The question of which compressor is installed in the refrigerator Biryusaoften arises among equipment owners when there is extraneous noise, insufficient cooling or a complete stop of the unit. The Siberian plant Biryusa has been using various types of engines in its models for decades, due to changes in supply chains and technological requirements of the time. In modern lines and models of previous years, you can find both reliable piston units and quieter inverter systems.
Understanding the markings and technical characteristics of the installed motor is critical for proper repairs. If you are planning on diagnosing yourself or ordering spare parts, you need to accurately identify the type of supercharger, since refrigerant parameters and starting current can vary significantly. Incorrect selection of a component can lead to rapid failure of not only the new compressor, but also the entire refrigeration system.
In this article we will look in detail at which manufacturers complete Biryusa refrigerators, how to distinguish one type of engine from another by appearance and markings, and also consider the nuances of replacement. You will find out why in some models there is Danish Danfoss, in others - Belarusian Atlant, and what is hidden behind the abbreviation Secop.
The main manufacturers of compressors for Biryusa equipment
Plant Biryusa does not produce its own compressors, but purchases them from specialized partner factories. Throughout the history of the production of refrigerators under this brand, several key suppliers have changed. The most common option for classic two-chamber models for many years were units produced by the company Atlant (Republic of Belarus). These engines have proven themselves as repairable and affordable solutions.
In more modern and energy-efficient models, especially in lines with the system No Frost, compressors are often used Danfoss (now Secop). This is Danish technology, characterized by high reliability and low vibration levels. Also, in individual batches or specific small-volume models, there may be Chinese analogues or motors from other European brands, but their market share is much smaller.
⚠️ Attention: The markings on the compressor itself and the data in the refrigerator passport may not match if the engine was previously replaced. Always check the actual condition of the equipment visually.
When purchasing a used refrigerator or spare parts for an old model, it is important to consider that the plant may have changed suppliers depending on the year of manufacture. For example, in 2010 models it is more common Atlant, while in the 2020s solutions from Secop or their licensed copies dominate. This directly affects the availability of starting relays and filter-driers.
Technical characteristics and types of engines
Compressors installed in Biryusa refrigerators are divided into two main types according to the operating principle: piston and inverter. The vast majority of models in operation right now are equipped with piston compressors. They work on the principle of reciprocating piston movement, compressing the refrigerant and directing it to the condenser.
Piston motors can be single-piston or double-piston. In dual-motor refrigerators (where one motor is for the freezer, the other for the refrigerator compartment) less powerful units are usually used. The power of such motors varies from 90 to 140 W, depending on the volume of the chambers and the required performance. An important parameter is also the type of refrigerant used: old models run on R12 or R134a, and new ones switch to R600a (isobutane).
Inverter compressors, which are found in top Biryusa models, work differently. They do not turn off completely, but smoothly regulate the shaft rotation speed, maintaining the set temperature. This ensures energy efficiency class A++ and extremely low noise levels. However, diagnostics of such systems requires specialized equipment and knowledge of electronics.
Below is a table that helps compare the type of refrigerant and brands of compressors found in Biryusa refrigerators:
| Compressor brand | Refrigerant type | Characteristic noise | Brand country |
|---|---|---|---|
| Atlant (CTH/CTX series) | R134a / R600a | Medium, booming | Belarus |
| Danfoss / Secop (BD/SC series) | R134a / R600a | Low, quiet | Denmark/Germany |
| Embraco (rarely) | R134a | Medium | Brazil/Italy |
| GMCC (Chinese analogues) | R600a | High | China |
How to determine the compressor model by marking
To accurately identify the engine, it is not enough to know only the model of the refrigerator. You need to get to the back wall of the unit and find the metal casing that houses the motor. The top of this casing is either affixed with an information tag or laser marked. This is where all the necessary information for selecting an analogue is contained.
Look for a line starting with a letter designation, for example, H, T or L, followed by numbers. Compressors Atlant marking often looks like CTH-110 or CK-100. U Danfoss and Secop codes can be more complex, for example, BD35F or SC10CL. It is important to rewrite this data completely, including the letters at the end, as they indicate the type of refrigerant and supply voltage.
Deciphering Atlant codes
the letter "H" at the beginning often indicates the use of R134a refrigerant, and the absence of a letter or other designations may indicate R600a. The numbers indicate the volume of the cylinder in cubic centimeters.
Pay attention to the supply voltage. In Russia, the standard is 220-240 Volts at a frequency of 50 Hz. However, when ordering spare parts from foreign catalogs, you may accidentally purchase a 115 Volt motor (American standard) or with a different type of start. Installing such a motor in a 220V network will lead to instantaneous combustion of the windings.
Diagnostics of compressor faults
Before making a decision to replace, you need to make sure that the problem lies precisely in the compressor, and not in the control system or freon leak. One of the first signs of a malfunction is when the refrigerator turns on, the motor hums for 5-10 seconds, then a click is heard and it goes silent. After some time, the cycle repeats. This is a classic symptom thermal or a malfunction of the start relay.
If the compressor runs continuously without turning off for hours, and the temperature in the chambers does not drop to normal, two options are possible: either a refrigerant leak has occurred, or the compressor has lost its power. performance (piston group wear). You can check the operation of the motor by touching its housing (be careful, it may be hot). If it is hot to the point where it is impossible to hold your hand, this is a sign of overload or breakdown.
⚠️ Attention: Do not try to “revive” a frozen compressor by hitting a hammer or connecting directly to the network without a starting device. This may result in a short circuit and fire.
It is also worth listening to the sounds. Metallic clanging, knocking or whistling sounds inside the compressor housing indicate mechanical failure of internal parts. In this case, repair is impossible; only a complete replacement of the unit is required. A quiet hum, which turns into vibration of the refrigerator body, may indicate wear of the rubber shock absorbers on which the motor is suspended inside the casing.
The process of replacing the compressor with your own hands
Replacing the compressor in the Biryusa refrigerator is a technically complex procedure that requires special tools. You will need a gas torch, pipe cutter, flaring machine, vacuum pump, gauge station and scale for refrigerant charging. Simply “unscrewing and screwing” will not work, since the system is sealed and filled with gas under pressure.
The first step is always removing the old refrigerant and dismantling the faulty motor. The copper circuit pipes are cut, the old compressor is unsoldered. A new unit is installed in its place. It is critically important not to overheat the tubes, so as not to damage the internal insulation or other elements of the system. After installing the new motor, the connections are soldered using solder and flux.
☑️ Stages of replacing the compressor
After mechanical installation, a mandatory step is vacuuming. The system must be completely purged of air and moisture using a vacuum pump. The presence of moisture inside the circuit will lead to the formation of acid and rapid failure of the compressor. Only after creating a deep vacuum is refilling with the exact amount of refrigerant indicated on the refrigerator tag.
Nuances of choosing an analogue and compatibility
When looking for a replacement for the original Biryusa compressor, the question often arises: is it possible to supply an analogue? In most cases, it is possible, but subject to a number of conditions. The power of the replacement motor must be equal to or slightly exceed the power of the original (exceeding up to 10% is acceptable). Installing a less powerful engine will result in wear and tear and insufficient cooling.
Particular attention should be paid to the overall dimensions. Compressors from different manufacturers may have different heights, widths and nozzle locations. If the new motor is taller, it may not fit into the casing or touch the walls of the refrigerator, creating vibration. It is also important to check the diameter and location mounting studs, although often they have to be overcooked or use adapter plates.
Modern Biryusa refrigerators with an electronic control system can be sensitive to the type of starting current. If you change a conventional compressor to an inverter one (or vice versa), you will need to completely redo the electrical circuit, which is practically impossible at home. Therefore, change “one for one” according to the type of construction.
The cost of repairs and feasibility
The financial side of the issue also plays a role important role. The cost of a new compressor for a Biryusa refrigerator varies from 4 to 10 thousand rubles, depending on the brand and power. However, this is only part of the cost. The work of a master, including visiting, dismantling, soldering, vacuuming and refueling, usually costs from 5 to 8 thousand rubles. Thus, a complete repair can cost 10-18 thousand rubles.
For old models of Biryusa refrigerators, which are more than 10-12 years old, such an amount may not be appropriate. Wear of thermal insulation, corrosion of the housing and the condition of other components may not justify the investment. At the same time, for modern models with a high-quality case and intact internal plastic, replacing the compressor extends the life of the equipment by another 5-7 years, which is economically beneficial compared to purchasing a new unit.
⚠️ Attention: Prices for services and spare parts may change. Before starting work, check the current cost of components from official dealers or specialized spare parts stores.
If you decide to save money and buy a used compressor, remember the risks. The service life of such engines is unpredictable, and they are almost never guaranteed. It is better to purchase a new, albeit Chinese analogue, but with a seller’s guarantee, than to put a “pig in a poke.”
Frequently asked questions (FAQ)
Is it possible to replace an Atlant compressor with a Danfoss in a Biryusa refrigerator?
Technically, this is possible if they match dimensions, voltage and type of refrigerant. However, changes to the electrical circuit (replacing the start relay) and re-welding of the mounting tabs may be required. A simple physical connection “to the connector” may not be enough.
Why does a new compressor heat up to 80-90 degrees?
For piston compressors, especially those running on R134a refrigerant, a housing temperature of 70-90 degrees in operating mode is normal. They are air cooled. The alarm should be sounded if the temperature exceeds 100 degrees or the motor turns off due to overheating.
How long does the compressor last in the Biryusa refrigerator?
The average service life of a high-quality piston compressor is 10-12 years. With careful operation and stable mains voltage, it can last up to 15-20 years. Inverter models claim a service life of up to 20 years, but they are more sensitive to power surges.
Do I need to change the filter drier when replacing the compressor?
Yes, this is a mandatory requirement. The filter drier is a disposable element. When the circuit is opened, it is saturated with moisture from the air, and if it is not replaced, moisture will enter the system, causing blockage of the capillary with ice or corrosion.