How to judge the lack of refrigerant in car air conditioners, and how often do you add it?

Spring is strong, summer is approaching, and the weather is getting warmer. The frequency of use of car air conditioners has gradually increased, so the reason why car air conditioners can bring coolness is mainly because there is a thing called car air conditioner refrigerant. First of all, we need to know what this refrigerant is? The so-called car air-conditioning refrigerant is usually called Freon, which is also called 'refrigerant' or 'refrigerant' in the market. It is divided into environmental protection (R134a) and non-environmental protection (mainly F12).

Under normal circumstances, the car does not need to add refrigerant for 3-5 years, but sometimes the cooling effect of the refrigerant is not good, and it needs to be added. How to judge by yourself whether the air conditioning refrigerant is needed Add to?

Method 1: After the air conditioner is normally turned on for a period of time, the wind blowing on the body feels very cold and can quickly reach the set temperature. The outdoor compressor can be like a refrigerator. Work for a while and stop for a while, which shows that it is normal, otherwise there may be a need for refrigerant.

Method 2: Use a thermometer to measure the temperature difference between the inlet and outlet of the indoor unit. If the difference is above 8℃, the larger the normal temperature difference, the better the working condition of the air conditioner. It can reach about 15℃, and the difference below 8℃ may need to add refrigerant.

Method 3: Turn on the panel of the indoor unit more than ten minutes after booting, you should see that the copper tube of the evaporator is covered with aluminum fins for heat exchange and the parts are evenly covered with condensation Water is more normal when the air humidity is high, and vice versa. If half of the air is absent, it may be lack of refrigerant. Such as partial frost or ice formation is also abnormal.

Method 4: Users who have used for more than half a year can check whether there are obvious signs of oil leakage at the pipe joints of the indoor unit and the valve of the outdoor unit, if there is obvious oil leakage Phenomenon indicates that the machine is leaking, because the oil and fluorine are mutually soluble, the leakage of oil will cause fluorine, and the leakage of fluorine will cause oil.

The air conditioner is indispensable for driving in summer. It may be annoying if it fails in summer. For the sake of your own coolness and the longevity of your car, please Check the maintenance in advance.

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