pressing 1.2 MPa, pressing the anti-dewing pipe, deposited for several times (generally no more than 24 hours). If the pressure gauge drops below L.LMPa, it is necessary to determine the anti-dew detection, unused, directly connect the condenser tube to the compressor exhaust pipe: If the pressure meter is still 1.2MPa after 24 hours, the pressure meter is still 1.2MPa, and then Press the other parts of the refrigeration pipe to check and make a replacement or replacement process.
2 have a large amount of gas discharge, to determine whether the compressor does not vent. After welding the compressor exhaust pipe, plug in the Display Case power to run the compressor, and use your thumb to keep the exhaust pipe port. If it is easy to block, it is proved that the compressor does not vent, it should be replaced or replaced. It is easy to compress the machine if it is easy to compare. After the refrigeration system is repaired, the system is blown, replacing the drying filter, evacuates, fill the refrigerant, and seals.
II, the compressor turn is not refrigerated, and the refrigeration line has oil stains: no cooling, the compressor is operating normally, and the exposed refrigeration pipeline has oil. Stain. Fault Analysis: 80% is a drain point in the oil stains, causing the refrigerant leak, a small number of other parts of leakage or compression without exhaust. Troubleshooting: Unplug the display cases power supply, open the compressor process tube, and observe the refrigerant discharge amount.
1 no gas or gas displacement is small, is less refrigerant in the system, indicating that the refrigeration system leaks, 0.8MPa of the total pressure or the high pressure pipeline High pressure 1.2MPa. Painting soap water into air bubbles after the oil stains, indicates that the leakage, remove nitrogen, and put the leakage point clean and rehabilitate: if there is no bubble, it should continue to press the routine until the leakage point And processed accordingly.
2 have a large amount of gas discharge, indicating that the refrigerant in the system is not lack of refrigerant, that is, there is no drain point, which is likely to be that the compressor does not exhaust or exhaust. Welded the compressor exhaust pipe port, unplug the Display Case
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