Does Oaks 3 HP inverter air conditioner need to be vacuumed during installation?

Re-vacuuming and re-adding refrigerant.

Inverter air conditioner not vacuuming may lead to:

1) When there is air in the copper pipe of the indoor unit of the inverter air conditioner, it will freeze when it encounters the refrigerant in the process of refrigeration and heating, resulting in the blockage of the filter condenser and affecting the effect of refrigeration and heating.

2) The air turns into moisture under the condition of high temperature and high pressure, and the refrigerant becomes acid when it encounters moisture, which will corrode non-ferrous metals, block the capillary, corrode the copper pipe, accelerate the mechanical wear, and cause serious damage to the compressor, and the inverter air conditioner will be scrapped in advance.

During the installation of the inverter air conditioner, because the internal unit and the connected pipeline are in contact with the air after opening the plugging cap, and after connecting with the external unit, the air in the pipeline and the refrigerant (refrigerant) of the external system are prevented from mixing, resulting in the hazards of the inverter air conditioner during operation (unstable operating pressure, system ice blockage, etc.), so the air must be discharged and pumped away after connecting the internal and external machines. After the inverter air conditioner is repaired in the system, such as replacing the compressor and pipeline accessories, the air must be pumped out after cleaning and cleaning, and then fluoride is added according to the quantitative amount. In addition, the R410A machine had to be installed with a vacuum due to the precise refrigerant scalar requirements of the system.

Most of the refrigerants used in inverter air conditioners are R410A, and the air-conditioning installation of this refrigerant is that the internal unit must be vacuumed, and the fixed-frequency air conditioner of R22 refrigerant can be vacuumed.

Air conditioning installation needs to be vacuumed, and the time must meet the requirements, and the vacuum degree must also meet the requirements.

It is certain that the factory has been vacuumed, yes, but the internal and external units of the split air conditioner are to be reconnected with pipes, and the outdoor unit has a valve to control it, but when the indoor unit is connected, the air will naturally go in when the head is opened, so after the connection, the heart needs to be vacuumed or emptied with refrigerant. If the emptying is not good, the refrigeration effect will definitely not be good.

Dude, I feel that the master has vacuumed I'm an air conditioner maintenance man, and I can tell you responsibly Since I took out the vacuum pump and connected it to the tube to pump it, then there is no need to smoke it fake, you see, because it's all taken out and connected to the tube, it's a waste of time, do you know what I mean, it only takes a few seconds to open the air valve. Hehe: I hope to adopt.

Vacuuming, the vacuum machine is the negative pressure most of the time is only a little moving, you can't see it if you don't look carefully. After 20 minutes, it is the master who opens the valve so that the refrigerant can flow and refrigerate. Vacuuming is simply pumping the air from the inner machine and connecting the pipes.

If there is still air left, the air conditioner will not last long, because it is easy to have air for a long time, so it is very troublesome to change the capillary tube and vacuum! I couldn't feel it at the time!

The meter must not move, because the pressure gauge measures very little negative pressure, so it can not be seen that it has not moved, and the master put down the valve to check whether it is pumped clean

The watch is moving down, and it's okay to smoke for 20 minutes, trust the master.

When air is mixed into the refrigeration system using R410A refrigerant, the air conditioning effect and service life of the air conditioner will be affected.

Since it is a vacuum pump, I don't even know how to operate the basic operation, so I really don't know which vacuum to pump.

After vacuuming with a vacuum pump, close the compound pressure gauge valve, maintain negative pressure for more than 10 minutes, and release the high and low pressure stop valves when confirming that there is no refrigerant leakage, and then remove the pressure gauge connecting hose.

It is recommended to remove all the refrigerant, re-vacuum, and add new refrigerant.

The effects you basically don't feel.

When installing, it is also possible to directly use fluorine to eject the air without taking out the air. The refrigeration effect is the same.

Generally, the fixed speed machine uses R22 refrigerant, and the manufacturer usually adds dozens of grams of refrigerant during production to be used for emptying during installation, so there is no need to vacuum.

Now how to install is not clear, the previous installation is not vacuumed, after the installation of the copper pipe, from the high pressure valve of the external machine put a little gaseous fluorine into the inner machine and the pipeline, just drive the air out, do it back and forth two or three times, there will be no air in the pipeline.

Fixed-frequency air conditioners are not vacuum-rented, unless they are trapped, and if the inverter air conditioner is not vacuumed, the temperature of the air outlet during refrigeration is higher than that of vacuuming. And the effect is not as good as that of vacuuming, and the power consumption is also a little larger.

Theoretically, the refrigeration and thermal effect is not good, and there is no big impact in actual use!! Because in the general air-conditioning system, there is a self-filtering !! That bit of air in your new air conditioning duct isn't a faux close!!

Mine too, asking the vacuum installer not to smoke, saying that it is useless to hit **.

All refrigeration equipment must be vacuumed, and it is not standard to not vacuum.

Only inverter air conditioners need to be vacuumed.