The choice of refrigeration equipment for the kitchen is often associated with many technical issues, among which one of the key ones is the number of compressors in the unit. It is this unit that is responsible for circulating the refrigerant and maintaining the required temperature in the chambers, determining the reliability and functionality of the entire system. In the model range of the brand Atlant, which has occupied a leading position in the household appliances market for decades, you can find both classic solutions with one motor and more complex systems with two independent circuits.
Understanding how many compressors are installed in a particular refrigerator Atlantallows the consumer not only to correctly assess energy consumption and noise device, but also to predict the possible costs of its maintenance in the future. Modern production technologies make it possible to create highly efficient single-compressor systems, which in their characteristics are not much inferior to more bulky analogues, but the difference in design remains fundamental. In this article we will analyze in detail the differences, advantages and operating features of various configurations.
It is worth noting that the number of motors directly affects the cost of the device and the complexity of its internal structure. If you are planning to purchase new equipment or are faced with the need to diagnose a malfunction, knowledge of the basic principles of operation of the compressor unit will be invaluable to you. Next, we will look in detail at how different types of refrigerators work and what you should pay attention to when choosing.
Single-compressor models: design and principle of operation
Most refrigerators Atlantpresented in the budget and mid-price segment are equipped with one compressor. In such a system one motor responsible for cooling both the refrigeration and freezer compartments. The refrigerant circulates through a single circuit, where the flow is distributed through special valves or switches, directing the cold to where it is needed at the moment.
The main feature of this design is the sequential or parallel operation of the compartments, depending on the thermostat settings. When the temperature in one of the chambers rises above the set point, the compressor turns on and begins to pump refrigerant. In simpler models without a system No Frost this can lead to the fact that when food is intensively frozen in the freezer, the refrigerator compartment will also be very cold.
However, modern single-compressor models are often equipped with solenoid valves that allow independent control of the cold supply. This solution significantly increases operating efficiency and allows one to achieve temperature conditions close to those of their dual-compressor counterparts. The main advantages of such refrigerators are:
- ⚡ Lower purchase cost compared to dual-engine counterparts.
- 🔇 Lower noise level, since only one engine is running.
- 🔌 Reduced energy consumption due to the use of one electric motor.
- 🛠️ Simplicity of design, which makes it easier to find spare parts and repairs.
⚠️ Attention: In single-compressor models without an independent circuit control system, defrosting the freezer compartment is impossible without completely turning off the refrigerator, which will lead to defrosting of the main compartment.
It is important to understand that the service life of one compressor during intensive use may be lower than that of a system with two motors, since it has to work more often and with a greater load. However, for a standard family of 3-4 people, the power of modern units Atlant is quite sufficient.
Two-compressor systems: independence and efficiency
Refrigerators Atlant with two compressors are a more complex technical design, where the cooling of the refrigeration One motor is responsible for the chamber, and the second one is responsible for the freezer. This scheme is called separate cooling system and allows you to independently regulate the temperature in each compartment, which is a key advantage for food storage.
The presence of two independent circuits means that you can completely turn off the freezer while leaving the refrigerator running, or vice versa. This is especially true in the summer or during long trips, when there are few stocks of frozen food, and fresh ones have to be used constantly. In addition, such a system quickly restores the temperature regime after loading a large number of products.
The main advantages of two-compressor models include:
- 🌡️ Complete independence of temperature conditions in different chambers.
- 🚫 No mixing of odors between the freezer and refrigerator.
- ⏱️ Faster freezing and restoration of cold after opening the doors.
- 🛑 Possibility to turn off one of the chambers without losing the functionality of the other.
Despite the obvious advantages, such systems also have their own characteristics. Firstly, they are more expensive to purchase. Secondly, the presence of two operating engines theoretically doubles the number of potential points of failure, although the reliability of compressors Atlant traditionally is high. It is also worth considering that such models may be a little noisier due to the presence of two vibrating elements, although modern noise insulation technologies reduce this effect to a minimum.
One Compressor Two Temperatures Technology (OCTT)
The technology One Compressor Two Temperaturesthat the company is actively implementing deserves special attention. Atlant into their single-compressor models. This engineering solution allows a refrigerator with one motor to work almost like a two-compressor one. The secret lies in the use of a special solenoid valve, which shuts off the supply of refrigerant to one of the chambers when the desired temperature is reached.
Thanks to the system OCTT, the user is able to independently set the temperature in the refrigerator and freezer compartments. Moreover, an independent defrosting function has been implemented: you can turn off the freezer while the refrigerator continues to operate normally. This is achieved by shutting off the freezer circuit while the compressor continues to cool the main compartment.
How does the OCTT valve work?
The solenoid valve is installed at the outlet of the condenser. When the temperature in one of the chambers reaches the set value, the controller sends a signal to the valve, and it blocks the path of freon to the evaporator of this chamber, directing the entire flow to another circuit or stopping circulation if the goal is achieved in both compartments.
This solution has become a golden mean for consumers who want to get the functionality of a two-compressor model, but are not ready to overpay or put up with increased energy consumption. Models marked OCTT often have additional indices in their names indicating the presence of this option.
Comparative table of characteristics
To make it easier for you to make your choice or understand what type of equipment is installed in your home, we have prepared a comparative table of the main characteristics. It demonstrates the difference in parameters between single-compressor and two-compressor models of the brand Atlant.
| Characteristics | One compressor (Classic) | One compressor (OCTT) | Two compressors |
|---|---|---|---|
| Independent temperature control | No (usually) | Yes | Yes |
| Separate defrosting of chambers | Impossible | Possible | Possible |
| Noise level | Low | Low | Average |
| Energy consumption | Minimum | Low | Above average |
| Equipment cost | Budget | Average | High |
The table shows that technology has stepped far forward, and the presence of one compressor no longer means primitive control. However, for professional storage of large volumes of food or specific requirements for freezing, dual-circuit systems remain the uncontested leader.
How to determine the number of compressors visually
If you already have a refrigerator Atlant, but you don’t know how many compressors it has, it’s easy to find out without disassembling the unit. The easiest way is to look at the back wall of the device. In the lower part, usually at the back and bottom, there is a compressor compartment, closed with a metal or plastic casing.
You need to remove the protective cover (usually it is held on by latches or several screws) and inspect the contents. One compressor it will look like black or gray metal "pear" with tubes and wires. If you see two such elements located next to or above each other, then you have a two-compressor model.
Also, the number of motors is often indicated in the technical documentation or on a sticker with characteristics, which is located inside the refrigerator compartment or on the back wall of the case. Look for the line "Number of compressors" or "Number of compressors". In the model range Atlant the presence of two compressors is often reflected in the model article, where the corresponding digital or letter designations may be present, but visual inspection remains the most reliable method.
When inspecting, pay attention to the condition of the tubes and vibration. If one motor is running, the vibration will come from one point. If there are two, both can vibrate, or they can turn on in turn, which is also noticeable by ear and tactile sensations when touching the case.
Diagnostics of faults and repair features
Understanding how many compressors are in your refrigerator is critically important when diagnosing breakdowns. If in a two-compressor model only the freezer compartment has stopped cooling, but the refrigerator is working properly, the problem is most likely localized in the freezer circuit or in the second compressor. In a single-compressor model, failure of one unit leads to loss of cold in the entire unit.
Frequent problems with compressors are:
- 🔊 The appearance of a loud hum, knocking or clicking during operation.
- 🔥 Strong heating of the motor housing (above 90 degrees).
- 🚫 Start failure (the start relay clicks, but the motor does not start).
- ❄️ Insufficient cooling during continuous operation of the engine.
☑️ Compressor diagnostics
Compressor repair at home, as a rule, is not carried out due to the need for specialized equipment for working with refrigerant and evacuation of the system. Usually produced replacing the unit entirely. In two-compressor models, this may be more expensive, since the cost of the unit itself is higher, and access to it may be difficult due to the design.
⚠️ Attention: Attempts to independently repair the compressor or replace the starting relay without skills in working with electricity and refrigerants can lead to electric shock or depressurization of the system. Entrust repairs only to certified specialists.
It is also worth noting that in some cases the problem may lie not in the compressor itself, but in the start relay or thermostat. Therefore, before replacing an expensive unit, it is necessary to carry out competent diagnostics.
Frequently asked questions (FAQ)
Is it possible to turn off the freezer in a single-compressor Atlant refrigerator?
In classic models without OCTT technology - no, turning off the freezer will defrost the entire refrigerator. In models with an OCTT system or in two-compressor refrigerators, this function is provided and implemented through the control panel or a separate switch.
Why does a two-compressor refrigerator consume more energy?
Two compressors mean two electric motors. Even if they work in turns, the total energy consumption is usually higher than that of one optimized motor, although modern inverter technologies make it possible to minimize this difference.
Is a two-compressor Atlant noisier than one?
The noise level depends not only on the number of motors, but also on the quality of their performance and the sound insulation of the housing. However, physically, the presence of two sources of vibration can create a more saturated low-frequency background, although modern models Atlant operate quite quietly.
What is the service life of Atlant compressors?
With proper operation and compliance with installation conditions (ventilation, no direct sunlight) compressors Atlant serve on average 10-15 years or more. Regular defrosting (for drip systems) and cleaning the condenser at the back prolongs the life of the motor.
Does the number of compressors affect the freezing speed?
Yes, two-compressor models and models with OCTT usually freeze food faster, since they can direct all the refrigeration power exclusively to the freezer compartment, without sharing the resource with refrigeration compartment.