The choice of reliable household appliances often comes down to analyzing its “heart” - the compressor. It is this unit that determines how long your refrigerator will last, how quietly it will operate and how much electricity it will consume. The brand Atlant has been occupying a leading position in the CIS market for many years, and one of the main questions of buyers remains: what kind of motor is installed inside?
Historically, the Minsk plant used its own developments, however, at different periods of time and for different product lines, units were purchased from European partners. Understanding the type of installed compressor critically important when purchasing, as this directly affects maintainability and cost of maintenance in the future. In this article we will analyze in detail the evolution of equipment for Atlant refrigerators.
The modern market offers many modifications, and it is very easy to get confused in them. Inverter systems classical solutions are gradually replacing them, but the good old piston models are still in service. You need to clearly know the differences so as not to overpay for functions that you do not need, or vice versa - not to buy an outdated model at the price of a new product.
The evolution of Atlant compressor equipment
At the dawn of its existence, when the brand was just being formed as an independent unit after the collapse of the USSR, the plant was almost completely relied on domestic production. The first models were equipped with heavy, but extremely reliable units developed in Soviet research institutes. Technological base that time involved the use of R12 freon and mineral oil, which made the equipment “immortal”, but noisy and energy-consuming.
Over time, Especially in the early 2000s, active modernization of production lines began. The plant began to introduce more environmentally friendly refrigerants and switch to new generation compressors of its own production. These motors already had a different piston group design and required synthetic oils. Sealed blocks They became more compact, and their efficiency increased noticeably.
⚠️ Attention: If you are planning to replace the compressor in an old model (manufactured before 2010), you absolutely cannot install a modern motor without replacing the capillary tube and filter-drier, since different types of oils can react and coke the system.
It is important to note that in certain periods, when its own production cycle did not keep up with demand or specific characteristics were required, Atlant purchased batches of compressors from third-party manufacturers. This made it possible to flexibly manage the assortment and offer customers different price categories. Identification of the manufacturer in such cases, it is possible only by the nameplate on the unit itself.
Own compressors of the Atlant plant
Today, the lion's share of refrigerators leaving the assembly line in Minsk, is equipped with motors of its own production. The Atlant plant (Atlant OJSC) is one of the few in the world that produces a full cycle of refrigeration equipment, including the heart of the system. These compressors are marked with the appropriate logo and have a specific coding system.
The majority of modern models are equipped piston compressors with a crank mechanism. They have established themselves as “workhorses”: simple in design, understandable to any craftsman and affordable for the price of spare parts. Depending on the series, they can be single-piston or double-piston, which affects the level of vibration and noise.
- 🔧 Maintainability: High availability of spare parts and service centers throughout the CIS.
- 💰 Price: The cost of replacing your own Atlant compressor is usually lower than imported analogues.
- 🔊 Noisiness: Modern models are quieter than their Soviet counterparts, but may be inferior in silence to European brands.
Special attention It is worth paying attention to series CN i N in the marking of your own motors. They are designed to work with R600a (isobutane) refrigerant, which is explosive but environmentally friendly and efficient. Working with such systems requires the technician to have special equipment for vacuuming and filling, as well as adherence to strict safety measures.
Imported components: Secop and Danfoss
In some lines, especially in models of the middle and high price segment of previous years, you can find Danish-made compressors. Historically, these were motors under the brand Danfoss. However, a few years ago the Danfoss refrigeration division was sold to Secop. Therefore, if you see the inscription Secop on the motor in the Atlant refrigerator, you should know that this is a heritage of Danish technology.
These units are famous for their reliability and low noise level. Structurally, they are often made in the form of a “glass”, where all components are suspended on springs inside the housing, which dampens vibrations. Build quality such motors are traditionally high, which makes them desirable for those who are looking for silence in the kitchen.
However, there is also a flip side to the coin. Imported compressors installed in Atlant equipment may be more difficult to maintain. They often have non-standard mounting locations or require specific starting relays. Replacing such a motor with an analogue from another manufacturer (even from the same Secop) may require alteration of pipelines or electrical parts.
What is the difference between Danfoss and Secop?
Technically, this is the same technology. After the acquisition of the Danfoss refrigeration business by Secop, the products simply received a new brand. If you have an old Danfoss, you need to look for compatible Secop models by checking the cross-number table.
It is also worth mentioning that other brands could be found in the premium series, such as Embraco (now owned by Nidec) or Tecumseh. But Atlant still focused on the “own production + Secop” combination. When buying used equipment, be sure to check the sticker on the motor.
Inverter technologies in new models
The most modern trend, which has reached the mass market, is inverter compressors. Unlike the classic ones, which operate on the “on-off” principle, inverter motor smoothly regulates its power. It does not stop completely, but only slows down, maintaining the set temperature.
Atlant refrigerators with inverter compressors (often series No Frost with two or three chambers) have a number of advantages. They operate much quieter, since there are no constant relay clicks and inrush currents. In addition, the absence of sharp start cycles extends the service life of mechanical parts.
However, there are also nuances. The inverter control board is a complex electronic unit that is sensitive to voltage changes in the network. If electricity “jumps” in your home, such a refrigerator definitely needs a stabilizer. Repairing an inverter compressor or its board at home is practically impossible and requires expensive equipment.
- ⚡ Efficiency: Electricity consumption can be lower by 20-30% compared to the classic ones.
- 🤫 Silence: The noise level often does not exceed 35-38 dB, which comparable to a whisper.
- 📉 Stability: The temperature in the chambers fluctuates minimally, which is ideal for storing food.
How to determine the type and manufacturer of the compressor
If you want to find out what exactly is in your refrigerator, you do not have to call a technician. Just look into the technical compartment. For most Atlant models, the compressor is located in a niche in the lower rear part of the housing. You need to remove the protective plastic cover (usually it is held on by latches or a couple of screws).
There must be a sticker on the metal body of the motor (cylindrical “tank”). It contains everything technical information: model, voltage, type of refrigerant, production date and, most importantly, the manufacturer’s logo. If the sticker is worn out or missing, you can rely on the appearance and characteristic sound of operation, but this is less reliable.
Information can also be found in the product passport or on the main sticker inside the refrigerator compartment (usually on the side wall). The type of refrigerant and power may be indicated there, which indirectly indicates the type of compressor. For example, a power of about 100-120 W often indicates a classic piston motor, and lower values with high efficiency indicate an inverter.
☑️ Compressor diagnostics
Comparative table of characteristics
To make it easier for you to navigate the variety of technical solutions, we have prepared a summary table. It will help you quickly compare the main parameters of different types of motors used in Atlant technology.
| Parameter | Own Atlant | Secop (Danfoss) | Inverter |
|---|---|---|---|
| Start type | Start relay (PTC) | Start relay / Inverter | Frequency converter |
| Noise level | Medium (40-42 dB) | Low (36-39 dB) | Very low (up to 35 dB) |
| Operating life | 7-10 years | 10-12 years | 10-15 years |
| Replacement cost | Low | Medium / High | High |
The table shows that the choice often depends on the budget and priorities. If you need a “workhorse” for a summer house or a rented apartment, your own Atlant compressor will be an excellent choice. If you value silence and place the refrigerator in the kitchen-living room, it is worth considering models with Secop or an inverter.
Frequent problems and their solutions
Despite their reliability, compressors can fail. The most common problem with classic motors is the failure of the starting relay. This is a small part (often black) that fits over the contacts of the compressor. If the refrigerator hums but does not start, or clicks and goes silent, in 80% of cases the relay is to blame.
A more serious problem is the windings or wedge of the piston group. In this case, the motor may become very hot, knock out the machine in the dashboard, or simply remain silent. Repair of the compressor hardware itself (rewinding, piston replacement) is not carried out at home; a complete replacement of the unit is required. turn-to-turn short circuit windings or wedge of the piston group. In this case, the motor may become very hot, knock out the machine in the dashboard, or simply remain silent. Repairing the compressor hardware itself (rewinding, replacing the piston) cannot be done at home; a complete replacement of the unit is required.
⚠️ Attention: If you hear a metallic knock or clanging inside the compressor during operation, immediately disconnect the refrigerator from the network. Operation in this mode will lead to complete destruction of the mechanism and contamination of the system with metal shavings, which will make repairs economically unfeasible.
It is also worth mentioning the problem of overheating. If the refrigerator is located close to the wall, or in a niche where air does not flow, the compressor may be overloaded. Make sure that the gap between the back of the refrigerator and the wall is at least 5-7 cm for normal air circulation.
Questions and answers (FAQ)
Is it possible to replace an Atlant compressor with an imported analogue?
Theoretically, it is possible if the overall dimensions, power and type are the same refrigerant. However, changes to tubing soldering and electrical circuitry are often required. It is easier and more reliable to install the original or a direct analogue according to the compatibility catalog.
Why is the new Atlant refrigerator loud?
New compressors require running-in (about 2-3 weeks). Also check that the refrigerator pipes are not touching the wall or furniture. If the noise does not go away, it may be a feature of a particular model or a defect.
What do the letters on the compressor nameplate mean (for example, NK or NB)?
This is a classification based on the type of refrigerant and boiling point. NK - for R600a (low temperature), LBP - Low Back Pressure. When replacing, it is important to select a compressor with the same letter marking.
How much does it cost to replace a compressor in the service?
The price consists of the cost of the unit itself and the work of the technician. For Atlant's own models it is more budget-friendly, for imported Secop it is more expensive. The exact amount will be announced only after diagnosing your model.
Is the inverter compressor humming?
The inverter operates almost silently, but can produce a low-frequency hum or whistle at high speeds. This is fine. However, it should not make a clanging or knocking sound.