Refrigeration equipment from the Belarusian plant Atlant deservedly enjoys the trust of consumers due to its reliability and maintainability. Understanding exactly how the unit functions allows you not only to use its capabilities effectively, but also to diagnose faults in a timely manner. The work is based on the continuous circulation of the refrigerant, which transfers heat from the internal chamber to the external environment.
The cooling process does not arise out of nowhere, but is based on the laws of thermodynamics and the properties of substances to change their state of aggregation at a certain pressure. Refrigerantcirculating in the system is the main one a carrier of thermal energy, evaporating inside the housing and condensing outside. It is this cycle that ensures the preservation of the freshness of products.
Different models, be they classic two-chamber versions or modern systems No Frost, use a single physical base, but differ in the way the cold is distributed. Knowledge of these nuances will help you correctly set the temperature regime and avoid typical operating errors, extending the service life of equipment.
Physical basis of cooling: the Carnot cycle in everyday life
All the magic of cooling is based on the ability of a liquid to absorb a huge amount of heat when turning into a gaseous state. The refrigerator circuit Atlant uses a special freon gas, which boils at very low temperatures, 0°C. When the liquid refrigerant enters the evaporator, it begins to actively boil, taking heat from the products.
However, simply evaporating the gas is not enough - it must be turned into liquid again for the cycle to repeat. To do this, compressor compresses the heated steam, increasing its pressure and temperature, after which the hot gas is sent to the condenser (grid at the back), where it releases heat into the room and condenses back into liquid.
It is important to understand that the refrigerator does not “produce cold”, but constantly pumps heat from the chamber to the outside. If you notice that the side walls or the grille at the back are hotter than usual, this is the normal operating mode of the heat removal system.
⚠️ Attention: Installing the refrigerator close to the wall disrupts the natural convection of air around the condenser, which can lead to overheating of the compressor and increased energy consumption.
The effectiveness of this process directly depends on tightness of the circuit and quality of thermal insulation. Modern models Atlant equipped with improved seals and polyurethane foam insulation that minimizes cold loss.
Design of a compressor group: the heart of the system
The main engine of the system is compressorwhich creates the necessary pressure for the circulation of the refrigerant. Refrigerators Atlant most often use sealed piston units, where the motor and compressor part are located in a single housing.
When the power is turned on, the electric motor windings create a magnetic field that rotates the rotor. This movement through the connecting rod and piston group is converted into the translational movement of the pistons, which compress the gaseous freon. The output pressure can reach several atmospheres.
- 🔹 Starting relay —supplies an initial impulse and turns off the starting winding after a set of revolutions.
- 🔹 Thermal relay —opens the circuit in case of critical overheating or current overload, protecting the engine.
- 🔹 Capacitor - smooths out voltage surges and helps generate torque.
Modern inverter models work on a different principle, smoothly regulating the speed of rotation of the motor, which makes them quieter and more economical than classic options with constant switching on and switching off.
Heat removal system: the role of the condenser
After compression in the compressor, the refrigerant temperature reaches 60-80°C. In this state, it enters condenser a long winding tube, often made in the form of a black grille on the back wall or built into the side panels of the case.
The key heat exchange process takes place here: hot gas gives off energy to the surrounding air. Room ventilation plays a critical role here. If the room is too hot or the air circulation is impaired, the efficiency of condensation drops and the compressor is forced to work longer.
Some models Atlant use forced airflow of the condenser with an additional fan, which is typical for built-in appliances or models with a large volume of chambers.
| Element | Function | Normal temperature | Malfunction symptom |
|---|---|---|---|
| Compressor | Gas compression | Up to 90°C (body) | Does not turn on or hums |
| Condenser | Cooling and liquefaction | 40-50°C | Cold when the engine is running |
| Evaporator | Boiling and cooling | From -20°C to 0°C | Freezing unevenly |
| Filter drier | Moisture removal | Room | Frost at the inlet/outlet |
How the drip defrosting system works
Most classic refrigerators Atlant equipped the so-called “crying” system. On the back wall of the refrigerator compartment there is an evaporator hidden behind a plastic panel. It is this that cools the air inside.
The moisture contained in the food and air condenses on the cold back wall and flows down, forming drops - hence the name. Periodically, when the compressor is turned off by a signal thermostat, the wall thaws, and the accumulated water goes through the drainage hole into a special tray above the compressor, where it evaporates.
This process is fully automated and does not require user intervention, except for periodic cleaning of the drainage channel. It is important to ensure that food does not fit tightly to the back wall, otherwise moisture will freeze there, forming an ice coat.
⚠️ Attention: If you notice a puddle of water inside the refrigerator compartment or on the floor underneath, check the drainage hole on the back wall - it could be clogged with crumbs or ice.
In the freezer The chamber usually does not have such systems, and defrosting has to be done manually 1-2 times a year, completely turning off the device.
Why is gurgling sometimes heard?
The sounds of liquid flowing in the tubes after the compressor stops is normal. The refrigerant is redistributed throughout the system under the influence of gravity.
The principle of operation of the No Frost system
Technology No Frost (no frost) radically changes the approach to cooling. In such models Atlant the evaporator is hidden in a special compartment, usually behind the back wall of the freezer, and does not come into direct contact with the products.
Cooling occurs due to forced air circulation. A special fan drives air masses through a cold evaporator, and then directs them into the chambers through an air duct system. This ensures uniform temperature in all corners of the refrigerator.
- ❄️ Automatic defrosting —a built-in timer or electronic unit periodically turns on the heating element (heating element) of the evaporator.
- 💨 Ventilation —a constant flow of air prevents the formation stagnant zones with high humidity.
- 🌡️ Precise control —sensors record the slightest changes in temperature and adjust the operation of the system.
Water from melted ice also flows into the drainage tray and evaporates. The user never has to chip off ice in the freezer, since it simply does not have time to form in visible places.
☑️ Checking the No Frost system
Control and electronics: smart control
Modern refrigerators Atlant are controlled by complex electronic modules that replace mechanical thermostats. Electronic control unit reads temperature sensors at different points in the chambers and decides whether to turn on the compressor, fans or defrost heating elements.
If in mechanical models the temperature was regulated by turning the knob from 1 to 7, then in electronic systems you set exact degrees (for example, +4°C). The control unit also monitors the operating time of the compressor, preventing it from quickly restarting, which protects the mechanism from wear.
If a malfunction occurs, such as a door leak or sensor failure, the system may sound an alarm or display an error code on the display. This greatly simplifies diagnostics for the technician.
⚠️ Attention: Power surges can damage sensitive electronics. It is recommended to use a surge protector or voltage stabilizer, especially in houses with old wiring.
Some advanced models have a “Vacation” function, which switches the refrigerator compartment to an economical mode, leaving the freezer working.
Frequently asked questions about the operation of Atlant refrigerators
Why does the Atlant refrigerator buzz or click loudly?
The hum can be caused by vibration of the compressor, improper installation (the legs are not adjusted) or the pipes touching the body. The clicking sound is normal operation of the thermal relay or solenoid valve. If the sound has become metallic or very loud, diagnostics of the compressor is required.
How often should you defrost a refrigerator with a drip system?
Although the refrigerator compartment defrosts itself, it is recommended to defrost the freezer completely 1-2 times a year. The accumulation of ice more than 5 mm thick impairs heat transfer and increases energy consumption.
Is it possible to turn on the Atlant refrigerator immediately after transportation?
If the refrigerator was transported in a vertical position, it is enough to wait 2-3 hours. If it was tilted more than 40 degrees or transported lying down, you must wait at least 12-24 hours for the oil to flow into the compressor.
What does the flashing temperature indicator mean?
Flashing usually indicates an increase in the temperature in the chamber above the permissible limit. Check if the door is tightly closed, if you have loaded a lot of warm food and if the compressor is working.