The appearance of an extraneous hum, hum or sharp clicks in the operation of a household refrigerator is always a signal that something is wrong with the device. It is especially unpleasant when equipment from a brand Atlant, which has traditionally been famous for its reliability and noiselessness, makes noise. Owners are often faced with a dilemma: call a technician if the equipment is under warranty, or try to figure out how to remove the sound themselves, saving time and money.
The physics of the cooling process is always associated with the operation of mechanical components, but normal noise level should not exceed 40 decibels. If the refrigerator starts to hum like a tractor or make whistling sounds, you cannot ignore it. In this material we will analyze the main causes of acoustic discomfort and methods for eliminating them.
It is important to understand that not all sounds indicate a breakdown. Sometimes it is enough to simply adjust the position of the housing or replace the seal. However, there are situations when intervention in refrigeration circuit or replacement of the motor is required.
⚠️ Attention: Any actions related to breaking the seals on the compressor or depressurization of the system automatically deprive you of the right to warranty service. If the refrigerator is new, it is better to immediately contact an authorized service.
Diagnostics of the source of noise: humming, knocking or whistling
The first step in solving the problem is to accurately determine the nature of the sound. Different types of noise indicate completely different components that require attention. Monotonous hum most often comes from the electric motor, while intermittent knocking may be a sign of problems with the compressor suspension or foreign objects.
Often users confuse the sound of operating refrigerant with a malfunction. Gurgling and overflowing of liquid inside the tubes is an absolutely normal physical process of freon circulation. However, if vibration of the housing is added to this, which can be felt by touching the wall, it means that resonance intensifies due to improper installation or wear of parts.
For an accurate diagnosis, put your ear to the back wall of the unit. If the sound comes from there, the problem is in the motor. If noise is heard inside the chambers or from the evaporator side, it may be in the system No Frost or an ice plug.
- 🔊 Humming: Characteristic low-frequency sound of the electric motor, increasing at start.
- 🔨 Knocking: Metallic clanging, often occurring when starting or stopping the compressor.
- 🌬️ Whistling or hissing: A sign of a freon leak or defrosting system fan operation.
- 🧊 Crackling: Usually associated with thermal expansion of plastic or friction of ice on the blades fan.
⚠️ Attention: If you hear a loud bang followed by silence and no cold, immediately unplug the device. This may indicate an interturn short circuit in the compressor windings.
External factors: installation and vibration of the case
Before disassembling the equipment, it is necessary to eliminate common installation errors. A refrigerator Atlant, like any other equipment, requires a flat and stable surface. If the floor is uneven, the housing will warp, which will cause the door to skew and increase the vibration of the motor. In such cases adjusting the supports solves 80% of noise problems.
Pay attention to the distance to the walls and furniture. For normal air circulation and reduced resonance of the rear wall, a gap of at least 5-7 centimeters is required. If the refrigerator is located close to a wall or cabinet, the sound of the compressor will be reflected and amplified, creating the effect of an acoustic trap.
Also check whether the internal shelves or objects installed on them are touching the walls of the chamber. Even slight contact of a glass shelf with the plastic of the case during vibration can create an irritating rattling sound. Make sure that the dishes inside are stable.
☑️ Checking the installation of the refrigerator
Often the cause of the noise is the floor itself. If it is made of wood or has voids, the vibration is transmitted to the entire structure of the house. In this case, it is recommended to place special anti-vibration pads or a thick rubber mat under the legs of the refrigerator. This is a simple but effective way to quench low-frequency vibration without complex repairs.
Problems with the compressor and its mounting
The compressor is the heart of the refrigerator, and it is it that creates the main noise level. Modern models Atlant use fairly quiet motors, but over time their performance may deteriorate. The main cause of knocking is often shock-absorbing springson which the engine is suspended inside the casing.
Over time, the metal of the springs loses elasticity or rusts, and when starting, the compressor begins to beat against the walls of the metal casing. This causes a loud clanging sound. To eliminate this defect, you need to carefully remove the casing (after turning off the power!), inspect the springs and, if necessary, replace them or install additional rubber washers.
Sometimes the noise is caused by itself electric motor. If the shaft bearings have exhausted their service life, a characteristic hum appears, which increases over time. In such a situation, lubricant will no longer help - a complete replacement of the compressor is required. This is a complex procedure that requires evacuation of the system and charging with freon.
| Type of fault | Nature of sound | Difficulty of repair | Required action |
|---|---|---|---|
| Weakening of springs | Loud knocking sound when starting/stopping | Low | Replacing springs, checking casing |
| Wear of bearings | Increasing hum, howling | High | Replacing the compressor |
| Malfunction of the starting relay | Clicks, humming without starting | Medium | Replacement of relay |
| Vibration of tubes | Rattling, ringing | Low | Bending of tubes, installation gaskets |
Is it possible to lubricate the compressor?
Lubricating the refrigerator compressor yourself is impossible and dangerous. The motor is hermetically sealed in a steel housing. Any attempt to drill a hole or cut off the cap will immediately cause refrigerant to escape and moisture to enter the system. Repair of such a unit is not carried out - only a complete replacement of the unit.
Fan noise in the No Frost system
In refrigerators Atlant with the system No Frost the fan located in the freezer is responsible for the circulation of cold air. It is this node that often becomes the source of whistling, humming or crackling. If you hear a sound reminiscent of a computer cooler operating, but louder and with extraneous sounds, the problem is most likely here.
The first and most common reason is ice freezing on the blades or in the rotation zone. When the layer of snow becomes too thick, it begins to touch the fan housing, creating a cracking noise. In this case, the refrigerator must be completely defrosted within 10-12 hours. Often, after defrosting, the noise disappears.
If defrosting does not help, it means that the bearings of the fan itself have worn out or moisture has entered its motor, causing corrosion. In this case, the unit must be replaced. It is important to choose a fan with similar geometric dimensions and power parametersso as not to overload the control board.
- ❄️ Default failure: Failure of the heating element or defrost sensor leads to ice fouling on the fan.
- 🌀 Axis displacement: The fan may move slightly in the seat and touch wall.
- 🔋 Grease aging: The factory grease dries out in the fan motor bearings.
⚠️ Attention: When working with a fan in the freezer, be extremely careful with plastic blades. They become very fragile at low temperatures and easily break if touched carelessly.
Creaks of doors and seals
Sometimes the source of the irritating sound is not in the depths of the unit, but on its periphery. Door squeaking when opening is a common problem that can be solved quite simply. The main reason is friction of plastic on plastic or lack of lubrication in hinge mechanism.
To eliminate squeaking, you need to clean the hinges from old grease and dust, and then apply a special silicone lubricant. It is strictly forbidden to use ordinary oils (sunflower oil, motor oil) - they thicken over time, stick to dust and can ruin the plastic or rubber seal.
Also the source of the whistle can be itself rubber seal. If it is dry or dirty, when closing the door, air may escape with a characteristic sound, or the rubber will rub against the body. Wipe the seal with a soft cloth soaked in a warm soapy solution, and then treat it with a special rubber conditioner or talcum powder.
Check whether the door touches the protruding parts of the case or shelf. If adjusting the hinges does not help eliminate the misalignment, the door itself may have become deformed due to overload or mechanical shock.
When you need to call a technician
There are a number of situations when trying to remove the sound with your own hands can lead to even more costly consequences. If you do not have the skills to work with electrical appliances and tools, it is better not to take risks. Professional diagnostics are necessary if the noise is accompanied lack of cold or frequent shutdowns of the device.
A technician will be needed to replace the compressor, eliminate freon leaks or repair the electronic control board. These operations require special equipment: a pressure gauge station, a vacuum pump, a blowtorch and testers. It is practically impossible to independently perform charging with refrigerant high-quality and safe.
It is also worth contacting the service if the refrigerator is under warranty. Even if you are sure that you can fix the defect yourself, breaking the seals will result in a denial of warranty service. Saving on repairs can result in a complete loss of the warranty on expensive equipment.
Why did the Atlant refrigerator start to hum loudly after 5 years of operation?
After 5 years of operation, rubbing parts naturally wear out: compressor bearings, fan bushings, motor suspension springs weaken. The capillary tube could also become clogged, which causes the compressor to work with increased load and noise.
Is it possible to make a refrigerator operate completely silently?
Completely silent compression refrigerators do not exist. A noise level of up to 40 dB is considered normal. Only absorption refrigerators can provide absolute silence, but they are less efficient and are rarely used in kitchens. The owner’s task is to reduce the noise to a comfortable level, killing vibration and faulty components.
Is frequent switching on and off harmful for the compressor?
Yes, it is harmful. The compressor takes time to equalize the pressure in the system. Frequent starts (less than 5-10 minutes after stopping) lead to the engine operating in overload mode, overheating of the windings and rapid failure of the starting relay. If your refrigerator is “taktuje” (frequently turns on and off), you need to look for the cause in the thermostat or freon leak.
To summarize, we can say that most problems with noise in refrigerators Atlant are solvable. Start with the simplest steps: checking the installation, defrosting and visual inspection. If these measures do not help, and the nature of the sound indicates a mechanical failure, do not delay a visit to the service center. Timely repairs will prolong the life of your kitchen assistant.