A sudden hum or obsessive knocking in the kitchen can unsettle any person, especially if it happens at night. Refrigerators of the brand Atlant are deservedly considered one of the most reliable units in the post-Soviet space, however, even the highest quality equipment requires attention over time. If your Atlant refrigerator started to make unusual sounds, this is not always a signal of a critical breakdown that requires expensive repairs.
Primary diagnostics allows you to determine whether you can deal with the problem yourself or whether you need to call a technician. Often the reason lies in improper installation or natural wear of individual parts, such as bushings or shock absorbers. In this article, we will examine in detail the main causes of noise, methods for eliminating them, and situations when specialist intervention becomes inevitable.
Understanding the nature of sounds will help you save time and money, as well as extend the life of your household appliance. It is important to listen carefully to the nature of the noise: it can be a monotonous hum, periodic clicks, a whistle or a loud knock. Each of these signals indicates a specific area that requires inspection.
Natural and operating noise: when there is no need to worry
Before sounding the alarm, it is necessary to eliminate the normal operating sounds that a working unit makes. Modern models operating on refrigerants like R600a or R134acan produce specific gurgling or liquid overflow. This is the sound of freon moving through the pipeline system, which is especially clearly heard in models with the system No Frost or at the first start after defrosting.
It is also worth considering the operating features of the compressor. When the motor is turned on or off, characteristic clicks may be heard - this is when the thermal protection relay is triggered. If the refrigerator Atlant has two compressors, then sounds can come from each of them independently, creating the illusion of constant operation of the equipment. The hum of a running motor up to 40 dB is considered normal for most household models.
However, if the noise level has increased sharply compared to the previous months of operation, it is worth carrying out a simple check. Make sure that the unit is not placed close to a wall or furniture, which creates resonance.
It is important to distinguish between constant background noise and intermittent sounds. For example, ice cracking in the freezer during automatic defrosting is absolutely normal. But if the crackling noise is heard from the engine compartment, this may indicate problems with the electrical or mechanical parts of the compressor.
Installation problems and vibration of the housing
One of the most common reasons why the refrigerator is hummingis its incorrect location. Vibration from a running compressor is transmitted to the housing, and then to the floor and walls, increasing significantly. If the legs of the unit are not adjusted and it is unstable, vibration will cause the doors and internal shelves to rattle.
Check the distance to the nearest objects. The instructions for the models Atlant recommend leaving a gap of at least 5-10 cm from the back wall to the furniture. This is necessary not only for air circulation, but also to prevent resonance. Touching the vibrating body to the wall turns the entire structure into a speaker, amplifying the sound many times over.
- 🔧 Check the adjusting supports: they should fit snugly to the floor, eliminating wobbling.
- 🚫 Make sure that the refrigerator does not touch the walls, curtains or nearby furniture.
- 🧊 Inspect the internal shelves and containers: they should not hang in the grooves.
Users often forget about the shipping container. If you have recently transported your refrigerator, check that all securing bolts and tapes have been completely removed. Sometimes fastening elements may remain inside the compressor, which begin to rattle during operation.
☑️ Installation diagnostics
If after leveling and moving the equipment the noise does not stop, the problem may lie deeper. In some cases, even a properly installed unit can transmit vibration to the floor due to the characteristics of the floor covering or the design of the house itself.
Diagnostics of the compressor: the heart of the refrigerator
The compressor is the main source of noise in any refrigerator. Units Atlant usually have reliable motors, but they are also subject to wear. If you hear a loud, increasing hum that does not subside even when you open the door, the compressor may be working under increased load or has failed.
One of the common reasons for increased sound is wear of the motor. Over time, the rotor bearings wear out and play appears, which leads to metallic clanging or strong vibration. It is also worth paying attention to the start relay. If it is faulty, the compressor may hum but not start, or start with a loud click and hum.
⚠️ Attention: If the compressor hums but does not start, and after a while the shutdown click is heard, immediately unplug the refrigerator. Continuing to operate in this mode can lead to burnout of the motor windings.
To accurately diagnose the condition of the compressor, you can use a multimeter to check the resistance of the windings. However, if you do not have experience working with electrical appliances, it is better to limit yourself to an external inspection. Check whether the motor is overheating (it should not burn your hand, but it must be warm).
| Sound type | Probable cause | Necessary actions |
|---|---|---|
| Monotonous hum | Normal operation or vibration of the housing | Check the installation, move it away from the wall |
| Metal clanging | Wear of compressor bearings | Replacement of the compressor by a technician |
| Frequent clicks | Malfunction of the start relay | Replacement of the relay (available for self-repair) |
| Whistling or hissing | Freon leak or problem with the capillary | Call a technician for leak detection |
It is important to understand that replacing a compressor is a complex process that requires special equipment for evacuation of the system and charging with freon. It is almost impossible to perform this operation efficiently on your own.
Compressor bushings: the hidden cause of rattling
In the design of refrigerators Atlant the compressor is attached to the frame through special rubber-metal bushings (shock absorbers). Their task is to dampen the vibration of a running motor. Over time, the rubber dries out, cracks or completely breaks down. As a result, the metal part of the bushing begins to touch the frame or housing of the compressor, causing characteristic rattling and knocking.
It is not difficult to diagnose this problem. With the refrigerator running, carefully (observing safety precautions!) touch the motor housing or lightly press on it. If the noise changes or disappears, it means that the vibration is transmitted due to the lack of proper shock absorption. Also visually inspect the bushings: they should not be flattened or cracked.
Replacing bushings is one of the simplest and cheapest repair procedures that you can do yourself. You will need to purchase a set of new shock absorbers that match your model Atlant refrigerator. The process takes no more than 15-20 minutes.
Procedure for replacing bushings
Disconnect the refrigerator from the mains|Remove the rear cover of the engine compartment|Loosen the compressor mounting bolts|Remove the old bushings and install new ones|Tighten bolts and check operation
Sometimes owners try to temporarily solve the problem by placing pieces of rubber or thick fabric under the bushings. This may help in the short term, but it is better to install new parts immediately to avoid displacement of the compressor and damage to the tubes.
Fan and No Frost system
If your Atlant equipped with an automatic defrost system No Frostthe fan may be the source of the noise. It circulates cold air in the chamber. Over time, the fan bearings wear out, which leads to humming, howling or crackling.
Another common problem is ice freezing on the fan blades or on the evaporator. The ice crust can touch rotating parts, creating a rhythmic knocking or cracking sound. This often happens if the refrigerator door has been open for a long time or the seal does not fit well, allowing moist air to pass through.
- ❄️ Defrost the refrigerator completely (at least 24 hours) and check if the noise has disappeared.
- 🌀 Check the free movement of the fan blades (manually, with the power off).
- 🔍 Inspect the evaporator for the presence of ice and check the operation of the defrosting heating element.
If, after complete defrosting and clearing of ice, the fan continues to make noise, it must be replaced. In some models Atlant the fan can be lubricated, but this only gives a temporary effect. It is better to install a new part immediately so as not to risk overheating the fan motor.
⚠️ Attention: Do not try to lubricate a running fan with oil directly through the grille. This may short out or damage the plastic. Remove the unit for maintenance.
Operating rules to reduce noise
Following simple operating rules will help reduce noise and extend the life of your refrigerator Atlant. Do not overload the shelves as this may upset the balance and cause dishes to rattle. Products should not touch the back wall of the chamber where the evaporator is located.
Regularly check the cleanliness of the condenser (the grille at the back of the refrigerator). Dust and animal hair clog the cells, forcing the compressor to work longer and harder, which increases the noise level. Cleaning should be done with a soft brush or vacuum cleaner once every six months.
Also monitor the condition of the rubber seals on the doors. If they allow heat to pass through, the compressor will turn on more often and work longer, which will inevitably lead to an increase in the total time of noise load on your ears.
Frequently asked questions (FAQ)
Why does the new Atlant refrigerator work loudly in the first days?
New units may work louder due to grinding in parts compressor and lack of operating experience of the owner, who is accustomed to old, quiet equipment. Also, the new refrigerator may not be installed correctly. If after 3-5 days the noise does not subside, check the installation and bushings.
Is it possible to replace the compressor in the Atlant refrigerator yourself?
Theoretically, it is possible if you have the skills to solder copper tubes, a vacuum pump and a pressure gauge station. However, without experience, there is a high risk of damaging the system or incorrectly calculating the dosage of freon. It is recommended to entrust this task to professionals.
The refrigerator clicks but does not turn on. What to do?
Most likely, the starting relay has failed or the compressor has jammed. Try turning off the refrigerator from the network for 15-20 minutes, then turning it on again. If the clicks are repeated, but there is no cold, call a technician to replace the relay or diagnose the motor.
Is it normal for the refrigerator to gurgle after defrosting?
Yes, this is normal. The sound of flowing liquid (freon) is heard when the system is filled with refrigerant after being idle or defrosted. This indicates proper circulation of the substance in the circuit.