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refrigerated showcase display cooler explain the reasons why the display cooler is not cooling
refrigerated showcase display cooler explain the reasons why the display cooler is not cooling
There are many reasons why the display cooler is not cooling. The homepage should briefly understand the working principle of the display cooler and the cooling method.
Failure phenomenon: The display cooler type digital frequency conversion electric does not cool.
failure analysis: the site is powered on, the display cooler has power display, and the compressor is running. The display cooler works normally but does not refrigerate. Determine the cause of this failure based on experience. It is a refrigerant leak. After a comprehensive inspection, it was found that the capillary tube had blisters, which caused the refrigerant to leak light and cause no cooling.
Obstacle maintenance: clean the broken part of the trachoma, and use a section of copper tube with a length of about 35mm and an inner diameter of about 0. Sm larger than the outer diameter of the capillary tube to sleeve with the capillary tube. When connecting, use a vise to bias the two ports of the casing, so that the outer copper tube is tightly pressed against the outer diameter of the capillary tube, the flame welding is adjusted, and the fault is eliminated by normal operation.
Fault phenomenon: display cooler The digital inverter refrigerator is not cooling, and the fluorescent display shows the fault code.
failure analysis: power on and test the machine on site, the compressor is running well, and the filter is cold by hand. It is preliminarily judged that the cause of the failure is that the filter is clogged.
Troubleshooting: When the refrigerant is discharged and the capillary tube is disconnected at the outlet of the filter, it is obvious that a lot of oil is sprayed with the refrigerant, indicating that the pipeline is blocked. Start the compressor to discharge the oil with the refrigerant as much as possible, and block the outlet end of the filter with your thumb. When it can’t be blocked, release it. The air in the condenser is discharged with strong air pressure. Repeated several times, the oil in the condenser will be removed. Can be drained. After replacing the filter, the display cooler failure was eliminated after normal operation.
Fault phenomenon: The display cooler is working normally when the power is on on site, but it cannot be cooled.
Troubleshooting: When the display cooler works normally, add new refrigerant and power on to check the cooling effect. When I see it can be cooled. It is the fact that the refrigerant has not been added for a long time and the refrigerant has been consumed.
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