Refrigerator Stinol 107 is a classic representative of two-chamber technology, which has earned popularity due to its reliability and understandability designs. Understanding exactly how this unit functions allows owners not only to effectively use its capabilities, but also to notice the first signs of malfunctions in time. The operation of the model is based on a standard refrigerant compression cycle, but the design No Frost systems in the freezer compartment has its own important features.
Many users mistakenly believe that cold is “created” inside the chamber, but in fact, there is an active selection of heat from the internal volume and its release into the environment. A combination of a compressor, condenser and evaporator is responsible for this process. The model 107 implements a system where the freezer compartment does not require manual defrosting, while the refrigerator compartment is cooled by natural convection or forced circulation, depending on the specific modification of the unit.
When understanding the device, it is important to consider that any manipulations with technical components require caution. The system is charged with refrigerant under high pressure, and a violation of the tightness of the circuit can lead to equipment failure without the possibility of recovery. Next we will look in detail at each stage of the cooling cycle and analyze which components are responsible for temperature stability.
⚠️ Attention: Before starting any diagnostic or cleaning work, be sure to disconnect the device from the power supply. Working with electrical wiring and a compressor under voltage is deadly.
The main refrigeration cycle: the refrigerant path
The heart of any refrigerator, including Stinol 107is the compressor. It is this that creates the necessary pressure for circulation freon along a closed circuit. When you plug in the appliance, an electric current starts the compressor motor, which begins to compress the refrigerant gas coming from the evaporator. When compressed, the gas heats up greatly and goes into a state of high pressure.
Next, the hot gas is sent to the condenser - this is a grill, usually located on the back wall of the housing. Passing through the winding tubes of the condenser, the refrigerant gives off heat to the surrounding air and gradually cools, turning into a liquid. This process is called condensation. Liquid freon under high pressure approaches the capillary tube, which serves as a choke, sharply reducing the pressure before entering the evaporator.
When entering the evaporator located inside the freezer, the liquid refrigerant instantly boils even at low temperatures. When boiling, it actively absorbs heat from the internal volume of the chamber, cooling its walls. After the evaporator, the already gaseous, but cold freon returns to the compressor again, and the cycle repeats. This process continues until the thermostat registers the achievement of the set temperature.
- ❄️ The compressor compresses the gas, increasing its temperature and pressure.
- 🔥 The condenser on the rear wall cools the gas, turning it into liquid.
- 💧 The capillary tube sharply reduces pressure before entering the evaporator.
- 🌬️ In the evaporator, the refrigerant boils, taking heat from the refrigerator chambers.
The efficiency of this cycle directly depends on the cleanliness of the condenser. If the radiator grille is clogged with dust or animal hair, heat transfer deteriorates and the compressor is forced to work longer to achieve the desired performance.
⚠️ Attention: Do not install the refrigerator close to the wall. A minimum gap of 10 cm is required for free circulation of air around the condenser.
Specifics of the No Frost system in model 107
One of the key features Stinol 107 is the presence of technology No Frost (or Low Frost in some modifications) in the freezer compartment. Unlike older models with a crying evaporator, here the air circulates forcibly. A special fan located behind the back wall of the freezer drives cold air from the evaporator into the chamber and further into the refrigerator compartment through special channels.
The main problem with such systems is the formation of frost on the evaporator itself, which is hidden inside the case. To prevent ice from blocking ventilation and reducing cooling efficiency, the design includes an automatic defrosting system. Periodically, after certain intervals of operation of the compressor, it turns on Defrost heating element. It heats the evaporator, melting the frozen ice.
The resulting water flows down a groove into a special container located above the compressor. There it safely evaporates due to the heat of the running engine. This process is fully automated and does not require user intervention. However, if the defrosting system fails, ice can completely block the channels, and the cold will stop flowing into the chambers, although the compressor will work continuously.
How often does defrosting occur?
The defrost cycle in Stinol 107 usually starts every 8-12 hours of compressor operation or by a timer signal. The duration of the process is about 20-30 minutes, depending on the amount of frozen ice and the serviceability of the sensors.
The role of the thermostat and electrical circuit
The control of the entire cooling process in Stinol 107 takes over the thermostat. This device constantly monitors the temperature inside the refrigerator compartment. The design is a bellows filled with gas or liquid, which responds to changes in thermal conditions. When the temperature rises above the standard you set, the contacts close and the compressor starts.
Once the air inside has cooled enough, the bellows contracts, breaking the electrical circuit. The compressor stops and a rest period begins. The duration of this period depends on many factors: room temperature, amount of food, frequency of door openings. Modern modifications may also contain an electronic control module, but the classic one is often equipped with a mechanical regulator. 107 often equipped with a mechanical regulator.
A starting relay is also included in the electrical circuit. It protects the compressor motor from overloads and helps it start by providing a short-term impulse to the starting winding. If you hear a click followed by a hum, but the engine does not start and after a few seconds the click is heard again, the problem most likely lies in this unit or in the compressor itself.
- 🎚️ The thermostat mechanically closes and opens the power circuit.
- ⚡ The starting relay provides engine start and protection from overheating.
- 🌡️ The defrost sensor monitors the temperature of the evaporator in defrost mode.
- 🔌 The protective relay turns off the power when the current increases critically.
It is important to understand that unstable operation of the thermostat can lead to two extremes: either food will freeze in the refrigerator compartment, or the ice in the freezer will begin to melt due to too infrequent switching on.
Table of main technical parameters
To fully understand the operation of the model Stinol 107 it is useful to refer to its technical characteristics. This data helps evaluate the energy efficiency and performance of the device. Below are the average indicators typical for this series of refrigerators.
| Parameter | Value | Unit of measurement |
|---|---|---|
| Total volume | 345 | liters |
| Freezer volume | 115 | liters |
| Energy consumption class | A / A+ | class |
| Freezing power | 4.5 - 6.0 | kg/day |
| Noise level | up to 40 | dB |
The freezer volume of 115 liters is a significant indicator for a refrigerator of this height, which allows you to store large stocks of food. However, it is worth remembering that the real efficiency of freezing depends on the fullness of the chambers: an empty refrigerator works less efficiently, since the products have nowhere to accumulate cold.
Typical problems and their impact on operation
Even a reliable one Stinol 107 may eventually encounter technical problems. One of the most common malfunctions is the failure of the defrost system. If the heating element or defrost sensor burns out, ice freezes on the evaporator in a thick layer. The fan begins to make noise, touching the ice crust, or stops altogether. As a result, the cold does not enter the chambers, and the food spoils.
Another common problem is a refrigerant leak. This can occur due to corrosion of the evaporator tubes (especially if it is aluminum and located in the foamed part of the housing) or mechanical damage. The symptoms of a leak are obvious: the compressor runs almost non-stop, trying to gain temperature, but there is no cold. In this case, the condenser (grid at the back) remains cold or warm only at the entrance.
Do not forget about the problem of blockage of the capillary tube. An ice or oil plug may form in the system, blocking the circulation of freon. In this case, the refrigerator can work cyclically: it cools, then stops, and cools again. Diagnosis of such faults requires specialized equipment and skills.
☑️ Symptoms of a malfunction
⚠️ Attention: If you notice that the compressor has been running non-stop for more than 24 hours, immediately turn off the device. Long-term operation in emergency mode can lead to burnout of the motor windings.
Operation rules to extend service life
In order for Stinol 107 to serve you for many years, it is important to follow simple operating rules. Firstly, do not put hot food in the chamber. This creates excess load on the compressor and leads to increased formation of condensation, which in the No Frost system turns into an ice coat faster than usual.
Secondly, regularly check the door seals. If the rubber becomes dry or dirty, warm, moist air enters the chamber. This not only increases energy consumption, but also causes the defrost system to work under overload. Wipe the seals with a soft cloth and check the tightness of the seal.
Thirdly, monitor the temperature in the room. The refrigerator is not intended for operation in unheated rooms at temperatures below +10°C or above +32°C. Under such conditions, the oil in the compressor may thicken or, conversely, become too liquid, which will lead to accelerated wear of the mechanism.
- 🧼 Regularly wash the internal surfaces with a weak soda solution.
- 🚪 Do not keep the doors open for more than 1-2 minutes.
- 📦 Do not fill the chambers with food to capacity, leave room for air.
- 🔌 Use a separate grounded socket for connection.
Following these simple recommendations will help maintain the efficiency of the refrigerator and avoid costly repairs in the future. Remember that prevention is always cheaper than replacing main components.
Why does the Stinol 107 refrigerator make a loud noise when turned on?
Loud noise in the first seconds of operation may be associated with water hammer in the compressor or the operation of the start relay. If the noise persists constantly, you may need to replace the compressor or check the fastening of the shock absorbers.
What to do if there is water in the refrigerator compartment and ice in the freezer?
Most likely, the drain hole for condensate removal is clogged. It must be carefully cleaned using a soft wire or brush. Also, the problem may be a loose fit of the door.
Is it possible to reverse the doors on model 107?
In most modifications of the Stinol 107, it is possible to reverse the doors to the other side. To do this, you will need a set of tools and removing the decorative plugs on the opposite side of the case.
How often do you need to defrost Stinol 107?
The model is equipped with a No Frost system, which automatically removes moisture. Complete defrosting is required only for hygienic treatment, approximately 1-2 times a year, or in case of breakdown of the defrosting system.