Every owner of household appliances sooner or later is faced with the need to understand how his equipment works. In particular, the evaporator in the refrigerator Atlant is one of the key elements that ensures cooling of the chambers. It is this unit that is responsible for absorbing heat from the internal space, turning the liquid refrigerant into gas. Understanding its operation helps to quickly diagnose faults and extend the service life of the unit.
Modern models of the Belarusian brand can be equipped with various heat removal systems, from classic weeping panels to more complex designs No Frost. If you notice that the appliance has stopped freezing or a coat of ice has formed on the walls, the problem often lies in this component. Let's analyze in detail its functionality and typical problems.
The principle of operation of the evaporator in the cooling system
The main task of this unit is effective heat exchange. Liquid freon, passing through the capillary tube and entering the expander, dramatically changes its state of aggregation. At this moment, active absorption of thermal energy from the air of the fridge compartment occurs. Evaporator is a coil or panel that is cooled to subzero temperatures.
In refrigerators Atlant with manual defrosting or a drip system, this element is usually hidden behind the back wall or built into it. Air circulation occurs naturally: warm air falls down, cools at the surface of the radiator and rises. In models with a system No Frost the process is intensified due to the operation of a fan, which forcibly drives the cold flow through the channels.
It is important to understand that the efficiency of operation directly depends on the cleanliness of the heat exchanger surface. If a thick layer of ice or frost forms on the tubes or plates, the thermal conductivity decreases. The compressor is forced to work longer in order to reach the specified temperature values, which leads to increased energy consumption.
⚠️ Attention: Mechanical cleaning of the evaporator with sharp objects (knife, screwdriver) is strictly prohibited. Damage to thin tubes will lead to an immediate release of freon and expensive repairs with refilling the system.
Location and types of evaporators in Atlant models
The design of the unit depends on the series of the refrigerator. Budget and classic models often use a foamed evaporator. This means that the tubes are mounted directly into the back wall housing and filled with foam. This design is reliable, but practically cannot be repaired at home in the event of a breakdown.
In more complex units, especially two-chamber ones, the evaporator can be of an open type. It is located in the freezer compartment, often behind a plastic panel. This is where the main process of freezing food takes place. Cold air is then distributed into the refrigerator compartment through special air ducts.
- 🧊 Open type: Aluminum fins or coil located in the freezer are easily accessible for visual inspection after removing the lid.
- ❄️ Foamed type: Located inside the wall, only the smooth surface of the plastic is visually visible, repair can only be done by replacing the entire panel or circuit.
- 💨 No Frost system: Compact heat exchanger hidden deep inside the housing, working in tandem with a defrost heating element and a fan.
You can determine the type of your device according to the model specified in the technical data sheet. For example, in a series Cold 03 or KShD designs may vary significantly. Knowledge of the type of structure is necessary when planning defrosting or diagnosing leaks.
Main causes of ice and frost formation
One of the most common problems faced by users is excessive icing. During normal operation, a thin layer of frost forms on the surface, which periodically thaws. However, if the layer becomes thick, this indicates a failure. heat exchanger A thin layer of frost forms, which periodically thaws. However, if the layer becomes thick, this indicates failure.
Often the reason lies in a loose fit of the door seal. Warm, moist air from the room constantly flows inside, and moisture condenses on the cold pipes. The culprit may also be a malfunction of the defrost sensor or timer, which does not start heating to remove ice at the right time.
If you find that the evaporator is covered with a “fur coat,” do not rush to pick at the ice. First check the tightness of the circuit and the operation of the defrost system. In some cases, it is necessary to replace the thermostat or check the integrity of the wiring going to the heating element.
| Symptom | Probable cause | Action |
|---|---|---|
| Thick layer of ice | The defrost heating element is faulty | Check with a multimeter, replacement |
| The refrigerator does not freeze | Freon leakage | Call a technician, look for a breakdown |
| Continuous operation of the motor | Seal failure | Replacing the door seal |
| Puddle inside the chamber | Clogged drainage | Cleaning the hole |
It is important to note that regular ice formation significantly reduces the life of the compressor. It works hard, trying to compensate for poor heat transfer. Therefore, you should not ignore the first signs of improper operation of the system.
Diagnostics of faults and search for leaks
If the refrigerator Atlant stops cooling, and the compressor operates silently or, conversely, hums non-stop, a refrigerant leak may have occurred. The evaporator is one of the most vulnerable places, especially if it is made of aluminum. Corrosion or mechanical damage can disrupt the tightness of the circuit.
For diagnostics, technicians use special leak detectors or the method of immersion in water (if the unit is dismantled). At home, you can pay attention to oily stains on the walls or bottom of the freezer. Freon itself does not smell and is not colored, but it circulates along with oil, which leaves traces at the point of breakdown.
⚠️ Attention: Refilling the refrigerator with freon yourself without vacuuming the system and finding the cause of the leak is a waste of money. The gas will escape again through the same hole.
It is also worth checking the condition of the capillary tube that supplies the refrigerant to the evaporator. If it is clogged with oxidation products or moisture (blockage), circulation will stop. In this case, the evaporator can remain warm, while the condenser (grid at the back) will be hot.
Rules for proper defrosting and maintenance
Regular maintenance prolongs the life of the equipment. Even if your Atlant equipped with an automatic defrosting system, preventive defrosting once a year will not hurt. It allows you to remove accumulated odors and check the cleanliness of the drainage channels.
The defrosting process should be natural. Do not use hair dryers, boilers, or hot water to speed up the melting of ice on the evaporator. A sudden temperature change can deform aluminum tubes or damage the plastic housing of the camera.
- 🚫 Disconnect the device from the power supply completely.
- 🍖 Remove all products and shelves.
- 🚪 Leave the doors open for 10-12 hours.
- 🧹 Wipe the insides with a soft cloth and soda solution.
After the procedure, be sure to wipe all surfaces dry before turning it on. This will prevent the immediate formation of a new ice crust. Also check if the water drainage hole, which is often located at the bottom of the back wall, is not clogged.
☑️ Checklist before turning on
Is it possible to replace the evaporator yourself
Replacing the evaporator in a refrigerator Atlant is a complex technical process that requires special equipment. You will need welding (for copper and aluminum), a vacuum pump, a pressure gauge station and a scale for dosing freon. Without these tools, it is impossible to carry out high-quality repairs.
If you still decide to replace, you need to select a similar model of heat exchanger. The parameters must match the heat exchange area and the length of the tubes. An incorrectly selected unit will result in the compressor not working correctly or the cooling efficiency decreasing.
The cost of work at a service center often consists not only of the price of the spare part, but also of the difficulty of accessing the unit. In models with a foamed evaporator, it is sometimes easier to install the outer circuit ("crying grille") on the back wall than to open the case.
⚠️ Attention: The use of universal evaporators ("snakes") requires accurate calculation of the length. A tube that is too long will lead to freezing of the compressor inlet and its breakdown; a tube that is too short will lead to undercooling.
The impact of the design on energy consumption
The type of installed cooling system directly affects electricity bills. Refrigerators with open evaporator and natural circulation (static) consume less energy, but require manual defrosting or have a drip system. Models with forced circulation and additional heating elements for defrosting consume more kWh. However, modern models are equipped with energy-efficient compressors and improved insulation, which eliminates the difference. The main thing is to monitor the condition of the seals and not to overload the chambers with products that block air flow. No Frost with forced circulation and additional heating elements for defrosting they consume more kW/h.
However, modern models Atlant are equipped with energy-efficient compressors and improved insulation, which eliminates the difference. The main thing is to monitor the condition of the seals and not to overload the chambers with products that block air flow.
If you notice a sharp jump in electricity consumption, check if the evaporator is covered with ice. The thick “fur coat” works as a heat insulator, forcing the motor-compressor to work almost non-stop. Timely defrosting will return energy consumption to normal.
How often do you need to defrost the Atlant refrigerator?
Models with a drip system require defrosting 1-2 times a year for prevention. Units with manual defrosting - as ice builds up (usually with a layer of 3-5 mm). No Frost systems do not need defrosting, but preventative washing once a year is useful.
Why does the evaporator whistle during operation?
Whistling or hissing may indicate freon escaping through a microcrack. The sound can also come from air passing through narrowed channels or a clogged filter drier. Diagnostics by a specialist is required.
Is it possible to paint the evaporator?
You cannot paint the open parts of the evaporator with ordinary paints - this will worsen the heat transfer. There are special heat-resistant coatings for radiators, but their use in refrigeration equipment is not recommended by manufacturers.
What to do if the evaporator is pierced with a knife?
Immediately turn off the refrigerator, open the windows (if a flammable refrigerant is used, although in older models R600a in small doses or R134a is more often safe). It is impossible to seal the puncture site with epoxy - repair is required by welding or sealant, followed by vacuuming and refilling.
Where is the evaporator in a two-chamber Atlanta?
In most two-chamber models, the main evaporator is located in the freezer (behind the rear panel). Cold enters the refrigerator compartment through air ducts. Some older models may have used a separate circuit or a foamed evaporator in the wall of the refrigerator compartment.