1: If there is no freon, the general conditions allow you to weigh it, 1.5 pieces of about 1.2 kg is enough, which is called quantitative fluoridation;
2: The commonly used method, measuring the working current with an ammeter, which is the most accurate, the measured current is as good as the rated comparison with the external machine nameplate. When the air conditioning is used for a long time, whether cooling or heating, the effect will be greatly reduced. At this time, by adding fluorine to the air conditioner, the effect of cooling and heating the air conditioner can be improved again. Fluoride is generally added twice a year in every family, but the amount added will also have a certain impact on the effect of air conditioning, for example, adding too much will make the air conditioner leak fluorine, and if too little, it will not work.
Therefore, the first fluoridation depends on the low pressure, and the normal fluoridation pressure of general household air conditioners is as follows: R22 refrigerant is about 0.45MPa, and R410a refrigerant is about 0.9MPa.
In addition, before looking at the manometer, the best means is to take a little at a time, slowly fill up the method, pay attention to the value change of voltage and current.
The specific amount of refrigerant that 1.5 pieces of r410a frequency conversion air conditioning needs to add is related to a variety of factors, and can not simply give a specific value. However, under normal circumstances, the refrigerant charge amount is about 1.5-1.8% of the air conditioning indoor unit.
In addition, refrigerant injection needs to be flexibly adjusted according to the use of air conditioners, ambient temperature, and the distance between outdoor and indoor units.
Therefore, if the exact refrigerant charge amount is required, it is recommended to consult a professional air conditioning maintenance personnel.
In general, 1.5 pieces of r410a frequency conversion air conditioning needs to add about 1.2-1.4kg of refrigerant. However, it is also necessary to consider the type of air conditioner, pipe length, ambient temperature and other factors, and it is best to carry out specific detection and operation by professional air conditioning maintenance personnel.
About 1.2 kg
Generally speaking, the refrigerant of 1.5 units of air conditioning R410a needs about 1.2 kilograms, because it is not accurate to judge whether freon is purchased by looking at the pressure, because the temperature difference between the four seasons is too large, the pressure will also fluctuate with the temperature.
2. When the air conditioner of r410a refrigerant is running, the low pressure is about 0.8Mpa, and the high pressure is about 2.2~2.4Mpa. Too low or too high pressure will lead to abnormal system.
1.5 is a small air conditioner, summer low pressure in 0.4 to 0.5... The general operating low pressure is 4.5-5 kg, and the high pressure is 15 kg. ...
It's usually up to five pressures