How to distinguish between true and false refrigerants? What is a counterfeit product?

The current refrigeration market is chaotic. Regardless of whether you are repairing it or using it yourself, try to buy one-off packaging from major manufacturers. The bulk is usually drawn out with the machine head, and there are impurities in it. If you are a trader, Zhejiang goods are good, 3-5 cents per kilogram more expensive than ordinary manufacturers. quality assurance. Then, if you really encounter fake and inferior refrigerants, how to distinguish it?

1. Before purchasing, before purchasing, if you are looking for a business online, you must check the following points.

1. Inquiry from the industry and commerce and taxation departments

2. Whether the website is filed

3. For purchasing, DuPont and other brand products, you must check the agency certificate

4. Are the company and product addresses clear

5. Visit the company for more information

2. Procured but not used

1. Turn the refrigerant tank upside down and release a small amount of refrigerant onto a piece of white paper. If there are obvious impurities or liquid water on the white paper, it means that the refrigerant is of poor quality and is not recommended.

2. Connect the pressure gauge to test the pressure of the refrigerant bottle, and check whether the pressure in the bottle is within the normal range by comparing it with the refrigerant temperature and pressure characteristic table. If the pressure is obviously abnormal, it is not recommended. And when the refrigerant is half used, the pressure in the bottle can be tested again. For refrigerant R22, a single-component refrigerant, the two measured bottle pressure values u200bu200bshould be very close, but for inferior refrigerants, multiple components are usually mixed. , After the refrigerant in the bottle is used, due to the change of the composition ratio, the bottle pressure usually has a big difference. If such a phenomenon is encountered, it is recommended to stop the refrigerant immediately and discharge the refrigerant that has been charged into the system. To avoid polluting the system.

3. Already used

In the automotive aftermarket, the capacity is insufficient, the purity is not enough, R12 is used to pretend to be and the price is mostly more than ten yuan Counterfeit R134a can be seen everywhere. This will cause the following failures in the automotive air conditioning system:

1. The compressor is locked, the valve is interrupted, and the oil is degraded and has a peculiar smell.

2. Wax-like emulsions accumulate in the expansion valve to the evaporator inlet and even the dryer, which blocks the refrigeration circuit. It is quite difficult to remove these accumulations.

3. The sealing material at the compressor is deformed, causing the refrigerant to leak slightly.

4. After running for a period of time, the cooling effect of the system is significantly reduced.

5. The condenser and refrigeration pipeline burst.

In addition to the above methods to distinguish the advantages and disadvantages of refrigerant products, the editor also tells everyone that the purity of the refrigerant will also affect the efficiency of its operation in the refrigeration system. Refrigerant products with purity up to the standard can provide resistance to the safe operation of the refrigeration system, while those with a purity that are not up to the standard will only cause the refrigeration system to be injured. According to the manufacturer's understanding, according to the international standard, the purity of the air-conditioning refrigerant is more than 98% as qualified, and the national standard of my country is more than 96%. Taking DuPont or Lixue refrigerant R22 as an example, the purity of its superior grade is as high as 99.9%, so the purchaser can use it with confidence.

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