The lack of fluorine in air conditioning will cause the air conditioning not to refrigerate or the refrigeration effect is poor. How often does the air conditioning add fluorine? How to judge whether the air conditioning needs to add fluorine? Is it a very comfortable thing to blow the air conditioning in the office in summer? If not, it will easily affect the refrigeration effect of the air conditioning, so we should pay attention to it.
How often does the air conditioner add fluorine
1. In order to ensure the smooth cooling of air conditioning, many people think that it is necessary to add fluorine to air conditioning every year. In fact, this view is wrong. In general, only air conditioning in use more than 5 years before need to add Freon.
2. If the air conditioner has not been used for more than 5 years, freon is also needed in the following situations: in summer, if the low-pressure pipe at the connection point of the external unit of the air conditioner does not condense or cool, the fan exhaust is not hot, the return air pressure is less than 0.4 MPa, the high-pressure pipe is frosted, but the internal unit is frozen and fogging, etc., freon is needed in the first place. If it is in winter, the rough pipe at the interface of the air conditioner is not hot, and fluorine is also needed.
3. In addition, when the air conditioner leaks or moves for many times, freon consumption is too much, which is also the time to add fluorine to the air conditioner. In addition, when the air conditioner is shut down suddenly ten minutes after it is turned on, it is also possible that Freon is insufficient, so it is necessary to add fluorine.
How often does the air conditioner add fluorine
The above describes how often the air conditioner adds fluorine. Let's see how to judge whether the air conditioner needs to add fluorine.
1. Look: after starting for more than ten minutes, open the indoor unit panel, and it should be seen that the evaporator (the part on which the copper tube is full of aluminum sheets for heat exchange) is evenly covered with condensed water (like dew), which is normal (when the air humidity is high, it is more, otherwise it is less). If half of them do not, it may be lack of fluorine, such as local frost or ice is not normal.
2. Test: after the air conditioner is normally turned on for a period of time, the air blowing on the body feels very cool and can reach the set temperature quickly. The outdoor compressor can be turned on and off for a while like the refrigerator, which can be said to be normal.
3. Inspection: users who have used for more than half a year can check whether there are obvious signs of oil leakage at the pipe joint of indoor unit and the valve of outdoor unit. If there is obvious oil leakage, it indicates that the machine has leakage, because the oil fluorine is mutually soluble, the leakage will leak fluorine, and the leakage will leak fluorine.
4. Measurement: use a thermometer to measure the temperature difference between the air inlet and the air outlet of the indoor unit. It is normal if the difference is more than 8 ℃. The larger the temperature difference, the better the working condition of the air conditioner is. The better one can reach about 15 ℃.
5. Touch: if the outdoor unit can be touched by human hands, it can be touched by hand ten minutes after starting. The outdoor unit has two copper valves, one is connected with the thick copper pipe and the other is connected with the thin copper pipe. There should be a temperature difference between the two valves by hand; the temperature of the coarse valve should be lower than that of the fine valve, and it is normal to feel the cold valve (there should also be condensate when the temperature is high), and then touch whether the hot air of the outdoor unit is hot. If it is not hot, it may be lack of fluorine.