Refrigeration equipment from the Belarusian plant Atlant is deservedly popular due to its reliability and unpretentiousness, however, even the highest quality equipment requires correct initial setup for effective operation. Many owners are faced with a situation where food in the main chamber freezes or, conversely, quickly deteriorates, not suspecting that the problem lies in incorrect temperature control. Understanding the principles of operation thermostat will allow you not only to extend the service life of products, but also to significantly save on electricity.
In this article we will analyze in detail the process of adjusting temperature conditions for various models, including two-chamber systems with mechanical control and modern units with electronic control. You will learn to correctly interpret the position of the regulator and understand why the numbers on the scale do not always correspond to degrees Celsius. Proper setup refrigeration circuit is the first step to comfortable operation of your household appliances.
The principle of operation of a mechanical thermostat
Most models Atlant use a mechanical thermostat, which is a simple but effective device that opens and closes an electrical circuit depending on the temperature in the chamber. Inside the device there is a sensitive element - a bellows filled with gas or liquid, which reacts to changes in thermal conditions and transmits force to the contacts. When the temperature rises above the set value, the contacts close, starting compressor, and when the lower threshold is reached, they open, stopping the cooling.
It is important to understand that the regulator knob does not set a specific temperature in degrees, but only sets the threshold for contact activation. The scale from 1 to 7 (or from Min to Max) indicates the intensity of the refrigeration unit, where a lower number corresponds to a higher temperature in the chamber. If you set the knob to minimum, the compressor will turn on less often, and if to maximum, it will work almost without interruption, which can lead to evaporator frosting. electrical networks. However, they have less accuracy compared to electronic analogues, and therefore require periodic checking and, possibly, slight adjustments depending on the season and the load of the chambers with products. freezing evaporator.
Mechanical thermostats are highly maintainable and resistant to power surges, which makes them ideal for unstable power grid conditions. However, they are less accurate than electronic counterparts, so they require periodic checking and, possibly, slight adjustments depending on the season and the load on the chambers with products.
Deciphering the thermostat scale and selecting a mode
On the front panel of refrigerators Atlant there is usually a round knob with a digital designation from 1 to 7, where 1 is the warmest mode and 7 is the coldest. For everyday use, it is recommended to set the control to the middle position, usually numbers 3 or 4, which provides an optimal balance between food storage quality and energy consumption. In the summer, when the ambient temperature in the room is high, it makes sense to shift the regulator towards lower values in order to reduce the load on motor-compressor.
In winter, the situation may be the opposite: if the refrigerator is in an unheated room or in a kitchen with a low temperature, you may need to switch to a more intensive mode work. However, it is worth remembering that most household models Atlant are not intended for operation at ambient temperatures below +10°C, since the oil in the compressor thickens and the equipment may fail.
Below is a table that will help you navigate the approximate correspondence between the position of the handle and the temperature conditions inside the refrigerator chambers:
| Handle position | Operating mode | Approximate temperature in the chamber | Recommendation for use |
|---|---|---|---|
| 1 (Min) | Minimum cooling | +8...+10°C | Storage of vegetables, fruits, drinks |
| 3-4 | Normal mode | +4...+6°C | Daily food storage |
| 6-7 (Max) | Maximum cooling | 0...+2°C | Fast freezing, meat storage |
| 0 | Off | - | Defrost or long-term shutdown |
Using the extreme positions of the regulator (1 or 7) on an ongoing basis is not recommended, as this will either lead to spoilage of products due to lack of cold, or to accelerated wear of the equipment. The optimal range is considered to be where the products in the main chamber are cooled to +4...+5°C, and in the freezer - to -18°C.
⚠️ Attention: Never try to disassemble the thermostat itself or forcefully turn the handle beyond the limits. The internal spring may burst and the capillary tube may be damaged, which will lead to a refrigerant leak and costly repairs.
Step-by-step instructions for initial setup
The process of setting up a new or defrosted refrigerator Atlant requires a consistent approach to avoid mistakes and system overload. First, make sure that the unit is installed level, the doors close tightly, and the distance to the walls is maintained according to the instructions. After connecting to the network, let the refrigerator run empty for 2-3 hours in the middle position of the regulator so that the system returns to normal mode.
Next, you need to check the temperature using an external thermometer, placing it in a glass of water on the middle shelf. If the readings differ from the desired ones, adjust the position of the thermostat knob, shifting it by one division and waiting for the temperature to stabilize within several hours. Remember that sudden changes in settings will not give instant results due to the inertia of the cooling system.
☑️ Initial setup checklist
When loading products, try not to block the ventilation holes and distribute the bags evenly so that cold air can circulate throughout the entire volume of the chamber. Correct air circulation directly affects the accuracy of the thermostat readings, since the sensor (or bellows) should read the average temperature, and not local cold zones at the back wall.
If you notice that an ice crust forms on the back wall of the refrigerator compartment (“fur coat”), this is a signal that the operating mode is too intense for the current conditions. In this case, it is necessary to turn the regulator knob towards a decreasing value (for example, from 4 to 3) and check the disappearance of ice after the next defrosting.
Features of setting up dual-circuit systems
In two-chamber models Atlant a system is often used where one thermostat controls the operation of the compressor, focusing on the temperature in the refrigerator compartment, and the freezer compartment is cooled according to the residual principle. This means that by adjusting the main mode, you indirectly affect the freezer, but priority is always given to the upper chamber. If the refrigerator compartment is warm, the compressor will work longer, providing deep cold in the freezer.
In models with a system No Frost or partial automatic defrosting (“Crying evaporator”), it is important not to set the regulator to minimum in hot weather, since the compressor may not be able to cope with heat gain. In such cases, the freezer may not reach the required temperature, and the food will begin to thaw, despite the motor running.
To independently adjust the temperature in the freezer, some models have a separate “Frozen” switch or an additional regulator. Using Super Freeze mode (usually indicated by a snowflake or number 7 with a red dot) should be temporary as it forces the compressor to run continuously.
What is Super Freeze mode?
Superfreezing mode forcibly turns the compressor into continuous operation, ignoring the thermostat stop signals. This is necessary for quick freezing of fresh foods to preserve their structure and vitamins. However, keeping the refrigerator in this mode for more than 24 hours is strictly prohibited - this will lead to overheating of the compressor and its failure. Don't forget to turn off this mode manually after freezing the food.
Typical mistakes when adjusting the temperature
One of the most common mistakes is setting the regulator to maximum immediately after loading a large amount of warm food. Users mistakenly believe that this will speed up cooling, but in fact it creates a critical load on the motor windings, which can lead to protection tripping or failure. It is better to compensate for the thermal load with time, rather than with extreme settings. starting relay and motor windings, which can lead to protection or breakdown. It is better to compensate for the thermal load with time rather than with extreme settings.
Another common mistake is ignoring seasonal changes. In the summer, when the room is +25°C and above, the refrigerator should operate in a more gentle mode (numbers 2-3) in order to have time to turn off. In winter, on the contrary, it may be necessary to increase the power (numbers 4-5) if the room is cool, although modern refrigerants and oils allow equipment to operate over a wide range.
Also, users often forget about the effect of filling the chambers. An empty refrigerator cools down faster, but also heats up faster when the door is opened, while a fully loaded (but not jam-packed) unit operates more stable due to the heat capacity of the food. The adjustment should be made taking into account the average load.
Diagnostics of thermostat malfunctions
If you notice that the refrigerator Atlant stops turning off and works around the clock, creating a thick layer of ice, or, conversely, remains silent for hours, allowing food to spoil; perhaps the thermostat itself is faulty. Mechanical wear of contacts, loss of bellows tightness or displacement of the calibration spring lead to incorrect readings and incorrect control of the compressor.
For preliminary diagnostics, you can perform a simple test: set the regulator to the middle position, wait until the compressor stops, then forcefully disconnect the refrigerator from the network for 15 minutes. Once turned on it should work. If the compressor does not start at all or runs without stopping, regardless of the position of the handle, the thermostat or start relay is likely broken.
In some cases, the problem may not be in the thermostat itself, but in a freon leak or a chamber seal failure. If the cold is not felt when the compressor is operating, and the walls remain warm, adjusting the temperature will not help - you need to call a technician to check the refrigerant.
⚠️ Attention: If you hear clicks of the thermostat, but the compressor does not start (you can only hear a hum or silence), do not try to “help” it with a blow or sharp turning the handle. This may indicate a jammed compressor or a malfunction of the starting device, which requires professional diagnostics.
FAQ: Frequently asked questions
What number should be set on the thermostat in the summer?
In the summer, when the room temperature exceeds +25°C, it is recommended to set the regulator to values 2 or 3. This will allow the compressor to take more frequent breaks in operation, preventing it from overheating and excessive freezing of the rear wall of the refrigerator compartment.
Why does ice freeze in the Atlant refrigerator, although the regulator is not at maximum?
Ice formation can be caused not only by the settings, but also by a loosely closed door, damage to the seal or clogged drain hole. Also check whether the products are adjacent to the back wall where the evaporator is located - this disrupts heat transfer and causes local freezing.
Is it possible to replace a mechanical thermostat with an electronic one?
Theoretically, this is possible, but it requires a deep rework of the control system, installation of new sensors and changes in the electrical circuit. The plant Atlant does not provide for such modernization, so replacement must be made with a similar mechanical thermostat with the appropriate parameters.
What does the red dot on the regulator handle mean?
The red dot (or zone) usually indicates the maximum cooling mode or super freezing. In this position, the thermostat forcibly keeps the contacts closed, forcing the compressor to work continuously. This mode can only be used for a short time (up to 12-24 hours) for quick freezing.