Nowadays, the presence of air conditioning in the car is an integral part. comfortable ride. True, problems with the operation of the air conditioner are added to the worries about the operation of the car as a whole. So, sooner or later, the amount of freon in your car air conditioner will decrease, and the system will simply cease to perform its functions.

Refueling with freon - diagnostics of the car air conditioner

It is quite easy to recognize the symptoms of a lack of freon in the auto-conditioning system - when air is injected, the temperature in the cabin practically does not drop to the desired level. Should I wait until the problem manifests itself? On the contrary, it is recommended to diagnose and refuel freon every season, and it is best to address the issue at the beginning of summer. So you will not find yourself at the very peak of the heat under the baking sun with a non-working air conditioner.

The reasons for the decrease in freon in the car air conditioner are very different. Most often, the problem lies in the pipes of the system, which at the joints of the compressor have rubber seals and loosen while driving. As a result, the refrigerant is released to the outside.

Freon leaks are easy to spot by looking under the hood. characteristic feature refrigerant losses are greasy spots on the lines. Sometimes the cause of losses is insignificant, when its valves suffer water hammer. This can happen due to improper refueling with freon or air conditioner oil. Failure of high and low pressure freon in the system is a more complex problem that can only be dealt with in a car dealership, after a thorough diagnosis of the car.

Freon refueling - what is inside the car air conditioner?

So, if you set out to refuel the car air conditioner with freon, you have two options - go to a car service, or do the procedure yourself. Refueling the air conditioner is an operation that is carried out at every service station, due to its low complexity. However, the usual set of motorist tools is not enough for this. In car services, it is customary to use electric scales when refueling or refueling, which will accurately indicate how much freon in the air conditioner is not enough.

To perform the process on your own, it is more convenient to use a manometric station - it shows the pressure in the system, which we will focus on. The gauge station does not always come with hoses of the right diameter, so buy them separately. You will also need an adapter for the main tube of the air conditioner. It is worth noting that for different types freon they are different. You will need, of course, the balloon itself with desired type freon. For refueling or full refueling You will have enough cylinder for 1 kg.

Before performing work on refueling the car air conditioner, you should find out what freon it works on and how much it will take for a full charge. Most cars use R-134 freon in the air conditioner. Air conditioners in older car models (until 1993) use R-12 freon. It will not be difficult to find out which of them was previously uploaded to the system. It is enough to open the service book of your car.

If for some reason you did not have such a book, then open the hood of your car and find the technical mounting plate. It contains all the technical data that you will need to refuel the air conditioner. Typically for most passenger cars the normal amount of freon is 400-600 grams. If there was no plate under the hood, you will have to navigate strictly by the pressure gauge - the normal operating pressure during the operation of the air conditioner is considered to be 280-290 kPa.

The amount of freon - the optimal pressure in the air conditioner

After you have decided on the type of refrigerant and purchased the right tools time to start refueling. Open the hood and find the low pressure line with the filling valve. Most cars have air conditioning pipes on the left side. Distinguish the highway high pressure from the low pressure line is quite simple. The low-pressure line is thicker in diameter and, as a rule, located in a more accessible place.

Then we unscrew the cap on the line and wipe it with a rag so that no debris gets inside with it. We connect the refrigerant cylinder and the line with a hose with adapters. By the way, you will need an assistant - during refueling, it is required that the engine speed of the car be constant and reach 1500 rpm. That is, someone will have to put pressure on the gas. This action it is required to produce in order for the compressor to be under medium load and to quickly drive freon along the highways.

Turn on the air conditioner to the maximum and open the windows in the car. On the instrument panel, set the air recirculation in the cabin. After all the settings are made, you can proceed to the direct refueling of freon. We take a cylinder with freon, turn it over so that the fitting with the hose is directed downwards, slowly unscrew the valve on the cylinder. After that, open the valve at the manometric station. It is not worth filling the system above 280-290 kPa, such filling will cause the breakdown of the air conditioning compressor.

If you are refueling yourself for the first time, it is better not to raise the pressure in the system above 275 kPa. This is quite enough for the freon in the system to circulate normally, and the compressor pumps the required temperature. These procedures should not be performed in the heat, it is best to work indoors. After the required amount of freon has entered the system, we turn on the valve on the cylinder and wait 15-20 minutes until the air conditioner completely drives the freon through the highways. At the same time, water should come out of the drainage tube - clear sign condensation due to air cooling.

Another way to check if the cooling system is working properly is to measure the condensate.

Place a container under the drain tube and leave the air conditioner to work at medium power in recirculation mode for at least a quarter of an hour. During this time, at least 250 ml of liquid should accumulate. If there is less liquid, then the amount of refrigerant is not enough - measure the pressure again. Although it is possible, the problem is that at least twice a season it needs to be cleaned of dust. You can also clean it yourself. After completing a set of works, the air conditioner should function perfectly!

Refueling the air conditioning system is an integral part after-sales service automobile condor. This is very important, since the functionality of the unit as a whole depends on the amount of refrigerant in the system. How much freon is in the car air conditioner, table along with detailed instructions presented in this article.

[ Hide ]

How can you tell if you need refueling?

To refuel car air conditioners, you first need to figure out how the system works. After all, it is not a fact that refueling will solve the problems associated with the operation of the unit. As you know, the purpose of the air conditioning system is to cool air flow, as well as maintaining the established temperature regime in the cabin. As consumable the refrigerant acts - freon, which circulates through the system.

Although in general, Conder on almost any car is quite reliable unit, refrigerant leakage may occur in any system. If the unit is working generally fine, but the loss of freon can be about 15% per year, but if this figure is higher, then there is probably a malfunction in the car air conditioner. Depending on the condition of the air conditioning system, the interval for charging the unit with refrigerant is determined (the author of the video is the Cheviplus LIVE channel).

It should be noted that in order to refuel the conder, you need to make sure that the unit is working properly, otherwise there will be no point in adding freon to the system. First of all, the need to refuel the system arises if the air flow that circulates in the cabin has ceased to be cold. However, as practice shows, it is always better to refuel the system not when a malfunction occurs, but when the unit is being serviced. Through preventive action, you can prevent possible faults, which can happen in the operation of the node.

Please note that adding freon to the system allows not only to cool the air flow, but also to contribute to a more normal operation of the unit as a whole. The refrigerant has special oil, good condition which allows you to maintain the performance of the main elements of the system. So the use of high-quality freon will increase the service life of the system.

When refueling, we felt that we blew cold air, but for normal operation The system needs a certain weight of Freon and the addition of oil. For normal operation, refilling with the replacement of the dryer is mandatory.

If you notice that the volume of consumables in the system has decreased, the reasons may be as follows:

• lack of tightness at the connections of highways (pipes);
• happened mechanical damage highways;
• the formation of corrosion on the capacitor device (the author of the video is MAKS ZOLOTAREV).

Freon leak: search and solutions

Step-by-step guide to refueling the air conditioner

How to replace freon in a car air conditioner:

1. First you need to open the hood and remove the cap from the main hose - this element is responsible for the low pressure in the unit. By removing the cap, you can reduce the pressure in the system. Also, it will not be superfluous to clean this place, since debris cannot be allowed to enter the highway. Do this carefully, as dirt entering the system can damage the compressor unit.
2. Then the hose is installed on the filling fitting. Check with service book to know exactly where it is located.
3. After that, it is necessary to start the car engine and warm it up to operating temperature. Please note that when working power unit its revolutions should be at the level of 1500, preferably no less.
4. When the engines are running, it is necessary to turn on the air conditioner, while setting the air flow recirculation mode. The power of the air conditioner should be the highest.
5. Next, the valve responsible for the low pressure in the system opens, and the valve on the freon cylinder should also be opened at the same time. If you managed to relieve the pressure yourself, then the system is charged with freon. In this case, the engine must be started, this is mandatory, since the refueling procedure is always carried out with the engine running.
6. When filling the system, pay attention to the pressure gauge readings. This is mandatory, since the level of pressure in the system is one of the main parameters of its performance. Make sure that this value does not exceed the threshold of 285 kPa.
7. After a while, you may feel that cool air began to appear in the interior of your car, which indicates that the procedure is successful. At this stage, it is necessary to turn off the previously opened tap in time. This moment should come when the temperature of the air that comes out of the blowers in the passenger compartment of the car will be around 5-8 degrees.
8. After the refueling procedure is successfully completed, it is necessary to diagnose the correctness of its implementation and evaluate the result. The refrigerant replacement procedure can be considered successfully completed at the moment when there is a clear liquid on the filter, while there should be no bubbles in it. If it is not transparent or there are bubbles on it, this indicates that the cleaning of the system lines has not yet been completed, or you have done something wrong. If so, then the procedure can be repeated.

Any air conditioner requires a refrigerant, also called freon. Freon is fluorine and chlorine-containing derivatives of hydrocarbon compounds that are used as refrigerants in modern refrigeration units. To date, there are more than 40 types of stable compounds with different individual properties. Two types of refrigerant are most commonly used in domestic air conditioners: freon R22 And freon R410a. Letter R stands for Refrigerator- cooler, refrigerant It is possible to buy a refrigerant on your own, and refuel it, but only if you have specialized expensive tools, so it will be much cheaper and better to invite a specialist! You can see the pressure of the refrigerant in the system using a manometric station.

During system operation, no cooling, manometer of blue color (low pressure) measures the pressure at the inlet of the line circuit to the outdoor unit - refrigerant suction side (before the condensing unit), red gauge (high pressure) measures the pressure at the outlet of the line circuit from the outdoor unit - discharge side (after the condensing unit).

The maximum low and high pressure ratings for each type of system, with any type of refrigerant, are usually indicated on the body in the manufacturer's plate:

Discharge side- the discharge side, that is, high pressure, the refrigerant (freon) is in a liquid state, after the compression process by the compressor in the outdoor unit;

Suction side- suction side, that is, low pressure, the refrigerant (freon) is in a gaseous state, after the evaporation process during indoor unit conditioner.

In domestic air conditioners operating in cooling mode during the warm season, it is necessary to measure the low pressure on the refrigerant suction side, that is, using a blue pressure gauge. The manometric station is connected to the service valve with the help of a specialized hose, which is located at the point where the thick (gas) tube is connected to the outdoor unit. It is necessary to let the system work (with the compressor on) in cooling mode for 10-15 minutes, and then look at the pressure gauge readings. Be sure to measure only when the compressor is running.

But in order to refuel, you need to know what pressure should be in this air conditioner. For this, it is applied. Below you will find tables with pressure parameters for different types of freons and the most common capacities of air conditioners. For high-quality production of pressure measurements and making a correct assessment, I recommend measuring the air temperature indoors and outdoors. Also, please note that the data in these tables may differ slightly from those measured in your specific conditions.

Freon pressure table

R410a freon pressure parameters on the suction side

Pressure parameters of freon R22 on the suction side

indoor temperature readings are given for a dry / wet bulb

But remember that only a specialist who knows how to not only connect a manometric station to desired valve, but also well versed in the device and the specifics of the refrigeration cycle. Many people, not possessing these skills and knowledge, as well as an additional tool, such as a tong tester, for example, draw conclusions about the lack of freon only by the pressure in the system. Very often (especially in cold weather) this leads to the appearance of excess pressure and, subsequently, the death of the compressor.

All domestic split systems are supplied with refrigerant already pumped into them.. If a leak is suddenly found out, then before refueling, it is imperative to find the cause of the leak, eliminate it, and only after that refuel. Otherwise, the work will be done in vain and everything will be repeated again.

Freon R22- consists of one component, therefore it is easier to use for refilling air conditioners in the event of a leak. It can be pumped into the system without the use of electronic scales, using only a manometric station and an electronic thermometer. Since R22 freon is recognized as harmful to the environment and the ozone layer, its use is gradually being phased out. In EU countries since 2010 given type refrigerant is prohibited. On this moment V Russian Federation deliveries are made domestic air conditioners only on safer and more modern freon R410A, and in soon equipment will be delivered on the new freon R32.

Attention: systems operating on R410 freon can only be refueled in very rare cases, and only a competent specialist can determine this. Mostly refueling with R410a freon occurs in case of an increase in the length of the freon line during installation, and is carried out by adding refrigerant strictly by weight for each meter of the line that exceeds the standard, the weight is indicated in the installation (installation) instructions for the system.

In cases of leakage of freon R410a, air conditioners should be charged, clearly by weight, after removing all the old freon from the system. This is due to the fact that R410a consists of two components, and in the event of a leak, one component, having a higher density, squeezes out the other, violating the proportion of the components, as a result of which the refrigerant loses its thermodynamic properties.

The process of filling with freon R410a.

If the “conditioner” simply “threw” the pressure gauge assembly on the service valve and proceeded to fill the air conditioner with R410a freon without electronic scales, you should know that the result will be a call to another master, and possibly a system failure.

Refueling the air conditioner- a very responsible procedure that can only be entrusted to a qualified specialist!

If you want to produce professional diagnostics and refueling your air conditioner, I recommend contacting our partner who kindly provides a 15% discount on all work and materials to any buyer of our store *

And of course, do not forget to like and subscribe to us on social networks, there will be many more interesting things!

For the first time, the name freon entered our lives almost 90 years ago, when the American chemist Thomas Midgley Jr. received a patent for his invention. Almost all climatic products today work on freons. different brands, and technology is the substance called freon. The quality of any split system depends on this very important component: if it is not enough in the system, then freezing of parts and connections begins. Considering that the price of the compressor is approximately 60% of the total cost of the entire installation, namely, freon maintains its performance at the proper level, users must refuel the air conditioner in time. How to properly fill the air conditioner yourself - we will tell in our article.

There are two answers to the question of how much freon is in the air conditioner.

1. The system has been installed for a long time, and the user is interested in the amount of freon in the air conditioner, and is there enough refrigerant for good work products. It is practically impossible to check the exact amount of freon in a split system with the help of specialists or on your own, but you can find out the freon pressure in the air conditioner, all operating parameters, in order to find out if you need to refuel, you can by using special equipment and service technician.
2. The split system is installed with an extended laying of communications, or it must be completely refilled. How much refrigerant will be needed for normal operation in this case? To independently calculate the amount of gas that should be in the air conditioner, you need specific information - you can find it in the table.

There are nameplates (tablets) on the external and indoor units, the brand of freon, its quantity in kg and working pressure are indicated there.

The standard amount of refrigerant depends on the relative power of the product: the "seven" has up to 750 grams, and in the most powerful split system up to 1.7 kg. If your route turned out to be longer than recommended by the manufacturer, then for each extra meter it is necessary to add from 15 to 30 grams of freon. Each brand of product, for example: LG or Toshiba, has its own restrictions on the height between blocks and the length of the track. Exceeding them is unacceptable, because this affects the performance of the entire system.

Causes of the leak

In order for the product to function normally, the amount of freon in the air conditioner must be sufficient for constant circulation. Unfortunately, leakage does occur during operation, and such reasons may be to blame.

1. Design imperfection- copper tubes, through which freon circulates, are expanded on site during installation, so insignificant losses occur during operation. Over time, it is required to fill the air conditioner with freon.
2. During the transportation previously installed freon product in the air conditioner may slightly decrease in volume, the same nuances can happen when dismantling and reinstalling it. Therefore, you need to pump freon into the air conditioner at a new installation site.

When the product regularly passes Maintenance, timely cleaning, then excessive evaporation of the refrigerant does not occur, the only negative remains - its leakage through the connections.

Many users are sure that refueling the air conditioner with their own hands is impossible, but such very dubious rumors are supported by service specialists so as not to lose their earnings. Yes, you will need specific equipment, but this is not a problem in our progressive age.

Refueling options

Statistics say that any climate class product during operation loses 8% of the initial charge per year, so once every 2 years it is necessary to fill the split system with freon. Will you do it yourself or invite a specialist - this is a separate issue. The air conditioner needs to be charged and in the event that it produces a temperature slightly lower than what you set on the display, the pressure must be constant inside the system and the amount of refrigerant plays a major role in this.

Very important! The lack of refrigerant volume does not ensure the normal operation of the device, and excess pressure is the surest cause of unexpected compressor failure.

There are two main methods of refueling the air conditioner with freon.

1. By degree of pressure. To determine the amount of volatile gas to fill, you need to know optimum pressure indicated in the operating instructions, compare it with the pressure in the air conditioning system, which shows the connected manifold. As a rule, this method of refueling the air conditioner by pressure is carried out when freon leaks due to long-term operation.
2. By weight. The method is used when the refrigerant is completely replaced - first it is pumped out of the system, and then, using electronic scales, knowing the weight of the gas pumped into the cylinder, they fill the split system with freon.

There is a technique using a measuring glass, but it is used very rarely to fill the air conditioner with refrigerant, only after repairs have been carried out. If air bubbles are detected in a special viewing window, freon is not pumped until they disappear from the system.

Preparation

To fill the air conditioner with freon yourself, you will need special devices and tools that can be rented at the service center, the costs will be much lower than calling specialists for similar work.

Do-it-yourself preparation for charging the air conditioner with refrigerant should begin with visual inspection pipes connecting the remote module with the evaporator, and checking the tightness of the entire circulation system. After checking the connections, upload inside gaseous nitrogen, after suction, the leak is checked by a pressure gauge: if the pressure does not drop, the tightness is normal, and the leaks did not occur due to damage to it.

Now you can go to evacuation of the refueling device, for this use a vacuum class pump and a manifold. The unit is connected through a manifold - it is turned on, and the minimum pressure is determined by the pressure gauge. When it is reached, the device is turned off, the tap is turned off - the preparatory process has been successfully completed.

Attention! At the end of the above work, it is impossible to turn off the collector.

What freon to use

Before describing in detail how to fill the air conditioner at home, we will answer many readers who quite often ask the sacred question: what do air conditioners fill with and where to buy the necessary gas cylinders. Freon brand R410A does not contain chlorine, therefore it does not affect the atmosphere negatively - it quickly gained popularity among users. His refueling fellow brand R-407c consists of three components with the same letters in the name:

• 32 - responsible for excellent performance;
• 125 - Fire safety at work;
• 134a - stabilization of the pressure of the working circuit.

In the event of leaks, its components evaporate unevenly, so you can not refuel, so as not to disturb the concentration - all the freon is drained and a new one is charged. You can buy cylinders with freon of any kind in specialized warehouses, addresses by region can be found on the Internet.

Few users decide to fill the climate technology system with refrigerant on their own, because this requires complex devices: a digital scale and a thermometer, a manometric manifold, a set of hex keys and the ability to use it all.

It is better to use a four-position manifold - it is convenient to connect all the necessary hoses, the tightness of the system is completely preserved, there is no contact internal system outdoor air conditioner.

Refueling algorithm

Here is a detailed step by step guide for refueling the product. We are talking about charging any climatic product using the superheat indicator method: there is a difference between the temperature of superheated steam and its analogue, which means the boiling of the refrigerant. The first of the indicators is controlled by an electronic thermometer, which is enough to attach to the gas tube of the product, the second - according to the readings of a pressure gauge that measures low pressure. The difference in temperature is within 5-8 degrees, if it is at least a little higher, then the product has not been refueled for a long time - it is necessary to refuel.

1. We open the locks that are on air conditioner fittings to remove all refrigerant. When the pressure will drop to the minimum - close the locks.
2. We put the container with freon on the scales, set the value "0" on their display.
3. To bleed the air inside the hoses, briefly open the valve on the manifold.
4. Now open gas valve- the filling process is started, the pressure in the product system gradually increases, and the temperature in the pipeline will decrease.
5. When the difference between them is no more than 8 0 C - close the valve on the manifold, and then block the refrigerant outlet from the cylinder.
6. The weight of liquefied gas spent on refueling the air conditioner is found on the scale display.

We turn on the charged split system to check all the functionality. If during operation frost does not appear on the taps of the outdoor unit, then you correctly calculated the amount of refrigerant - the product is charged without violating the recommended technology.

For confident work on refueling or refueling, users will need a video:

Sooner or later, every car air conditioner needs to be filled with freon. This is due to the fact that during operation, the refrigerant in the system constantly evaporates and condenses. During these processes, a certain amount of substance is lost, which means that the losses must be replenished. As part of this article, we will tell you what is the rate of refueling an air conditioner for domestic cars so that each of our readers can calculate for himself how much freon he needs to purchase to refuel the car air conditioner with his own hands.

Norms of air conditioners on Lada Priore

Lada Priora cars, also called VAZ 2170, are refueled with R134a refrigerant. The working volume of the air conditioning system of this car is 600 grams. If the freon level drops below 450 grams, then this means that the car's air conditioning system needs to be refueled.

Air conditioner standards for VAZ 2108, 2109, 2110, 2111, 2112, 2113, 2114 and 2115

On these vehicles, in factory configurations, the installation of an air conditioning system is not provided. At the same time, there is an opportunity to install a car air conditioner in them, so many car owners install kits from the Frost company on them, which produces models of automotive air conditioners that are similar to those that were originally planned to be installed in this series machines.
It is necessary to fill the air conditioners of these cars with the help of R134a brand refrigerant. The volume of freon in the system is similar to the volume in Prior - 600 grams. Minimum working level: 330 grams.

Important! Unlike cars Lada Priora, in the Samara series, in addition to freon, special SP-20 oil must be added to the car air conditioner. The rate of filling the car air conditioner with such oil can be read on the packaging of this substance.

Norms of air conditioners for Lada Kalina

Very popular among domestic consumer cars Lada Kalina, it is necessary to fill with R134a freon. For the normal operation of the air conditioning system, from 320 to 600 grams of refrigerant is required, to which you need to add a certain amount filling oil SP-20, the amount of which must be specified on the refueling bottle.

Norms of air conditioners for VAZ 21102

Just like on most other open source models. joint stock company AvtoVAZ, to refuel the VAZ 21102 air conditioner, it is necessary to use R134a refrigerant. If the freon level drops below 350 grams, then this means that it is required for the VAZ 21102, while maximum level of this substance in the system should not exceed 600 grams, and this is taking into account the SP-20 oil, which must be poured into the system at each refueling.

Standards for air conditioners on the VAZ 2114

The refueling rate for the VAZ 2114 air conditioner is 600 grams. In this case, you need to understand that the level of refrigerant in the system should not fall below 330 grams. During refueling, just as in the case of other car air conditioners on VAZ and Lada cars, a small amount of oil for refueling is required to be poured into the system - SP-20.

air conditioner standards Chevrolet Niva

Although city cars off-road Chevrolet Niva, developed by designers of domestic automobile enterprise together with foreign colleagues, the air conditioning system in them is the same as in other cars coming off the AvtoVAZ conveyor. These air conditioners are also charged with R134a refrigerant.. The maximum amount of freon in the system is 600 grams, and the minimum, for normal operation, is 330 grams.