Brand refrigerators Biryusa are deservedly popular due to their simplicity and reliability, but even the highest quality equipment requires attention over time. The question of how the Biryusa refrigerator is regulated often arises when the optimal microclimate is no longer maintained in the chambers. This can be expressed in insufficient cooling of products or, conversely, in their deep freezing and icing.
Correctly setting the temperature is not just comfort, but also a guarantee of the safety of your products, as well as energy savings. In this article, we will analyze in detail the mechanics of the operation of thermostats, the features of relay settings and the nuances that the owners of these units need to take into account.
The principle of operation of the cooling system
To understand how to set it up correctly, you need to know the basics of the device. Most models Biryusa use a compression system, where the thermostat is the key control element. It is he monitors the temperature inside the refrigeration chamber that sends a signal to the compressor to turn on or off.
The adjustment process in mechanical models is tied to the physical expansion and compression of the refrigerant in a sensitive tube thermostat. When the air in the chamber heats above a predetermined threshold, the contacts close, starting the motor. When the desired cold is reached, the circuit opens. A failure in this circuit or incorrect calibration leads to disruption of the operating cycle.
It is worth noting that different models Biryusa can use thermostats from different manufacturers, such as as Tam, K-50 or T-110. The principles of their operation are similar, but the design features of the body and stem may differ, which is important to consider when diagnosing.
Adjusting the thermostat in the refrigeration chamber
The main temperature control tool in most household models is the thermostat knob located inside the refrigerator departments. Usually it has graduations from minimum to maximum or numerical designations. Many users mistakenly believe that the number on the scale corresponds to degrees Celsius, but this is not the case.
The numerical values on the handle indicate the conditional cooling power levels. Turning the knob toward a higher number increases the cold, causing the compressor to work longer. If you notice that the food in the refrigerator compartment begins to freeze at the back wall, the regulator must be turned towards lower values.
For fine tuning it is recommended use external thermometer, placed on the middle shelf. After each change in the position of the handle, you need to wait several hours (usually 4-6 hours) to stabilize the temperature background before drawing conclusions about the need for further correction.
Features of the winter mode
Some models of the old Biryusa series had a "Summer/Winter" switch. Turning it on forcibly started the heating element of the doorway to prevent the seal from freezing in a cold room. In modern conditions and heated apartments, this function is rarely used.
Setting the temperature in the freezer
The question of how the freezer in the Biryusa refrigerator is regulated deserves special attention. In single-compressor models, the temperature in the freezer compartment directly depends on the settings of the main thermostat and the amount of refrigerant entering the evaporator. There is no independent regulator, as in systems No Frost with electronic control.
If too much ice forms in the freezer or, conversely, the meat begins to thaw, the problem often lies not in the settings of the handle, but in the tightness of the system or operation thermostat. However, initial diagnostics should always begin by checking the position of the power regulator.
⚠️ Attention: Sharply moving the thermostat knob to the maximum value ("7" or "Max") in the hope of quickly freezing food can cause the compressor to operate without stopping. This causes overheating of the motor and freezing of the evaporator, which will ultimately worsen heat transfer.
The optimal mode for long-term storage of products is considered to be the position of the handle corresponding to the middle values of the scale. If the standard settings are not enough to achieve the desired cold, the system may need refilling with freon or replacement of the door seal.
Diagnostics and replacement of the start relay
Sometimes problems with temperature conditions are caused not by the settings, but faulty start-up relay. This small unit is responsible for starting the compressor engine and protecting it from overloads. If the refrigerator hums but does not start, or turns on for a few seconds and immediately stalls, adjusting the thermostat will not help.
Relays Biryusa are often posistor-type devices or electromagnetic options. To check them, you need to remove the rear casing panel at the bottom of the unit. Before any manipulations with electrical be sure to disconnect the device from the power supply.
☑️ Checking the start relay
If traces of melting are visible on the relay body, or a ringing sound is heard when shaking inside (the posistor is destroyed), the part must be replaced. It is important to select a relay strictly according to the markings indicated on the body of the old device, since the current characteristics must match the power of your compressor.
Typical faults and their elimination
Owners of refrigerators Biryusa may encounter a number of typical problems that are disguised as the need for adjustment. Understanding the nature of these malfunctions will help you avoid unnecessary expenses on calling a technician where you can handle it yourself, or, conversely, contact the service in time.
Below is a table that helps classify symptoms and possible causes:
| Symptom | Possible cause | Solution method |
|---|---|---|
| The refrigerator does not turn off | Thermostat is faulty or freon leak | Replacing the thermostat, searching for leaks |
| Weak cooling | Incorrect setting or clogged condenser | Adjusting the handle, cleaning the radiator |
| Ice on the back wall | Thermostat setting is too low | Reduce cooling power |
| The compressor does not start | The starting relay has burned out | Replacing the starting relay |
Particular attention should be paid to the condition sealing rubber bands on doors. If they dry out or do not fit tightly, warm air enters the chamber. In this case, the refrigerator will work continuously, trying to compensate for heat loss, and no adjustment of the sensors will correct the situation.
It is also worth checking whether the thermostat rod is sticking. Sometimes it simply gets stuck in an extreme position due to corrosion or contamination, and light tapping or lubrication can restore its mobility.
Frequently asked questions and answers
During operation, users have many questions regarding not only adjustment, but also the operating features of the equipment. We have collected the most popular of them so that you can quickly find the answer.
Why does the Biryusa refrigerator get very cold even on the minimum setting?
This may indicate a malfunction of the thermostat itself, which does not open the circuit when the desired temperature is reached. The reason may also be sticking contacts inside the relay. In such cases, it is necessary to replace the thermostat with a new one.
Is it possible to regulate the temperature in Biryusa electronically?
Most of the classic Biryusa models are equipped with mechanical controls. An electronic panel with a digital display and precise degree adjustment is found only in new, more expensive series. In older models, adjustment is only possible by turning the knob.
How often do you need to defrost the refrigerator for normal operation?
Models with a drip system (crying evaporator) require defrosting approximately once every 6 months or when an ice crust forms more than 5 mm thick. Complete defrosting helps restore heat exchange and reduces the load on the compressor.
What to do if after adjustment the temperature does not change?
If changing the position of the handle does not affect the operation of the compressor for 5-6 hours, the thermostat is likely broken or there is a lack of refrigerant in the system. Professional diagnostics with a pressure gauge are required.
⚠️ Attention: When replacing a thermostat or relay yourself, strictly ensure that the wires are connected correctly. An error in commutation can lead to a short circuit or failure of the compressor windings. If you are not confident in your skills as an electrician, it is better to entrust this work to a specialist.
Proper adjustment and timely maintenance will allow your refrigerator Biryusa to serve for many years. Keep the condenser clean, the chambers sealed and do not overload the unit with warm products.