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    Note! Seven mistakes in the maintenance of refrigeration equipment

    Note! Seven mistakes in the maintenance of refrigeration equipment Many refrigeration maintenance masters, seeing the internal leakage of the refrigerator, will directly add the condenser net without pressure, and it will not leak again for a long time. It turns out that it is the evaporator of the refrigerator compartment. It is not to say that it is no problem to switch the compressor to some kind of compressor. When the system leaks, the compressor runs the same. However, the compressor is cut out after the pipeline is cut, and the compressor is out of gas. When the user leaves, notify the user again. That would be unclear! The freezer system is never leaking or blocking. A large amount of Freon is sprayed from the filter and capillary, which is blocked, and there is no gas, then it is an unconventional compression test! Misunderstanding 1. If only one compressor is used, then follow the welding It’s not that the system is filled with refrigerant, and some kind of safety is done during welding. Some compressors have “remains" of freon. Sometimes, when the welding compressor takes over, there will be expanded gas ejected. The part must not be close to the nozzle. Misunderstanding 2: If the compressor is changed to a certain size, it is better that the refrigerator repair requirements are stricter than that of the air conditioner, and the matching between the compressor and the system must be reasonable. If the compressor is replaced, the compressor will generate heat, and the compressor life will never be very long. Similarly, if the compressor is replaced, the cooling effect will be poor, and the evaporator will not frost. Misunderstanding 3: Any kind of liquid ejected by the compressor is moisture. The compressor oil will run out with the eruption. Some people will think that it is moisture, but this is not a certain kind. How to distinguish between oil and water? ? Use a welding torch to burn it, there is a lamenting sound, it must contain water in the oil, be alert to the occurrence of ice blockage. Myth #4: Aluminum tubes cannot be welded. Why do people say that aluminum tubes cannot be welded? Because aluminum electrodes are very expensive, I never want to buy them. Refrigeration maintenance is based on welding technology. It is no problem if the fire is in place. The beginners are not enough. The old man is worried about burning through the copper pipe. It is concluded that the welded weld is like goose bumps, especially for the air conditioner compressor. You can see this phenomenon on the wall. These tubes are often thick and need to be hot! Misunderstanding 5. Fluorine will never refuel Many people have been engaged in refrigeration maintenance for several years and have never refueled or changed the compressor! Change the compressor again until the compressor whines. Oil is more valuable than Freon, but oil is cheaper than compressors! After the refrigeration equipment leaks from the system, the compressor oil is sprayed out. After repairing the system leakage, add the compressor or change the oil appropriately. If you turn on the compressor and dry the air or dry black dust when you cover it with your hand at the high-pressure pipe mouth, then be alert that the compressor is out of oil. Even if there is a little oil in the compressor, he will turn it. Until there is no oil, the stuck cylinder cannot be repaired! Misunderstanding 6. Frequently fluorinated refrigerant is a kind of thing that not only does not evaporate nor consume. Many maintenance workers see refrigeration equipment and fluorinate it without cooling. This is undesirable. The problem should be determined first and repaired again. . Misunderstanding 7. The freezer coil copper tube is higher than the iron tube. Good copper tube is used for refrigeration equipment. It is indeed corrosion-resistant and the tube wall is thick enough. That tube is okay for a lifetime, but after many tests, the freezer coil iron tube The frost is more obvious than the coiled copper tube. This problem is that the copper tube has good heat dissipation performance. It is used on the evaporator, which is not good for heat preservation, so the frost on the copper tube does not seem to be iron management

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    06/14/2020

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    Central Air Conditioning Maintenance: Basic Procedure for Chiller Failure Treatment

    06/14/2020

    Central Air Conditioning Maintenance: Basic Procedure for Chiller Failure Treatment

    In order to ensure the safe, efficient and economical long-term normal operation of the chiller, it is very important to discover the hidden dangers of failures as early as possible during its use. Today, the editor of Service will give you an analysis o器2䀀ￜ皥䖒皦즠Ʋ嫜ི㲈Ʋ䌁皦ᮔDž༬皧嫦ིЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ

    The air conditioner power is 4500w, and the 4A power cord 32A is open, why is it always tripped

    06/14/2020

    The air conditioner power is 4500w, and the 4A power cord 32A is open, why is it always tripped

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    06/14/2020

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    An explosion in a building in Haikou caused 1 death and 10 injuries. The initial judgment was that the central air conditioner was leaking According to the news released by Haikou, after an on-site investigation by experts, it was preliminarily judged th器2䀀ￜ皥䖒皦즠Ʋ嫜ི㲈Ʋ䌁皦ᮔDž༬皧嫦ིЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱

    What is the working principle of the cooling plate Introduction to the working principle of the cooling plate【Detailed explanation】

    06/14/2020

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