The situation when a refrigerator Atlant begins to make unusual sounds is familiar to many owners of this equipment. Humming, vibration or periodic clicking can turn the kitchen or living room into a source of constant irritation, disturbing the peace of the residents. It is important to understand that normal noise level for modern models varies between 35-40 dB, however, over the years of operation these figures can increase due to wear of parts or violation of installation rules.
Before calling a technician or planning to purchase a new unit, it is worth checking self-diagnosis. In most cases, especially if we are talking about models with compressor an old model or an incorrectly positioned housing, the problem can be solved without complex intervention. However, ignoring sudden changes in the sound profile of the equipment can lead to serious damage to the cooling system.
In this article we will analyze in detail the mechanical and technical causes of noise, methods for eliminating them and preventive measures. You will learn how to distinguish the harmless seething of refrigerant from the harbingers of motor failure, and what simple actions will help restore silence to your home.
⚠️ Attention: If a loud sound is accompanied by a complete absence of cold in the chambers or the appearance of a burning smell, immediately unplug the device and contact a service center.
Primary diagnosis: normal or malfunction?
The first step in the fight against noise is to determine its nature. Refrigerators Atlant, especially two-compressor models, produce a number of sounds during operation that are considered standard. For example, a quiet gurgling or hissing indicates circulation freon through the pipes of the system, which is a necessary condition for maintaining a low temperature.
However, there are sounds that clearly indicate problems. A uniform hum can turn into an increasing roar if the fan begins to touch frozen ice or a foreign object with its blades. You should also be wary if you hear metallic clangs or frequent relay clicks that repeat every few minutes without switching to operating mode.
To accurately assess the situation, try placing your hand on the case at different points. If you feel a strong trembling that is transmitted to the floor or furniture, then the problem lies in vibrations. If the housing is quiet, but the sound comes from inside the unit, most likely the problem is in the internal components of the compressor or the defrost system.
Correct installation as a way to reduce noise
Often the cause of excessive noise is not a breakdown, but a banal violation of the installation rules. The refrigerator Atlant must stand on a perfectly flat and hard surface. If the floor is distorted or the coating is too soft (for example, linoleum with a thick backing), the housing will sway, causing resonance and increasing the hum of the motor.
It is critical to check the horizontal installation using a building level. Adjustment is carried out by twisting or unscrewing the front support legs. A correctly aligned unit should not wobble when lightly pressed on the corners, and the doors should close on their own when opened to 45 degrees.
☑️ Checking the installation
Another important aspect is the distance to the walls and furniture. The rear condenser grille requires free space for heat exchange. If the refrigerator is moved close to the wall, vibration is transmitted to the building structures of the house, turning them into a speaker, which enhances the low-frequency hum.
Mechanical causes of vibration and humming
If the installation is perfect, but the noise persists, it is worth looking for mechanical defects. Over time, fasteners weaken and rubber shock absorbers lose their elasticity. In models Atlant with the No Frost system, a common cause is a loose fanfan that pumps in cold air.
It is also worth checking the fastening of the compressor itself. The motor is suspended on springs or bolted through rubber washers. If the metal of the springs has rusted and burst, or the rubber gaskets have dried out, the compressor begins to vibrate against the metal housing, creating a characteristic rattling sound.
| Type of sound | Probable cause | Difficulty of elimination |
|---|---|---|
| Monotonous hum | Improper installation, compressor wear | Low |
| Knock and clanging | Touching of pipes, damage to motor mount | Average |
| Whistling or howling | Fan malfunction No Frost | Average |
| Crackling of plastic | Thermal expansion of materials | Safe |
Pay special attention to the pipes coming from the compressor. With prolonged vibration, they can shift and begin to touch each other or the body. To eliminate it, carefully enough, trying not to damage the thin metal, separate the tubes or place a piece of porous material between them porous material.
⚠️ Attention: Be extremely careful when working with copper tubes! Their damage will lead to an immediate release of freon and will require an expensive refill from a specialist.
Problems with the No Frost system and fan
Refrigerators Atlantequipped with a complete defrosting system (No Frost) have an additional source of noise - the evaporator fan. During operation, ice may accumulate on the blades, especially if the door seal is worn out and allows moist air to pass through. The ice crust disrupts the balancing of the impeller, causing humming and knocking.
To test this hypothesis, you need to defrost the refrigerator for 10-12 hours. If after switching on the noise disappears or becomes much quieter, then the problem lies in freezing. However, if the sound returns after a couple of days, the fan motor bearing may have failed.
How to lubricate the fan without disassembling it?
In some cases, you can drop a couple of drops of machine oil into the hole of the fan shaft through the drainage hole without removing the back panel, but this is a temporary solution.
The motor may also make noise damper that regulates the flow of cold air. If the mechanism jams, it begins to hum, trying to open or close the channel. In such cases, it is necessary to replace the unit or lubricate it with graphite grease, if the design allows this.
Diagnostics of the compressor and start relay
The heart of any refrigerator is the compressor. Models Atlant install both reliable piston units and more modern inverter motors. If the compressor begins to peddle, making sounds similar to the operation of a tractor, this indicates serious wear of the internal mechanical parts.
Frequent clicks following an attempt to start the engine indicate a malfunction. start relay. This device is responsible for starting the motor windings. If the relay does not operate correctly, the compressor hums for a few seconds, then a shut-off click is heard and the cycle repeats. You cannot operate the equipment in this mode - the winding will burn out.
Inverter compressors, which are found in new lines, operate almost silently, smoothly regulating power. If such a motor begins to make noise, this is often due to problems in the electronic control unit or power surges in the network.
The influence of refrigerant on acoustic comfort
Many users mistake the sounds of refrigerant circulation for a breakdown. In fact, gurgling, fluid pouring and even short whistling sounds are normal physical phenomena. Gaseous and liquid freonpassing through narrow capillaries and an expansion valve, creates turbulent flows.
These sounds are especially noticeable immediately after opening the door, when warm air enters the chamber and the cooling system goes into active mode. In modern models Atlantwhere environmentally friendly refrigerants are used (for example, R600a), the pressure in the system is lower, but the flow rate is higher, which can make the sounds more sonorous.
However, if the gurgling becomes constant and is accompanied by a lack of cold or, conversely, excessive cooling, this may indicate a gas leak or capillary tube blockage. In such cases, the intervention of a specialist with a pressure gauge manifold is required.
Prevention and care of equipment
In order for your refrigerator Atlant to serve for a long time and quietly, it is necessary to regularly carry out preventive measures. Once every six months it is recommended to check the tightness of the door seal. Dirt and grease that accumulate on the rubber band disrupt the tightness, causing the compressor to work more often and more intensely.
It is also important to monitor the cleanliness of the condenser grille at the back of the unit. A dust “coat” several millimeters thick impairs heat transfer, the motor overheats and begins to operate at higher speeds, creating more noise. It is better to clean with a soft brush or vacuum cleaner.
- 🧹 Wipe the rubber seals with a damp cloth once a month.
- 🌡️ Do not place hot food in the chamber so as not to provoke long operation of the motor.
- 🔌 Maintain stability voltage in the network using a surge protector.
- ❄️ Carry out a complete defrost at least once a year, even for the No Frost system.
Why does the Atlant refrigerator hum loudly only at night?
At night, the overall level of background noise in the apartment decreases, and the sounds of operating equipment become more noticeable. In addition, at night the voltage in the electrical network may stabilize or, conversely, jump, which affects the operation of the motor. Also during the day, the sound can be masked by a running TV or conversations.
Is it possible to soundproof a compressor yourself?
Sealing the compressor with soundproofing materials is strictly prohibited, as this will disrupt its cooling and lead to overheating and a fire. It is only permissible to install rubber anti-vibration pads under the motor feet, if the design allows it.
How long should the compressor operate normally?
Under normal conditions, the compressor operating cycle is approximately 15-20 minutes, followed by a pause of 30-40 minutes. If the motor turns on more often or works without stopping, this is a sign of a malfunction of the thermostat, a freon leak or problems with heat transfer.
Does the fullness of the chambers affect the noise level?
Yes, it does. An empty refrigerator operates with shorter cycles, but the food in the chambers acts as a cold accumulator and sound insulation. Full shelves can slightly reduce the resonance inside the chamber, making the unit operate quieter.