What is the difference between vacuuming and emptying an air conditioner? How does it work?

There are also two types of vacuuming, one by external machines (vacuum pumps) and the other by its own compressors. Evacuated with a vacuum pump, the vacuum degree is relatively high. However, using its own compressor to evacuate will not achieve the effect, and there will be a certain amount of air in the system.

Vacuuming with a vacuum pump is simple. As long as the suction pipe of the vacuum pump is connected to the process port of the three-way low-pressure valve of the air conditioner, and then it can be pumped, (this can only pump the air in the inner machine and the connecting pipe.) If you want to evacuate all of them, you need to open the valves of both 3-way valves.

Draining, which is the easiest way to install an air conditioner. The specific operation is: after connecting the connecting pipe, loosen the copper nut connected to the low-pressure pipe and the three-way valve for one or two turns, and then open the high-pressure three-way valve for one or two turns.

Wait for the low-pressure nut to be outgasped for more than ten seconds before the nut can be tightened. This completes the emptying.

Emptying is divided into internal gas emptying and external air emptying, internal air emptying is to use the refrigerant that comes with the air conditioner to discharge the air in the indoor unit, that is, the air in the pipeline, the mixed refrigerant (fluorine-free air conditioner) can not be emptied with internal gas, the external gas is closed with two or three way valves, connect the refrigerant and loosen the small cap, the air is discharged, and the vacuum is generally used in the machine without refrigerant, or when installing fluorine-free air conditioning, it is used to exhaust the air inside the machine to avoid the effect of air influence and the air contains moisture, and it is illuminated into ice plugging (unlikely).

Evacuation is to use a vacuum pump to pump from the refrigerant mouth after installing the air conditioner, empty the use of refrigerant to replace the air, disassemble the high-pressure pipe and press the thin copper pipe head by hand to start the machine, from the refrigerant mouth ribbon and refrigerant, after a few minutes lock the high-voltage shutdown and then add a little to release the hand, there is refrigerant from the high-pressure copper pipe to connect it.

Air conditioning vacuuming is very simple, and you can use your own compressor. There are two air connection holes on the outer machine, one is the air outlet and the other is the air intake, which is marked on it. After the installation is completed, close the air inlet and open the air outlet, connect the copper pipe of the indoor unit to one and the other empty (the air compressor is connected to the air hole), and then connect the other copper pipe after 10 minutes of starting, and then open the air inlet hole to add refrigerant;

1. When the inner and outer machines are connected, observe the oil label indication of the vacuum pump to see if there is enough oil; Start the vacuum pump to see if it is normal.

2. Connect the pipeline: unscrew the nut of the back cover of the large and small valves and the nut of the fluorine injection nozzle, connect the low pressure of the pressure gauge, and connect the end with the thimble to the side of the fluorine injection nozzle; Turn on the low voltage gauge switch.

3. Vacuum process: the specific time of vacuum is about 20-30min, which is subject to the pressure gauge pointer; Close the pressure gauge and low pressure valve first, then turn off the vacuum pump.

4. Pressure holding: Observe the pointer of the pressure gauge for 5 minutes to see if the pointer rotates. If the system pressure leakage is greater than that, it means that the system has leakage; If there is a leak, check for possible leaks and repeat the evacuation process.

5. Open the small valve and dismantle the meter.

6. Open the pipeline: first open the small valve completely, and tighten the screw cap on the back cover of the valve immediately after the large valve is fully opened.

7. Finally, leak detection: check the various interfaces and shut-off valves of the internal and external machines, dip the sponge block in soapy water and apply it to the suspicious point, and each place should not stay for less than 3 minutes, if there is a bubble formation, there is a leakage point.

The air conditioner is powered off. The refrigerant infusion tubing is connected to the vacuum pump.

Select the refrigerant infusion tubing with the "raised" end to be vacated.

Use a live wrench to unscrew the external machine maintenance port nut.

Connect the refrigerant infusion line with the "raised" end with the repair port and tighten it.

The vacuum pump is energized, turn on the switch, and vacuum for 20 minutes.

The first step of vacuuming:1First, confiscate the hexagon wrench of the installer.

Unless you trust him, he won't use the hex wrench until you agree, otherwise in order to prevent any unnecessary operation by the installer, confiscate the installer's hexagon wrench first! Let's take a look at the legendary Allen wrench first. Don't, everyone.

Summary. Do I have to vacuum my new air conditioner when it is installed? Hello dear, 1

Not all air conditioners need to be vacuumed. Generally, inverter air conditioners, fluorine-free new refrigerant air conditioners and other types need to be vacuumed, and ordinary air conditioners are not necessary. The air conditioner does not vacuum and will not run, but the air conditioner will be less efficient because there is air mixed in the refrigerant.

2.Reason for vacuuming: If there is air and other gases mixed in the air conditioning system, it will affect the cooling and heating effect of the air conditioner, resulting in increased power consumption, louder noise, and even shorter service life of the air conditioner.

Do you have to vacuum the new air conditioner? Hello dear, 1Not all air conditioners need to be vacuumed.

Generally, inverter air conditioners, fluorine-free new cold BenQ media air conditioners and other types need to be vacuumed, and ordinary air conditioners are not necessary. The air conditioner does not vacuum and will not run, but the air conditioner will be less efficient because there is air mixed in the refrigerant. 2.

Reason for vacuuming: If there is air and other gases mixed in the air conditioning system, it will affect the cooling and heating effect of the air conditioner, resulting in increased power consumption, louder noise, and even shorter service life of the air conditioner.

Can you add, I don't quite understand it.

Do you have to vacuum the new air conditioner? Hello dear, 1Not all air conditioners need to be vacuumed.

Generally, inverter air conditioners, fluorine-free new cold BenQ media air conditioners and other types need to be vacuumed, and ordinary air conditioners are not necessary. The air conditioner does not vacuum and will not run, but the air conditioner will be less efficient because there is air mixed in the refrigerant. 2.

Reason for vacuuming: If there is air and other gases mixed in the air conditioning system, it will affect the cooling and heating effect of the air conditioner, resulting in increased power consumption, louder noise, and even shorter service life of the air conditioner.

1. Not all air conditioners need to be vacuumed. General inverter air conditioner.

Fluorine-free new refrigerant.

Air conditioners and other types require vacuuming, which is not necessary for ordinary air conditioners. The air conditioner will not run without vacuuming, but the air conditioner will be less efficient because there is air mixed with the refrigerant.

Village. 2. The reason for vacuuming: if there is air and other beams in the air conditioning system, it will affect the cooling and heating effect of the air conditioner, resulting in increased power consumption, louder noise, and even shorter service life of the air conditioner.

Is it necessary to vacuumize the air conditioner? What happens if you don't vacuum?

First, first of all, our first question, is it necessary to vacuumize the installation of air conditioning?

Whether the installation of an air conditioner requires vacuuming, the key is to see what kind of refrigerant is used in the air conditioner.

In the past, when air conditioners were installed, there was no concept of vacuuming, because the early air conditioning refrigerants used R22, which is what we usually call freon. This refrigerant has stable performance and is fed directly into the freon, which is used to squeeze out the air in the equipment and pipes. Although this method may lose a little refrigerant, it is generally not significant, so air conditioners using R22 do not need to be vacuumed.

However, although this R22 has its advantages, it has tended to be eliminated because of the requirements of environmental protection, and even if it is still used, most of it is used in fixed-frequency air conditioners.

Today's air conditioners, whether they are inverter or fixed frequency, basically use more environmentally friendly refrigerants: R32 or R410A, all air conditioners that use these two refrigerants need to be vacuumed when newly installed or moved.

Second, what happens if you don't vacuum?

1，r32

R32 is a refrigerant, but also a flammable and explosive substance, this kind of thing, if in contact with air, when encountering high temperatures, or sparks, it is very easy to deflagrate.

2，r410a

R410A is a 1:1 mixture of two refrigerants containing Yuho R32 and R125, which is more stable than using R32 alone. However, because the boiling points of R32 and R125 are not the same, the ratio of the two will change if it is not in a vacuum.

In the past, we used R22 fixed-frequency air conditioners, all of which used mineral lubricating oil, which is insoluble in water. Nowadays, inverter air conditioners use the new refrigerants R32 and R140A, which are lubricated with ether oil, which absorbs water vapor and produces acidic substances. Think about it, what happens if the refrigerant contains acidic substances?

Third, what problems will occur if you do not vacuum?

1. Damage to the compressor

As we said above, inverter air conditioners use ether oil lubrication, and ether oil will produce acidic substances when it encounters water vapor. This acidic substance is a corrosive agent, which corrodes the copper pipeline, and the corroded copper ions will adhere to the compressor to form "copper plating", thus causing damage to the compressor.

2. Affect the refrigeration effect

R140A is a mixed refrigerant, in strict accordance with the ratio of 1:1, if the air is mixed, the ratio will change, affecting the refrigeration effect. Another point is that the moisture in the air will condense in the capillaries, clogging the channels and causing the air conditioner to malfunction.

3. Increase power consumption

If there is air in the circulating system, the compressor temperature will rise, the pressure in the pipes will increase, and the power consumption will increase.

4. Flammable and explosive

Although R32 is environmentally friendly, it is chemically unstable, flammable and explosive, and if it is not vacuumed, there will be air in the pipeline, which increases the danger.

Yes, vacuuming is required when installing an air conditioner. Vacuuming is done to remove air and impurities from the air conditioning system to ensure that no gases and moisture are present inside the system. Vaucing can improve the efficiency and performance of the air conditioning system, while also preventing system failures and damage.

Therefore, vacuuming is one of the important steps in installing an air conditioner. When installing air conditioners, the purposes of vacuuming include:

1.Removal of air and moisture from the system: Air and moisture can have a negative impact on the operation of the air-conditioning system, such as causing gas leakage, reducing the cooling effect, etc. Evacuation can extract air and moisture from the system to ensure the normal operation of the system.

2.Prevent gas leakage: When vacuuming, all connections will be checked for gas leakage before liquid, and repaired to ensure the tightness and safety of the system.

3.Removal of oil and impurities: During the vacuuming process, the oil and impurities in the system are also removed to ensure the cleanliness and smooth operation of the system.

Therefore, in order to ensure the normal operation and safety of the air conditioning system, vacuum operation is generally required when installing the air conditioner.

Yes, when installing an R32 air conditioner, the refrigeration system of the air conditioner needs to be vacuumed. Vacuuming is an important step in the installation process of the air conditioner, which can ensure that there is no air and moisture inside the refrigeration system, so as to improve the cooling effect and service life of the air conditioner.

The specific steps for vacuuming are as follows:

Install the indoor and outdoor units of the air conditioner in place and connect the copper pipes.

Use a wrench to tighten the copper tube fitting to ensure that the connection does not leak.

Connect the vacuum pump's air extraction port to the low-pressure side (large pipe) joint of the outdoor unit.

Turn on the vacuum pump and start vacuuming. The evacuation time is usually 15-30 minutes, depending on the cooling capacity of the air conditioner and the length of the copper pipes.

After the evacuation is complete, turn off the vacuum pump and use a wrench to tighten the low-pressure side and high-pressure side (small tube) joints of the outdoor unit.

Open the low-pressure side and high-pressure side valves of the outdoor unit to let the refrigerant enter the refrigeration system.

Check the operation of the air conditioner to ensure that the refrigeration effect is normal.

Please note that vacuuming operations require specialized air conditioning installation tools and skills. It is recommended to ask a professional air conditioner installer to relocate the machine.

Of course, the operating pressure of R410 is higher than that of R22, and the standard charge is also less, and the air is non-condensable gas and must not be mixed into the refrigeration system.

And the more important purpose of evacuation is to detect leaks, if only to not mix with the air, the emptying method can also achieve the purpose, but can not detect leaks, soapy water leak detection can only detect the outdoor interface, indoor system is not easy to detect.

After all, how many outlets can buy halogen leak detectors? R410A has a higher pressure and is more likely to leak once there is a leak point.

Theoretically, due to the high exhaust pressure of the refrigeration system using R410A refrigerant, if there is too much residual air mixed in the system, it is easy to cause the air conditioning system to have excessive exhaust pressure protection, so vacuum should be evacuated.

In the actual operation process, because most of the installation and maintenance workers are "half bottles", often there is a situation that vacuuming is not as good as not vacuuming.

When installing a new machine, it is necessary to vacuum, which is the number of wide limbs specified in the operating procedures, and it is also scientific, and it is necessary to avoid rainy days during installation, and pay attention not to drip sweat into the pipe during installation in summer.

In addition, the oil in the vacuum pump used for vacuum pumping must be POE oil, not the refrigeration oil originally used for R22, which should be paid special attention to, so it is best to prepare a separate vacuum pump for vacuuming this type of air conditioner.

However, the air conditioner that generally uses R22 refrigerant does not need to be vacuumed, but can be evacuated.