Modern domestically produced refrigerators, such as the Pozis Paracelsseries, have proven themselves to be reliable and durable units, but their mechanical control often raises questions among new owners. Unlike digital display panels, climate control is manual, which requires an understanding of the physical cooling processes. Correct setting of the operating mode directly affects the safety of products and the service life of the compressor.
Many users mistakenly believe that it is enough to simply turn the knob to an arbitrary value, but for optimal operation refrigeration chamber it is necessary to take into account the external temperature in the room and the degree of loading of the shelves. Incorrect installation of the thermostat can lead to excessive energy consumption or damage to perishable goods. In this article, we will analyze in detail the algorithm of actions to achieve an ideal microclimate inside your unit.
The principle of operation of a mechanical thermostat
Series Pozis Paracels (Biryusa models 6, 8, 10, 12, 14 and their modifications) is equipped with a classic mechanical thermostat. The adjustment occurs via a rotary knob located inside the refrigerator compartment, usually on the left wall or under the lampshade. The numbers on the scale from “1” to “5” (or to “7” depending on the modification) do not indicate degrees Celsius, but the intensity of the compressor.
It is important to remember the key principle: the higher the number you set, the the temperature will be lower there is inside the chamber. If the knob is set to “1”, the compressor will turn on rarely, maintaining a relatively warm mode. When set to the maximum value, the unit will work almost without stopping, trying to create the maximum possible cold.
- 🌡️ Position “0” or “Off” - complete shutdown of the power supply, the compressor does not work.
- ❄️ Position "1-2" - economical mode, temperature about +6...+8°C, suitable for storing vegetables.
- ⚡ Position "3-4" - standard operating mode, maintaining +2...+5°C, optimal for everyday use.
- 🧊 Position "5" and above - intensive freezing mode or operation in a hot room, the temperature can drop below 0°C.
⚠️ Attention: Never leave the thermostat at maximum value during the cold season unless necessary. This will lead to the formation of an ice coat on the evaporator and increase the load on the motor-compressor.
The mechanical thermostat reacts to the temperature of the evaporator, and not the air in the chamber, which creates a slight inertia. After turning the knob, the actual change in the climate inside does not occur instantly, but within a few hours. Therefore sharp jumps settings will not give quick results and can disorient the automation.
Step-by-step instructions for setting the optimal mode
For initial setup or correction of your operation Pozis Paracels it is necessary to perform a series of sequential actions. This will ensure stable operation of the equipment and extend the shelf life of the products. Before starting manipulations, make sure that the refrigerator has stood in an upright position for at least 4 hours after transportation.
☑️ Temperature adjustment algorithm
Start by setting the thermostat knob to the middle position, usually the number “3”. This is the most versatile setting for most household environments. If in the room where the refrigerator is located, the air temperature does not exceed +25°C, this value will be sufficient to maintain freshness.
After turning on the unit, let it run idle (without food) or with a minimum load for 5-6 hours. During this time, the system will enter the operating cycle. Check the condition of the food: if vegetables in the refrigerator compartment are freezing at the back wall, reduce the value to “2”. If dairy products quickly sour, add one divider.
| Position of the regulator | Approximate t°C in the chamber | Compressor operating mode | Recommendation for the season |
|---|---|---|---|
| 1 (Min) | +6...+8°C | Rare switching on | Winter (heating off) |
| 3 (Avg.) | +3...+5°C | Normal cycle | Spring / Autumn |
| 5 (Max) | 0...+2°C | Continuous work | Summer (heat in the kitchen) |
| 6-7 | Below 0°C | No stops | Only for freezing |
The influence of loading and arrangement of products on cooling
Operating efficiency refrigeration unit directly depends on the circulation of cold air. In models Pozis Paracels with a drip defrosting system, cold air falls from top to bottom along the back wall. If the shelves are packed tightly to the top, circulation is disrupted and the thermostat may not read the temperature correctly.
Try not to place hot or warm food directly next to the temperature sensor (usually the capillary tube leading to the control knob). Local heating in this area will cause the compressor to work longer than necessary, which will lead to freezing of other parts of the chamber. It is optimal to fill the chamber volume by two-thirds, leaving space for air flow.
- 🥩 Store raw meat and fish on the bottom shelf, where the temperature is always lower.
- 🥛 It is better to place dairy products on the middle shelves, avoiding the door.
- 🥦 Store vegetables and fruits in the lower drawers, protected from direct cold flow.
Frequent opening of the door also makes its own adjustments. Warm, humid air from the kitchen enters, raising the overall temperature and causing the automation to turn on the motor. In the summer, when the temperature difference between inside and outside is large, this effect intensifies, requiring more careful monitoring of the position of the thermostat knob.
Seasonal adjustment and external factors
The environment plays a critical role in the operation of refrigeration equipment. In winter, when the apartment is cool (for example, +18...+20°C), the refrigerator requires less effort to maintain cold. If you leave the regulator on summer mode, the compressor may not turn on at all, which will lead to defrosting of the freezer.
In summer the situation is the opposite. High temperatures in the kitchen (+25...+30°C) cause the heat exchanger to work under increased load. During this period, it may be necessary to shift the thermostat knob by one notch towards increasing power, but no more. Constant operation at maximum capacity in the heat can reduce the life of the motor-compressor motor-compressor.
⚠️ Attention: Do not install the refrigerator near heating appliances, gas stoves or in direct sunlight. This distorts the operation of the thermostat and leads to false temperature readings.
It is also worth considering the seasonality of products. In winter, we often buy shelf-stable products, and in summer, we buy perishable ones. Adapt the settings to your current needs: if you are leaving for a week and leaving the refrigerator empty, set the minimum mode or turn it off completely.
Diagnostics of problems with temperature conditions
Sometimes users are faced with a situation where changing the position of the handle does not produce a visible result. This may indicate a malfunction of the thermostat, a freon leak, or a compressor failure. If the handle is set to “three”, but the food in the chamber is warm and the motor is silent, the thermostat is probably out of order thermostat.
The opposite situation: the refrigerator hums continuously, a thick layer of ice has formed on the back wall, and the food in the main chamber is frozen. This is a sign that the thermostat contacts are stuck closed, or that there is a refrigerant leak (in some systems, the leak causes a longer operating cycle). In such cases, simple reconfiguration will not help.
Hidden signs of malfunction
If you hear clicks when you try to start the motor, but it does not turn on, the problem may be in the start relay, and not in the temperature settings.
Check the tightness of the door. If the seal (elastic band) is worn out or dirty, warm air will constantly be sucked in. In this case, the refrigerator will wear out, trying to compensate for heat loss, and it will become impossible to set the normal temperature.