Methods and steps for heating and adding fluorine in air conditioner:
How to add fluorine in air conditioner in winter, so Zhao Yu will tell you first that the temperature is not very low, and the outdoor temperature is above zero, how can we add fluorine. When adding fluorine to the air conditioner, the air conditioner must be refrigerated and run. At the same time, the compressor is operated before adding fluorine. Because only when the air conditioner is refrigerated, the fluorine vent can be added at low pressure and can be sucked in. When heating, the fluorine vent is high pressure and the exhaust side, so there is no way to add fluorine. Another condition is that the compressor must be operated. Only when the compressor is operated can the pressure on the fluorine-added side of the air conditioner be lowered and fluorine can be added. In winter, the temperature outside and indoor temperatures are relatively low, so when we turn the air conditioner to refrigerate, the air conditioner does not turn, the compressor does not run, and there is no way to add fluorine. When the heating is started, the external compressor is running, but when heating, the four-way valve is turned on, and the fluoride port is in a high-pressure state, so fluoride cannot be added. Therefore, we must take some measures to allow the air conditioner to be refrigerated before adding fluorine. Then we take the following methods to artificially interfere with the operation of the air conditioner, refrigerate the air conditioner, and enable the external unit press to operate.
1, we pinch the ambient temperature sensor of the internal unit with our hands and let it detect the temperature of the hand. Then, turn on the air conditioner to refrigerate, and the air conditioner can be refrigerated. We can also put the indoor temperature sensor probe into hot water. The principle is the same, that is, let the air conditioner detect the indoor temperature to a high temperature, then let the air conditioner refrigerate and then add fluorine.
2, we can also allow the air conditioner to heat, normal heating, external unit running, and compressor running. At this time, we artificially cut off the power supply of the four-way valve of the outer unit. In this way, the external unit of the air conditioner is the same as refrigeration. The four-way valve is converted to refrigeration and heating. When the four-way valve is powered on, the air conditioner is in the heating state. When the four-way valve is powered off, the air conditioner is in the cooling state. So we artificially disconnected the four-way valve from powering on, and the air conditioner was refrigerated and operated. At this time we can add fluorine.
or above are two ways to refrigerate the air conditioner in winter and run the compressor. Next, Zhao Yu will tell you some precautions for heating and adding fluorine in winter:
1. When adding fluorine in the air conditioner in winter, the temperature is relatively low. When we check the pressure, we should combine the outdoor temperature and do not use the pressure in summer as the standard. When adding fluorine in the air conditioner in summer, the pressure is between 4 and 6 pressures. In winter, the temperature is affected by the temperature. gas pressure expands and contracts, and the pressure will be very low. Therefore, when adding fluorine in winter, the pressure can be 2 to 4, which is normal.
2, we need to combine pressure, current, and cooling effect, and comprehensively determine whether Freon has been added enough. So in winter, it is really difficult to judge how much you add based on the pressure value. If you add enough, you must combine the current and cooling effect as a reference. If it is really added, it is inaccurate. We can adopt quantitative liquid addition method. Zhao Yu will introduce below: quantitative liquid addition. Therefore, the temperature in Northeast my country is relatively low, so we use quantitative liquid addition to add fluorine.
Air conditioning parameters
Next Zhao Yu will talk about the method of adding liquid in air conditioning:
1, check the refrigerant and refrigerant charge on the air conditioning nameplate. For example, in the figure above, the refrigerant is R22Air conditioning amount is: 4 kg, which is 4 kg.
2, vacuum pump to vacuum the air conditioner.
3, measure the weight with a scale, and then fill it according to the amount on the air conditioner nameplate. We usually measure the total weight of Freon in the tank, then look at the scale, add enough weight, and turn it off. This way, the filling is the most accurate and the best effect.
