Refrigerators Biryusa have enjoyed deserved popularity for many years due to their reliability and simplicity of design. However, like any equipment, they require proper handling, especially when it comes to setting the temperature. Owners are often faced with the question: in which direction should they turn the thermostat knob to make it colder or, conversely, warmer? The answer to this question is critical for food safety and energy savings.
Incorrect settings can lead to rapid spoilage of perishable goods or, conversely, to their freezing in the main compartment. Mechanical thermostats installed on most models of this brand have their own operating features, which are not always obvious at first glance. Understanding the logic of operation thermostat will allow you to avoid common mistakes and extend the life of the compressor.
In this article we will analyze in detail the principle of turning the knob, explain the meaning of the numbers on the scale and consider the nuances of the device’s operation depending on the time of year. You will learn to diagnose cooling problems and understand when a simple adjustment will help, and when a technician's intervention is required.
The principle of operation of a mechanical thermostat
Mechanical thermostat in refrigerators Biryusa is a device that controls the operation of the compressor. Hidden inside the housing is a sensitive tube filled with gas or liquid that responds to changes in temperature in the chamber. When heated, the gas expands, opening the contacts, and the compressor starts. When the desired cold is achieved, the reverse process occurs.
When you turn the knob, you change the tension of the spring inside the mechanism, which affects the resistance force that the expanding gas must overcome. This determines at what temperature it will work automation and stop cooling. The numbers on the scale do not indicate degrees Celsius, they only indicate the degree of intensity of work.
It is worth noting that mechanical regulators tend to wear out over time. The spring may weaken and the moving parts may become rusty or dirty. That is why older models require more careful attention to settings than modern electronics.
Rotation direction: how to adjust the cold
The most important question that worries users: in which direction turn the handle? The logic of the regulators Biryusa is standard for most mechanically controlled refrigerators. The panel usually has a scale from minimum (often indicated by the number 1 or Min) to maximum (number 5, 7 or Max).
To do it in the camera colder, the knob must be turned clockwise, increasing the value on the scale. This causes the compressor to run longer without switching off until the temperature drops to lower values. And vice versa, to increase the temperature (make it warmer), the knob is turned counterclockwise, decreasing the number.
It is important to understand that you should not expect an instant result. After turning the knob, the refrigerator takes time to stabilize the temperature. Usually this process takes from 2 to 6 hours, depending on the load of the chambers and the ambient temperature in the kitchen.
- ❄️ Turning clockwise (increasing numbers) - more intensive cooling mode.
- ☀️ Turning counterclockwise (decreasing numbers) - decreasing intensity, temperature in the chamber is growing.
- ⏸️ Position "0" or "Off" - complete shutdown of the compressor, the refrigerator stops cooling.
Deciphering the numbers on the regulator scale
Many users mistakenly believe that the numbers on the handle correspond to degrees Celsius. This is wrong. The scale from 1 to 7 (or to Max) indicates the ranking of cooling power. The unit corresponds to the “warmest” operating mode, in which the compressor turns on rarely and does not operate for long. Seven or Max is the maximum performance mode.
The optimal value for year-round operation is considered to be a position between 3 and 4. This range provides a balance between food safety and energy consumption. Setting the regulator to the maximum (6-7) is justified only in emergency cases, for example, when quickly freezing a large volume of food.
Below is a table that helps you navigate the scale values and their impact on the operation of the unit:
| Value on the scale | Operating mode | Impact on products | Energy consumption |
|---|---|---|---|
| 1 (Min) | Minimum cooling | Temperature about +8...+10°C, risk of spoilage | Minimum |
| 3-4 | Normal mode | Optimal +3...+5°C | Average |
| 5-6 | Enhanced cooling | Temperature approx. 0...+2°C | High |
| 7 (Max) | Frozen / Turbo | Risk of freezing in the main chamber | Maximum |
What will happen if you keep the Max mode for a long time?
Continuous operation at maximum power leads to accelerated wear of the compressor, the formation of a thick ice crust on the evaporator and possible freezing of products in the main chamber, even if they are not intended for freezing.
Seasonal adjustment: Summer and Winter
Ambient temperature directly affects operating efficiency refrigerator. In summer, when the apartment is hot, heat loss through the walls of the chamber increases. The compressor has to work harder to maintain the set mode. During this period, it is recommended to set the regulator to values 3 or 4.
In winter, the situation changes. If the refrigerator is in an unheated room or the kitchen becomes cool, the load on the system drops. However, if you set the mode too high (5-7), this may lead to incorrect operation of the system No Frost (if there is one) or excessive freezing of the weeping evaporator. In winter, values of 2-3 are optimal.
There is a common misconception that in winter you need to turn the knob to the maximum to “compensate for the cold.” This is a big mistake. The refrigerator produces the cold itself; it does not need to be helped by the outside temperature. On the contrary, it needs to be prevented from overheating in the summer and not allowed to overfreeze food in the winter.
⚠️ Attention: If your refrigerator Biryusa is located near the battery or in direct sunlight, in the summer you may need to set the regulator to 4-5, but it is better to eliminate the heat source, since constant operation at the limit will reduce the resource equipment.
Checking the health of the thermostat
Sometimes users turn the knob, but the temperature does not change. This may indicate a malfunction of the thermostat itself or a refrigerant leak. A simple way to check the performance of the regulator is visual and control. When you turn the knob, a slight click should be heard, and the knob itself should rotate with a certain force, without scrolling endlessly.
If the refrigerator stops turning off and works around the clock, the food freezes, and the knob is at a minimum - most likely, the contacts are stuck or the seal of the thermostat bellows is lost. In such a situation, simple adjustment will no longer help.
It is also worth paying attention to the cyclical nature of the work. Normally, the refrigerator should turn off and turn on at certain intervals. If it is silent for hours at any setting or buzzes without a break, this is a reason for diagnosis.
- 🔍 Check whether the handle is stuck in extreme positions.
- 👂 Listen to the characteristic click when turning the knob.
- 🌡️ Use an external thermometer to control the actual temperature inside the chamber.
☑️ Diagnosis of temperature problems
Typical errors during setup
One of the most common mistakes is setting the regulator to maximum immediately after loading a large amount of warm food. This creates a colossal load on compressor. It is more correct to let the products cool a little with the door open or set the medium mode, but for a longer time.
Another mistake is frequent and abrupt switching of modes. The mechanics need time to adapt. If you turn the knob, give the refrigerator at least a day to stabilize before jumping to conclusions about insufficient cooling. Constant manipulation can lead to premature wear of mechanical parts.
Do not forget about the location of the products. If you have tightly packed the chamber, blocking air access to the sensor (or evaporator), then even correct mode work will not provide uniform cooling. Cold air should circulate freely.
⚠️ Attention: Never try to forcibly turn the handle if it rests against the limiter. This may cause the governor shaft to break. The movement should be smooth.
FAQ: Frequently Asked Questions
Why does the Biryusa refrigerator not turn off even at the minimum setting?
This may indicate several problems: freon leak, malfunction of the thermostat (it “does not feel” the cold), wear of the door seal or clogging capillary tube. If, when set to "1", the compressor still runs without stopping, a call to the technician is required.
Which knob position is the most economical?
The most economical mode is the "1" or "Min" position, however, in this mode the temperature may not be low enough to safely store meat and dairy products. The optimal balance of economy and safety is in the range of 3-4.
Is it possible to completely turn off the refrigerator using the regulator knob?
Yes, on most models Biryusa turning the knob counterclockwise all the way (often until it clicks or the number 0) opens the electrical circuit and turns off the compressor. This is convenient during defrosting or prolonged downtime.
What to do if the regulator handle is broken?
If the plastic handle has simply fallen off, it can be put back in place. If the rod or internal mechanism is broken, the entire thermostat will need to be replaced. Operation with temporary fixations (insulating tape, adhesive tape) is not recommended, since it is impossible to accurately control the temperature.