Selection of refrigeration equipment for kitchens are often accompanied by a search for reliable and time-tested equipment, and the brand Pozis in this list is not the last place. The Russian manufacturer, based in the city of Elabuga, has been supplying the market with refrigerators for many years, which are famous for their maintainability and availability of spare parts. One of the key questions that owners have when a unit fails or wants to upgrade is the identification of the core of the system - the compressor. Understanding which motor is installed in your model is critical for correct and economical repairs.
In this article we will look in detail at what types of compressors are used in different lines of refrigerators Pozis, how they differ from each other and what you should pay attention to when diagnosing faults. Compressor —this is the most expensive and technically complex unit, on which the efficiency of the entire cooling system depends. An error in choosing a replacement element can lead not only to a lack of cooling, but also to damage to other systems, such as the evaporator or condenser. Therefore, knowledge of technical nuances is not just theoretical information, but a necessity.
We will look at lines from classic single-compressor models to modern dual-circuit systems with inverter control. You will learn why in some cases it is more advisable to replace the entire unit rather than try to repair the old one, and what parameters need to be taken into account when purchasing a new part. Issues of compatibility of refrigerants and oils will also be raised, since these aspects are often ignored by unqualified craftsmen, which leads to repeated breakdowns.
Main types of compressors used in Pozis refrigerators
The range of refrigeration equipment Pozis is quite wide, covering the budget segment and models middle class with advanced functionality. Depending on the year of manufacture and series, various types of compressor units can be found in these units. The main division occurs according to the principle of operation and the number of phases. Most household models are equipped with hermetic piston compressors, which are highly reliable and simple in design.
In older and budget series, such as classic Sviyaga or early models Raid, single-phase ones were most often installed asynchronous motors. They work on the principle of constantly turning on and off to maintain a set temperature. Such motors are known for their “indestructibility” if properly maintained, but they consume more electricity and create more noise when starting. Starting relay in such systems is a common cause of breakdown, which can be easily fixed by replacement.
Modern models, especially those with energy efficiency markings A+ and higher, can be equipped with more advanced units. There are also two-compressor systems, where one motor is responsible for the refrigeration chamber, and the second for the freezer. This allows you to independently regulate the temperature in the compartments and defrost them separately without disturbing the food storage mode in another circuit.
⚠️ Attention: Never try to start a compressor designed for R600a freon (isobutane) using oil or parts from the R134a system without completely flushing the circuit. Mixing oils of different chemical bases will lead to the formation of acids and rapid failure of the system.
Marking and manufacturers: who supplies motors for Pozis
The plant Pozis does not produce compressors on its own, but purchases them from trusted suppliers who specialize in refrigeration equipment. The main partner for many years has been the company Danfoss (currently the Secop brand), whose motors are considered the standard of reliability in the industry. Also, in different batches there may be units from Embraco (now Nidec), LG, Samsung or Chinese manufacturers, such as Jiaxipera (brand QD).
To accurately determine which compressor is in your refrigerator, you need a sticker on the unit itself, located on the back wall of the device. The marking contains all the necessary information: model, refrigerant type, refrigerant volume, oil type and electrical characteristics. For example, the abbreviation NL at the beginning of the model name often indicates normal torque, and H - high (High Torque), which is important for systems operating at isobutane.
When looking for an analogue for a replacement, it is important to pay attention not only to the overall dimensions, but also to the cooling capacity. If you install a motor with less power, the refrigerator will work with overload, trying to gain temperature, which will lead to its combustion in a short time. If the power is excessive, this can cause problems with pressure in the system and incorrect operation of the thermostat.
Correspondence table of refrigerator models and compressor types
To simplify the search for information, we have prepared a summary table that will help you navigate the variety. models Pozis and the units used in them. Remember that during the production process the factory may have made changes to the configuration, so a visual check of the sticker on the back panel of your specific device is mandatory.
| Pozis refrigerator series | Refrigerant type | Compressor type (often encountered) | Features |
|---|---|---|---|
| Sviyaga (Classic) | R134a / R600a | Single-phase, asynchronous | High maintainability, simple relays |
| Raid (Many models) | R600a | Low-speed (LBP) | Quiet operation, requires precise charging with freon |
| World (Large volume) | R134a | High-performance (HBP) | Designed for work in warm climates |
| Smart / Inverter | R600a | Inverter BLDC | Smooth start, energy saving, complex electronics |
As can be seen from the table, the transition to refrigerant R600a (isobutane) has become the standard for most modern models. This gas is more environmentally friendly and efficient, but it is explosive in concentration with air. Therefore, compressors for R600a often have a special design of the electrical part that eliminates sparking, or external starting elements.
Inverter models deserve special attention. They use a frequency-controlled compressor, which does not. turns off completely, but only changes the speed of rotation of the shaft. This allows you to maintain the temperature with an accuracy of a degree and significantly reduces the noise level. However, diagnosing and replacing such components requires special equipment and qualifications.
Fault diagnosis: when you need to replace the compressor
Before deciding to purchase a new compressor, you need to make sure that the problem lies precisely there. Often the symptoms indicating the “death” of the motor are actually caused by a malfunction of the starting relay, thermostat or freon leak. Diagnostics should begin with a visual inspection and listening to the operation of the unit.
- 🔊 Characteristic click and silence: If you hear a clicking sound relay, an attempt to start the motor (humming), and then a click and shutdown again - this may indicate a jamming of the compressor or a malfunction of the starting winding.
- 🔥 Overheating: The compressor should be warm during operation (about 50-70°C), but if it heats up to temperatures that are impossible touch, this is a sign of overload or problems with refrigerant circulation.
- ❄️ No cold when the engine is running: If the compressor hums continuously without turning off, but the temperature in the chambers does not drop, there may be a freon leak or a clogged capillary tube, and the motor itself is working properly.
- ⚡ Knocking out plugs: If, when you turn on the refrigerator, the circuit breaker in the panel immediately trips, there is a short circuit in the motor windings.
It is also important to check the resistance of the windings using a multimeter. The normal resistance of the starting winding is usually higher than that of the working winding. If the device shows infinity (open) or zero (short circuit), the compressor must be replaced. It is also worth checking the resistance between the housing and the contacts - it must be infinite, otherwise the motor “breaks through” to ground.
⚠️ Attention: If you find that the compressor vibrates strongly or makes a metallic knock, do not try to place rubber gaskets under the legs of the refrigerator. This is a symptom of internal mechanical failure (destruction of valves or bearings), and the unit requires urgent replacement.
Replacement process: technical nuances and important steps
Replacing a compressor in a refrigerator Posis is a complex technical process that requires special tools: pipe cutter, rolling, vacuum pump and pressure gauge station. Simply “biting off” the old tubes and soldering new ones is not enough. The system must be absolutely clean and dry, otherwise the moisture that gets inside will freeze in the capillary and block the circulation of freon.
The first step is always to dismantle the old unit and remove the condenser grille (if it is made in the form of a foamed plate on the back wall, sometimes it is cut off and are replaced with a hinged one, although this worsens the aesthetics). Then the new compressor is soldered. It is important to use a torch with a flame that does not oxidize copper, and to use solder containing silver to ensure the reliability of the seams.
☑️ Algorithm for replacing the compressor
A critically important step is installing a new filter drier. This item is disposable and is strictly prohibited from reuse. The filter removes moisture and oil breakdown products from the system. If you skip this step or poorly evacuate the system, the new compressor may burn out after a few months of operation due to water hammer or oil coking.
Why can’t you open the system without a vacuum sealer?
If you simply replace the compressor without creating a vacuum in the system, air and water vapor will remain inside. When the compressor operates, water will react with freon and oil, forming aggressive acids. This will lead to corrosion of the tubes from the inside and destruction of the motor windings.
Frequent questions and answers from experts (FAQ)
Refrigerator owners Pozis often ask similar questions related to the selection and replacement of compressors. Below we have collected answers to the most popular of them to help you save time and avoid common mistakes.
Is it possible to supply a compressor from another brand, for example, from Atlant or Indesit?
Yes, it is possible, but subject to a number of conditions. The main thing is the coincidence of the cooling capacity (power) and the type of refrigerant. The overall dimensions and mounting pattern of the legs must also match. Often motors from Atlant perfectly replace the standard ones, since many of them were produced at the same partner factories. However, the starting relay may differ, so it is better to change it complete with the compressor or select it strictly according to the model of the new motor. Pozis, since many of them were produced at the same partner factories. However, the starting relay may differ, so it is better to change it complete with the compressor or select it strictly according to the model of the new motor.
How much does it cost to replace the compressor in a service center?
The cost is the price of the compressor itself unit and the work of the master. Currently, the price of a new compressor varies from 4,000 to 10,000 rubles, depending on the model and manufacturer. Replacement work, including refilling with freon and visiting a technician, can cost another 3,000 to 6,000 rubles. As a result, repairs can amount to more than half the cost of a new refrigerator, which must be taken into account when making a decision.
Why does the new compressor get hotter than the old one?
Modern compressors, especially those running on R600a freon, have higher efficiency, but also greater heat transfer to the housing. In addition, if an old contaminated capacitor or filter remains in the system, the load on the motor increases. If the temperature seems abnormally high to you (boiling water), you should check the current consumption with an ammeter - it should not exceed the nominal value indicated on the tag.
Is it necessary to change the capacitor (grid on the back) when replacing the compressor?
Ideally, yes, especially if the old refrigerator has been in use for more than 10 years. The old condenser has less heat output due to corrosion and contamination, which forces the new compressor to work longer and harder. If you replace the motor, but leave the “dead” radiator, the service life of the new unit will be significantly reduced. As a last resort, the old condenser can be washed with special means under pressure, but it is better to install a hinged one.
To summarize, we can say that the choice compressor for a refrigerator Pozis is a task that requires careful attention to detail. Knowing the markings, type of refrigerant and features of your model, you can not only correctly diagnose the problem, but also monitor the work of a service technician or carry out repairs yourself if you have the necessary skills. Remember that high-quality spare parts and compliance with installation technology are the key to the long life of your refrigerator.