A complete guide to self-checking for refrigerator refrigerant leaks

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Refrigerators and freezers, as the Guardians of the Cold Storage in modern families, play an important role in daily life. However, the potential danger of refrigerant leaks, like a hidden killer, silently erodes their cooling performance. Once the refrigerant leaks, food spoilage, soaring energy consumption, safety hazards and other issues will follow. To master the scientific self-inspection method and find and solve the problem of refrigerant leakage in time is not only the careful care of household appliances, but also the solid protection of family life quality and safety.

1.Observe the state of food

The state change of food is the most intuitive basis to judge the refrigeration effect of refrigerators and freezers. In a refrigerator, the normal temperature of the refrigerator room should be kept at 2-8 °C. if water droplets are found on the surface of eggs, green leafy vegetables are quickly wilted and yellowed, and fruit skins are wrinkled, this indicates that the refrigerator room temperature is too high, the cooling effect is poor. The freezer temperature usually needs to be maintained below -18 °C, if the frozen meat surface frosting is uneven, soft ice cream melts, that the refrigeration capacity of the freezer decreased. The same is true for freezers, where sticking of quick-frozen foods and the melting and refreezing of ice crystals on the surface of frozen goods means there may be problems with the refrigeration system. These abnormal changes in food, in fact, refrigerant leakage caused by the system pressure imbalance, a direct reflection of the lack of refrigeration capacity.

2.Check for external physical signs

As the refrigerant circulates through the refrigeration system, it carries a certain amount of refrigeration oil, which is Inseparable. When the refrigerant leaks, the refrigerant oil will also seep out, leaving a clear oil stain around the leak point. In the refrigerator, carefully inspect the bottom of the compressor, the surface of the condenser, and the connection of the pipes. If you find tan or black oil stains that appear repeatedly after wiping with a clean cotton cloth, this is probably a sign of a refrigerant leak. Oil stains are more common on bent copper pipes, on the edges of door seals, and near evaporators. Because of the relative simplicity of the refrigeration system, the distribution of oil stains may be more concentrated. By observing these parts of the oil stains, you can judge whether the refrigerant leakage and leakage of the approximate location.

3.Listen for unusual sounds

When refrigerators and freezers are running normally, the compressors are running rhythmically and there is a slight but uniform hiss of refrigerant flowing through the ducts. However, once there is a sustained and abnormal hissing leakage sound, especially after the compressor is stopped, it is very likely that the refrigerant is leaking from the pipe crack. Not only that, refrigerant leakage causes abnormal pressure in the system, but also causes the vibration of the pipeline, which in turn produces a buzzing or gurgling noise. These unusual noises are by no means trivial. They are an emergency alarm issued by the refrigeration system, reminding us that we must attach great importance to timely check whether the refrigerant is leaking to avoid causing more serious damage.

4.Touch the temperature of the pipe

For a more accurate detection of a refrigerant leak, carefully touch the temperature of the refrigerator and freezer pipes. When the refrigeration system is normal, the high-pressure tube from the compressor outlet to the condenser, the temperature is high, and the touch has obvious heat sensation; the low-pressure tube from the evaporator to the compressor, the temperature is low, close to or below room temperature. If the high-pressure tube temperature drop, and low-pressure tube temperature is about the same, or low-pressure tube frosting uneven, local overheating, this is not a normal phenomenon. This clearly shows that the refrigerant cycle problems, is most likely to leak caused by insufficient refrigerant, system pressure imbalance, must be immediately a comprehensive investigation and repair the leak, to avoid affecting the cooling effect.

5.Check with soap and water

Soap water detection is a convenient and effective method for refrigerant leakage detection. To operate, mix the soapy water into a solution of suitable concentration, then with the help of a brush or a watering can, evenly brush or spray it on the suspected leakage area, such as the connection position of the pipe, the valve, etc. . When you're done, open the refrigerator or freezer and look over the area. If a continuous bubble is observed, this indicates a refrigerant leak at the site. This method is simple and does not require complex equipment, and can help to quickly locate the problem.

Conclusion

Refrigerators and freezers are indispensable electrical equipment in modern families, and their normal operation is essential to our lives. By mastering the above self-test method of refrigerant leakage, we can find out the problems of household appliances in time in our daily life and take corresponding measures to repair them. Regular self-inspection of refrigerators and freezers can not only extend the service life of household appliances, reduce maintenance costs, but also ensure the freshness and safety of food, and bring more convenience to our lives.