Home appliance owners often wonder what kind of refrigerant their refrigerator is filled with, especially when it comes to loss of cooling capacity or the need for repairs. The brand Atlant, being one of the market leaders in the post-Soviet space, over the years of production has used various types of working fluids in its systems. Understanding what what kind of freon circulates in the circuit of your unit is critical for proper maintenance and safe restoration of functions.
Modern models and equipment of previous years may differ significantly in the substances used. Early products often ran on freons, which are now considered environmentally hazardous, while newer lines have switched to safer and more efficient alternatives. If you are planning independent diagnostics or calling a specialist, knowledge of the type refrigerant will help you avoid mistakes when choosing equipment and materials for refilling.
In this article we will look in detail at what exactly refrigerators of Atlant different generations are filled with, consider the technical characteristics of popular brands freon and give recommendations on working with them. Correct identification of the substance is the first step towards a successful repair that will allow your device to operate normally again without risk to the compressor.
Main types of refrigerants in Atlant technology
Historically, the plant Atlant switched to new types of refrigerants gradually, following international environmental standards and energy efficiency requirements. For a long time, the de facto standard for household appliances was R134a (tetrafluoroethane). It is a colorless, odorless gas that replaced the ozone-depleting R12. It has excellent thermochemical properties and is relatively safe when used correctly.
In newer models, especially in medium- and large-volume refrigerators, as well as in devices with the No Frost system, the manufacturer began to actively introduce R600a (isobutane). It is a hydrocarbon refrigerant that is highly energy efficient and has minimal environmental impact. However, it has one critical feature - flammability, which requires special care when carrying out repair work.
Sometimes in very old models produced decades ago, you can find traces of R12, but in the context of modern repairs and the current fleet of equipment Atlant we are considering mainly R134a and R600a. The choice between them depends on the year of manufacture, chamber volume and compressor design. It is important to understand that these gases are not interchangeable without major modification of the system, since they require different types of oils and have different operating pressures.
⚠️ Attention: Never try to mix different types of freons or fill the system with a substance not specified on the nameplate. This can lead to an explosive situation (in the case of R600a) or compressor failure due to oil incompatibility.
To accurately determine the type of gas used in your specific application, you must refer to the technical documentation or inspect the device nameplate. The manufacturer always indicates this information, as it is key for service. Ignoring this data may lead to incorrect selection of spare parts.
How to determine the type of freon by marking
The most reliable way to find out what your refrigerator is filled with Atlant is to study the factory markings. The manufacturer places an information sticker that contains comprehensive information about the model, serial number and technical parameters, including the type and weight of the refrigerant. Usually this label is located inside the refrigerator compartment.
You should look for the sticker in the following areas:
- 🏷️ On the inner wall of the refrigerator compartment, most often on the left or right.
- 🏷️ On the door refrigerator, on the inside of the plastic.
- 🏷️ Less often - on the back wall of the case outside, next to the compressor.
On the label you will find a line with the designation "Refrigerant" or "Refrigerant". The chemical composition (for example, R600a) and its amount in grams will be indicated next to it. It may also indicate the type of oil used in the system, which is important when vacuuming and filling. If the sticker is worn off or missing, you can try to determine the type of freon by year of manufacture and model using reference tables, but this method is less accurate.
Please note that in two-compressor models Atlant both circuits (for the refrigerator and freezer compartments) are most often charged the same type of freon, usually R134a. However, in some modern series with inverter compressors there may be combinations, so checking each circuit separately through service fittings (if any) or by markings on the compressor will not be superfluous.
Comparative table of characteristics of R134a and R600a
To better understand the difference between the main types of freons used in refrigerators Atlant, consider their physical and chemical properties. These data are important not only for theoretical understanding, but also for practical application during repairs.
| Characteristics | R134a (Tetrafluoroethane) | R600a (Isobutane) |
|---|---|---|
| Chemical formula | CH2FCF3 | C4H10 |
| Toxicity | Non-toxic | Non-toxic (but asphyxiating) |
| Flammability | Does not burn | Highly flammable |
| Working pressure | Medium/High | Low |
| Oil type | Synthetic (POE/PVE) | Mineral |
The table shows that R600a requires much more careful compliance with safety precautions. The low operating pressure in a system with isobutane means that even if there is a microscopic leak, air will be sucked into the circuit rather than freon coming out. This complicates the process of finding leaks and requires the use of high-precision equipment.
At the same time, R134a works at higher pressures, which makes the system more resistant to external influences, but requires more powerful compressors and durable pipes. The oil used with R134a is hygroscopic (absorbs moisture), so when repairing such systems Atlant it is critical to prevent moisture from entering the circuit, otherwise acid may form that destroys the motor windings.
⚠️ Attention: When working with R600a, it is prohibited to use an open flame (blowtorches) in the immediate vicinity of a leak or opening of the system without preliminary purging. Sparks from the tool can also cause ignition.
Features of refilling and volumes for different models
The process of refilling the refrigerator Atlant directly depends on the type of refrigerant used. If for R134a the procedure is relatively standard and similar to refilling car air conditioners, then R600a requires compliance with the strictest fire safety rules. The filling volume also varies depending on the volume of the chambers and the design of the evaporator.
For models with R134a, filling in the liquid phase is typical, as this allows you to accurately dose the amount of substance by scale. In the case of R600a, due to its low boiling point and flammability, charging in the vapor phase or the use of special stations to minimize losses is often recommended. Standard dose for a two-compartment refrigerator Atlant usually ranges from 30 to 60 grams for R600a and from 100 to 150 grams for R134a, but the exact numbers are always indicated on the nameplate.
An important step is vacuuming the system. Before introducing new freon, it is necessary to remove air and moisture. For R134a, the vacuuming time can be 15-20 minutes, while for R600a this process must be longer and more thorough to eliminate any remaining air that could create an explosive mixture.
☑️ Preparation for refilling
Do not forget that when switching from one type of freon to another (conversion), a complete flushing of the system with nitrogen and an oil change is required, which is almost impossible to do at home. Therefore, the rule “what was refilled is what we refill” is the gold standard in the service Atlant.
Problems with freon and diagnosis of leaks
The most common cause of loss of cold in refrigerators Atlant is a leak refrigerant. This may occur due to corrosion of the evaporator (especially in models with a foamed evaporator in the wall), mechanical damage to the tubes, or poor-quality factory soldering. The symptoms of a leak are the same for all types of freon: the compressor works constantly or with short pauses, and the temperature in the chambers does not drop below room temperature.
Diagnostics begins with a visual inspection. If you see oily spots on the tubes or at the soldering point, this is a sure sign that the freon came out along with the oil. In the case of R600a, which circulates with mineral oil, the stains are more noticeable. For R134a, where synthetic oil is used, the stains may be less obvious, but stickiness remains a characteristic feature.
To search for micro-leaks, technicians use leak detectors configured for a specific type of gas, or a soaping method. When using a soap solution, you need to be extremely careful with the electronics of the refrigerator. If a leak is found in the foamed part (inside the wall), repairs become economically unfeasible, and often a decision is made to install an external evaporator (weeping or freezing), which changes the design, but returns life to the unit.
Why can’t you just add freon?
Added freon without eliminating the leak is a temporary measure. In addition, it is impossible to accurately determine how much gas has escaped and whether air has entered the system. The air creates plugs and increases pressure, which kills the compressor.
Environmental aspects and the future of refrigerants
The environmental issue is becoming increasingly relevant for manufacturers of household appliances, and Atlant is no exception. The move to R600a is driven not only by energy savings, but also by a desire to reduce the carbon footprint. Isobutane's global warming potential (GWP) is negligible compared to R134a, making it the preferred choice for new eco-standards.
However, disposal of refrigerators filled with R600a requires special conditions. You cannot simply throw such a unit into a landfill or pierce its tubes with a sledgehammer, as was sometimes done in the past. The gas must be safely removed at specialized collection points so as not to cause a fire or explosion at the waste treatment plant.
Even more advanced refrigerants can be expected to become available in the future, perhaps with even lower GWP and increased safety. But at the moment, the R600a/R134a combination remains dominant in the line Atlant, and knowledge of their features will be relevant for many years to come.
Frequently asked questions (FAQ)
Is it possible to fill an Atlant refrigerator with freon from a car air conditioner?
Absolutely not. Automotive air conditioners run on R134a (less commonly R1234yf), but the pressure, oil type and cleanliness requirements in automotive and refrigeration systems differ. In addition, refilling a household refrigerator requires accuracy down to the gram, and car cylinders are not designed for such dosages.
How much does it cost to refill freon at the service?
The cost depends on the region, the type of freon (R600a is usually more expensive to operate due to complexity) and the need to replace the filter-drier. On average, the service costs from 3,000 to 6,000 rubles, but the exact price can only be found out after diagnosis by a technician on site.
How often do you need to change freon in a refrigerator?
In a working, sealed refrigerator, freon never needs to be changed. It circulates in a closed loop and is not consumed. If the gas has disappeared somewhere, it means that a leak has formed, which must be found and eliminated before a new refueling.
Is R600a freon dangerous to health?
R600a itself is not toxic, but in high concentrations it displaces oxygen, which can cause suffocation. The main danger is its explosiveness at concentrations in air from 1.3% to 9.5%. Therefore, if you smell gas (although freon itself does not smell, but often has an odorant additive), it is necessary to ventilate the room and not turn on electrical appliances.