How often is it normal to add refrigerant to the car? How to distinguish the lack of refrigerant in the car air conditioner?

If the air conditioner doesn’t cool off in summer, it will be annoying for car owners and friends. Of course, there are many reasons for this phenomenon. But the most common reason is probably the lack of refrigerant. So how often should our friends who use cars add refrigerant to it? How do we usually judge. The following editor will tell you about it.

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 work like a refrigerator for a while and stop for a while, which indicates that it is normal of. Otherwise, refrigerant may be needed.

Use a thermometer to measure the temperature difference between the inlet and outlet of the indoor unit. The temperature difference is above 8℃. The larger the normal temperature difference, the better the working condition of the air conditioner, which can reach about 15℃. If the difference is less than 8°C, refrigerant may need to be added. After turning on the indoor unit for more than ten minutes, 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 condensed water. This is when the normal air humidity is high, and vice versa. If half and half do not, there may be a lack of refrigerant. Such as partial frost or ice formation is also abnormal. Users who have used it 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, it indicates that the machine is leaking because of the mutual miscibility of oil and fluorine. The oil leakage will cause fluorine leakage and the fluorine leakage will cause oil leakage. When the air conditioner continues to operate normally, there are continuous bubbles in the glass holes, indicating that the amount of fluorine is insufficient and needs to be added. When the air conditioner is running normally and continuously, there are no bubbles in the glass holes, and when the air conditioner is stopped, no short-term bubbles appear, indicating that the amount of fluorine is too large and needs to be discharged. When the air conditioner is running normally and continuously, there are no bubbles in the glass holes. When the air conditioner is stopped, short bubbles will appear, indicating that the amount of fluorine is normal.

If the car owner does not find this glass observation hole, there is a simple way to roughly judge: open the car hood and check whether there are oil stains on the air conditioning system connector, if there is, it should be Lack of fluoride. Before adding fluoride to the car air conditioner, it is necessary to do an overall inspection of the vehicle's air conditioning system to ensure that the air conditioning equipment has no leaks before adding fluoride.

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