Owners of household appliances often face a situation when the refrigerator stops freezing, and the first suspicion is a leak refrigerant. The question of what kind of freon is used in Atlant two-chamber refrigerators becomes critically important when planning repairs. Not only the cooling efficiency depends on the type of gas, but also the choice of equipment for refilling, as well as the cost of restoring the functionality of the unit.
Modern models of the Belarusian manufacturer can be charged with different types of refrigerants depending on the year of manufacture and series. Two-chamber systems they require precise adherence to the dosage and type of substance, since the use of an unsuitable analogue can lead to compressor failure. Understanding the differences between R134a, R600a and R12 will help you competently build a dialogue with the technician or independently assess the scale of the problem.
You should not ignore the markings on the compressor or the technical sticker located inside the chamber. It is there that accurate information about the type and amount of refrigerantnecessary for a specific model is contained. Ignoring this data when trying to repair it yourself or ordering services can lead to financial losses and further breakdowns of the cooling system.
Main types of refrigerants in Atlant technology
The history of refrigerator production goes back decades, and during this time the chemical composition of the gases used for heat dissipation, changed several times. In Atlant two-chamber models, you can most often find three main types of substances. Each of them has unique physical and chemical properties that determine the design of the entire refrigeration system.
The first and most common in modern models is R134a (tetrafluoroethane). This gas replaced freon R12, which was banned due to its negative impact on the ozone layer. R134a it is non-flammable, non-toxic under normal operating conditions and has excellent refrigeration characteristics. The pressure in the system with this gas is higher than that of its predecessors, which requires more durable tubes and a high-quality compressor.
The second type is R600a (isobutane). It is actively used in the latest generations of Atlant refrigerators due to its high energy efficiency and environmental friendliness. However, this gas has one critical feature: it is flammable. This imposes special requirements on the tightness of the system and the qualifications of the technician carrying out the repair work. The filling volume with isobutane is significantly less than that of other freons.
⚠️ Attention: Never try to open the system yourself if R600a is used in it. Isobutane mixed with air forms an explosive concentration, and any spark from a soldering iron or electrical contact can lead to a fire.
The third type is R12 (dichlorodifluoromethane). Now it can only be found in very old Atlant models produced before the end of the 90s. This freon is no longer produced legally in many countries, and modern craftsmen recommend converting such refrigerators to R134a during major repairs. Old systems with R12 often suffer from corrosion and wear of rubber seals.
How to determine the type of freon by model and year of manufacture
The most reliable way to find out what gas is pumped into your two-chamber Atlant refrigerator is to study the technical documentation or factory stickers. Manufacturers are required to indicate the type and mass of refrigerant. In most cases, this information is duplicated on a metal plate or sticker attached inside the refrigerator compartment.
Pay attention to the serial number and production date. Models produced before 2000 are highly likely to work on R12. Equipment produced between 2000 and 2010 is most often used R134a. The most modern series, especially those with energy consumption class A+ and higher, are often equipped with systems on R600a.
Also, the type of refrigerant can be determined by the compressor. There is always a nameplate with technical information on the motor housing. Look for the inscription Refrigerant or Gas. If you see the marking HFC134a, it means the system contains tetrafluoroethane. The marking R600a or HC600a indicates isobutane.
The gases are colorless and odorless (although odorants are sometimes added to R600a, they cannot be smelled in a closed system). Therefore, relying on documents and stickers is the only sure way.
Below is a table that helps you navigate depending on the series of the refrigerator:
| Series / Production period | Probable type of freon | System features | Repair requirements |
|---|---|---|---|
| Atlant (old models, before 1998) | R12 (Freon-12) | High pressure, thick pipe walls | Requires oil change and filter drier |
| Atlant MHM (2000-2010) | R134a | Medium pressure, synthetic oil | Standard vacuum procedure |
| Atlant No Frost (modern) | R134a or R600a | Complex defrosting system, precise dosage | Electronic gas weighing required |
| Eco series (last 5 years) | R600a | Low pressure, small quantity gas | Prohibition on open flames near the unit |
Signs of a freon leak in a two-chamber system
You can understand that there is a problem with tightness in the system by a number of indirect signs. A two-chamber refrigerator is designed in such a way that if there is a shortage of refrigerant, the freezer chamber stops working first, and the refrigerator compartment continues to cool, but not efficiently enough.
One of the first symptoms is the continuous operation of the compressor. If you notice that the engine is humming nonstop, trying to gain temperature, this is a sure sign lack of refrigerant. The system tries to compensate for the lack of cold by constant circulation, which leads to overheating of the compressor and increased energy consumption.
Another sign is the formation of a “snow coat” or ice in a certain place of the evaporator, or the complete absence of frost on the back wall (in models with a drip system). In systems No Frost the circulation of cold air may stop, and fans will drive warm air through the chambers.
☑️ Leak diagnostics
Visual inspection can also give results. If you move the refrigerator aside and see oily stains on the floor or half of the compartments, this is almost a 100% guarantee of a leak. Freon circulates in the system along with the oil, and the release of gas is accompanied by the release of an oil emulsion.
Refilling process: why accuracy is needed
Refilling an Atlant refrigerator is not just “adding gas.” This is a complex technological process that requires special equipment. For two-chamber models, it is critical to adhere to the weight dosage. An excess or lack of freon disrupts the cycle of condensation and evaporation.
If there is too little R134a or R600ain the system, the compressor will work for wear, not reaching the required temperatures. If you overdo it with the amount of gas, liquid freon can enter the compressor, causing water hammer, which is fatal for the piston group of the engine.
The refueling process always includes a vacuum stage. Before introducing new gas, the technician must remove air and moisture from the circuit. Humidity is the main enemy of the system, as water freezes in the capillary tube, forming an ice plug that blocks circulation.
⚠️ Attention: Using gas cylinders without scales (by eye) is unacceptable. An error of even 10-15 grams can lead to unstable operation of a two-chamber Atlant refrigerator.
Why can’t you mix different freons?
Mixing different types of refrigerants (for example, R12 and R134a) leads to a chemical reaction that forms acid and destroys the compressor windings from the inside. In addition, different gases have different pressures and boiling points, which makes the system impossible to operate.
Replacing freon: when necessary
Unlike oil in a car, freon in the refrigerator has no expiration date and does not require scheduled replacement. If the system is sealed, one volume of gas is enough for the entire service life of the unit - 10, 15 or more years. The need for refilling arises only in the event of a leak or after repairing the system (replacing the compressor, filter-drier, evaporator).
Sometimes owners of old refrigerators decide to convert the system. For example, translation from R12 to R134a. This requires a complete flush of the system, changing the oil to synthetic (polyester) and installing a new filter drier. Old mineral oil is not compatible with new freons.
Is it worth changing freon for the sake of prevention? No, that doesn't make sense. If the refrigerator cools, cycles (turns on and off) and does not make strange sounds, there is no need to touch the refrigerant. Any intervention in a sealed circuit is a risk.
When replacing a compressor in modern Atlant models, it is often recommended to change the type of oil along with freon if a deep modernization is being carried out. However, if you are simply repairing a leak in a working system, the same type of gas is charged as specified by the manufacturer.
Safety and environmental aspects
Modern environmental requirements dictate their own rules. Freons, which destroy the ozone layer, are a thing of the past. But even modern gases require careful handling. R134a When burned, it forms phosgene, a toxic substance, so it is strictly forbidden to heat gas cylinders or tubes with an open fire.
Isobutane R600a, used in many new Atlant models, is heavier than air and accumulates when leaked below, near the floor. In confined spaces this poses a risk of explosion if an ignition source is present. That is why, when repairing such refrigerators, the room must be well ventilated.
Disposal of waste freon should also be carried out by specialists. Simply releasing it into the atmosphere is a violation of environmental standards. Service centers have equipment for collecting and neutralizing refrigerants.
Is it possible to fill the Atlant refrigerator yourself?
Theoretically, it is possible if you have a license, a set of tools (vacuum pump, scales, pressure gauges) and knowledge. In practice, this is extremely difficult and dangerous for a home craftsman, especially considering the flammability of modern refrigerants. An error in dosage will lead to compressor failure.
Why did the Atlant refrigerator stop freezing after a power outage?
If after a long power outage the refrigerator stopped freezing, this may not be related to freon. The compressor may have burned out or the start-up relay has failed. However, if you hear that the engine is running, but there is no cold, there is likely a leak or blockage of the capillary tube.
How often should you change the filter drier when refueling?
The filter drier is a disposable element. Whenever the circuit is opened (for soldering, replacing a compressor, or repairing a leak), it must be replaced with a new one. The old filter is already saturated with moisture and will not be able to protect the system from ice jam.
Does the type of freon affect electricity consumption?
Yes, it does. Modern refrigerants such as R600a have better heat transfer, allowing the compressor to run for less time and consume less energy. Switching to more modern gases (when upgrading) can theoretically reduce electricity consumption.
Where can I find accurate gas information for my model?
Look for a technical sticker inside the refrigerator compartment (usually on the side wall or on the ceiling). The type of refrigerant (Refrigerant) and its mass in grams are indicated there. This information can also be found in the operating instructions in the "Technical Specifications" section.