The number of large central air -conditioning fluoride is generally more, and there are more varieties of refrigerant. For specific additions, you can generally add the number of nameplates. You must grasp the number of quantities, not more or less.
1. How to judge whether the central air conditioner needs to add fluoride?
1. After booting for more than ten minutes, open the indoor panel, you should see that the evaporator is evenly covered with condensate (like dew), which is normal (when the air humidity is large, and less). If half of it is not, it may be fluoride, such as local frost or freezing. The tracheal valve is dry. Touch without obvious coolness with your hands. The reason is that the refrigerant in the evaporator is reduced, which reduces the boiling point of the evaporator, which increases the heat of the refrigerant of the valve and the temperature of the valve increases.
2. Use the temperature meter to measure the temperature difference between the indoor machine and the air outlet. The difference is above 8 ° C. The larger the temperature difference indicates that the better the working situation of the air conditioner, the good can reach about 15 ° C. The wind that the air conditioner was opened for a period of time was very cold, and it was able to reach the set temperature quickly. The outdoor compressor could open for a while like a refrigerator for a while, which can be said to be normal.
3. If the outdoor unit can touch it, you can touch it with your hands for ten minutes. The outdoor machine has two copper valves, one connects the coarse copper tube and the other is a fine copper tube. Touch the two valves with your hands to have a temperature difference; the thickness should be lower than the fine temperature, and it is normal to touch it (when the temperature is high), it should be hot air in the outdoor machine. Big hot may lack fluoride. Users who have used more than half a year can check whether there are obvious signs of oil leakage at the pipeline joints and outdoor machine valves of the indoor machine. Fluorofluoro is oil leakage.
4, the liquid tube valve is frost. The reason is that the fluorine is dehydrated, which causes the pressure in the liquid tube to decrease and the boiling point decreases, making the valve temperature lower than the freezing point. Open the indoor panel and remove the filter, you can find that the evaporator can only be frost. This is the result of insufficient refrigerant and the corresponding reduction in the cooling area.
Second, central air -conditioning plus fluoride steps
1. The newly installed central air conditioner should be vacuum before adding fluoride. According to the size of the system, use two 8 -liter vacuum pump for 24 hours. If the system is large, add another of the vacuum pump. Until the vacuum is drawn around 40, the vacuum meets the requirements.
2. Add the refrigerant from the high -pressure end. This is also called static fluoride. Until you can’t add it, slowly add from the low -pressure end after booting. Repeat this, you can’t join all the time, because when the cooling is added, there is no gasification, the pressure is inaccurate, and sometimes it cannot be seen. When you add it, you can see that the pressure is enough, but when it is really refrigerated, the pressure is relatively high. too much.
Third, central air -conditioning fluoride supplementation method
1. After a few years of use, the central air conditioner found that the refrigeration effect was not good before, and it was found that the pressure was not enough. It was necessary to add a certain amount of refrigerant to achieve the due refrigeration effect.
2. When replenishing, add slowly from the low -pressure end while running. You can add it according to the actual situation of the pressure. Water temperature.
3. The large central air conditioner must grasp one degree. If there is not enough experience, add one more barrel of two barrels, and the pressure and current generally will not change much, because the large central air conditioner storage system is relatively large, even if you add 10 more than 10 barrels 8 barrels of pressure have not changed much.
4. What are the precautions for air conditioning fluoride?
1. Open the air conditioner
In the summer, the air conditioner can be directly operated in the form of refrigeration. Due to the failure to perform fluoride in the heating conditions, when fluoride is added in winter, the method of reaching the heat -to -valve wire should be used to force the air conditioner to enter the refrigeration status.
2. Connecting fluoride
After the air conditioner is launched normally, the fluoride adds fluoride equipment from the side of the low -pressure valve side of the outdoor unit. During this process, the air and dirt in the fluorine tube must be discharged.
3. Minding voltage and fluoride
In the summer, the low pressure pressure is investigated. When the ambient temperature is about 32 degrees Celsius, the pressure is controlled at about 0.45MP; the high pressure pressure during the winter survey is surveyed, and the pressure is controlled at about 1.7MP after stability.
4. Remove the fluorine plus equipment
Follow the fluorine -added device to tighten the outer confidential sealing of the outer lingering. If the equipment is dropped, it will form a lot of fluoron leakage.