The appearance of an extraneous hum, whistle or increasing howl in the freezer compartment of the refrigerator Atlant often indicates problems with the forced air circulation system. In models equipped with technology No Frost, a special fan installed behind the rear wall of the evaporator is responsible for the uniform distribution of cold. Over time, the factory grease in the bearings dries out, and ice dust settles on the blades, which leads to friction and characteristic noise.
Ignoring this symptom can lead to overload of the compressor or complete jamming of the motor, which will require an expensive replacement of the unit. Fortunately, in many cases, it is enough to carry out preventive maintenance: remove the cover, clean the mechanism and apply a new lubricant. It is critical to use only frost-resistant lubricants that remain fluid at temperatures down to -40°C, otherwise the mechanism will jam again in a few days.
Before proceeding with disassembly, it is necessary to de-energize the unit and prepare the workplace. In this article, we will analyze in detail the process of dismantling the evaporator, diagnosing the fan and correctly applying lubricant for models of Atlant various series.
Diagnostics of the fault and preparation of tools
The first step in eliminating noise is to accurately determine the source of the sound. In refrigerators Atlant not only the evaporator fan can make noise, but also the condenser fan (located at the bottom rear) or the compressor itself. If the hum comes from the freezer and intensifies when the door is opened (in some models) or, conversely, subsides, the problem is almost certainly in the evaporator blower motor.
To carry out the work, you will need a standard home repair kit. There is no need to buy specialized equipment, but having the right tools will make the task much easier and reduce the risk of damaging the plastic fasteners. Pay special attention to the choice of lubricant, since household oils like WD-40 are absolutely not suitable here.
The necessary tools include:
- 🔧 A set of screwdrivers (phillips and flat) for removing panels.
- ❄️ Hair dryer (construction or household) for defrosting ice.
- 🧴 Frost-resistant grease (silicone or Teflon).
- 🧹 A brush with soft bristles and rags for cleaning.
It is important to understand that the work will be done in conditions of low temperatures and limited space. Plastic in the freezer becomes fragile, so all manipulations should be carried out carefully, without using excessive physical force.
⚠️ Attention: Before starting any work, be sure to disconnect the refrigerator from the power supply! Working with live electrical appliances is life-threatening.
Choosing the right lubricant
One of the most common mistakes when repairing household appliances is the use of unsuitable lubricants. Regular engine oil, grease, or the popular WD-40 liquid thickens at low temperatures, turning into a viscous mass or even solidifying. This leads to the fact that after a short time the fan starts humming again or stops completely.
For refrigerators Atlant it is necessary to use compounds that retain their properties over a wide temperature range. The optimal choice is synthetic lubricants based on silicone or Teflon. They do not freeze at -50°C, are not washed off by condensation and are inert to plastic and rubber.
A comparison of popular types of lubricants is presented in the table below:
| Lubricant type | Operating temperature | Compatibility with plastic | Recommendation |
|---|---|---|---|
| Machine oil | from -10°C to +80°C | High | Not suitable |
| WD-40 (spray) | from -50°C to +100°C | Medium (corrodes) | For cleaning only |
| Solidol/Litol | from -20°C to +60°C | Low | Not recommended |
| Silicone grease | from -60°C to +200°C | High | Ideal |
You can purchase a high-quality composition in auto stores or specialized departments for refrigeration equipment. Look for "low temperature" or "food grade" labels if there is a risk of contact with food, although in an insulated motor this is less critical.
Procedure for disassembling the freezer compartment
Access to the fan in refrigerators Atlant is usually hidden behind the back panel of the freezer compartment. The disassembly process may differ depending on the specific model, but the general algorithm of actions remains similar. First, you need to completely empty the chamber of food and remove all shelves and drawers.
Next you should remove the ice. Even if there is little visible snow, there may be a significant layer of ice hidden behind the plastic panel, making removal difficult. If you try to remove the panel by force, you may break the plastic latches or damage the evaporator tubes.
Use a hair dryer to gently heat the back wall. Do not direct the hot air stream at one area for too long to avoid deforming the plastic. 5-10 minutes are enough for the ice to melt and the panel to come off easily.
After defrosting, proceed to remove the fasteners:
- 🔩 Unscrew the visible screws holding the back panel.
- 🔍 Check for hidden plugs, under which there may be additional screws.
- 🖐️ Gently pull the panel towards you, releasing the plastic fasteners around the perimeter.
In some models Atlant the fan is fixed directly to the panel, in others - by a separate block on the chamber wall. Be careful when disconnecting the wires leading to the sensors and the motor.
☑️ Preparation for disassembly
Removing and cleaning the fan
After removing the protective panel, you will see the evaporator and the fan located next to it. Visually assess the condition of the node. Often the cause of noise is not only the lack of lubrication, but also the freezing of ice on the blades, which creates imbalance and beating.
To remove the motor, you must disconnect the electrical connector. It is usually secured with a latch that must be pressed before pulling out the chip. Next, the screws securing the fan housing to the bracket or chamber wall are unscrewed.
Cleaning the parts is an important step that cannot be ignored. Old dried grease mixes with dust and turns into an abrasive mass. It must be completely removed.
The cleaning process includes:
- 🧼 Washing the plastic blades in warm water with detergent.
- 🌬️ Blowing out the motor housing with compressed air or thorough cleaning with a brush.
- 🔍 Checking the shaft for play and corrosion.
If the fan shaft has strong lateral play (swings from side to side), this indicates critical wear of the bushings. In this case, lubricant can only give a temporary effect, and it is better to replace the unit.
⚠️ Attention: Do not pour water directly onto the electrical part of the motor. Moisture inside the winding will cause a short circuit when turned on.
What to do if the fan cannot be removed?
Sometimes the mounting screws can be hidden under a layer of ice or paint. Also check to see if the mechanism itself is jammed with ice. If the screws are torn off, try to carefully pry the housing with a flat-head screwdriver at the fastening points, but act carefully so as not to split the plastic.
Bearing lubrication technology
The most crucial moment is applying a new lubricant. In refrigerator fans Atlant slide bushings (sliding bearings) are most often used, and less often - ball bearings. It is the axis of rotation and the space inside the bushing that need to be lubricated.
Remove the impeller from the shaft if the design allows this to be done without damage. If the fan is non-separable or the impeller is tightly seated, lubricant is carried out through the technological holes in the motor housing or at the shaft exit.
Apply 2-3 drops of silicone grease to the shaft. Rotate the shaft several times by hand so that the compound is distributed over the entire friction surface. Remove excess lubricant with a dry cloth so that they do not scatter during operation.
Sequence of actions:
- Drop the lubricant onto the base of the shaft.
- Rotate the shaft in different directions for 30-60 seconds.
- Add another drop if the lubricant is completely absorbed.
- Make sure that the shaft rotates easily and quietly.
After lubrication, reassemble the assembly in the reverse order. Make sure that the wires do not get under the fan blades when rotating.
Assembling and testing the refrigerator
The final stage is installing all the elements in their places. Install the fan onto the bracket, connect the power connector and secure the evaporator panel. Make sure all screws are tight and the plastic latches click into place.
Do not rush to load food. Plug in the refrigerator and listen to it work. There may be a slight noise in the first few minutes until the lubricant is completely distributed, but it should disappear quickly. The hum and vibration should disappear.
Check the quality of cooling within a few hours. If the fan operates silently and the temperature in the chamber drops to the specified values, the repair can be considered successful.
Frequently asked questions from users:
- 🤔 How often should the fan be lubricated? — When using high-quality lubricant, the procedure is required no more than once every 3-5 years.
- 🤔 Can I use graphite grease? — It is possible, but it is black and can stain the inner walls, silicone is preferable.
- 🤔 Why does the fan make noise immediately after defrosting? — Perhaps water got into the bearing and froze. You need to let the unit stay turned off longer.
Regular maintenance prolongs the life of the compressor and keeps food fresh.
Is it possible to lubricate the fan without removing it completely?
In some models Atlant there is a gap between the fan housing and the evaporator. You can try dropping lubricant through a thin tube (for example, from a syringe) directly onto the axis of rotation, actively turning the blades with your finger. However, this method is less effective, since it does not allow the removal of old dirt.
What to do if the noise remains after lubrication?
If the lubrication did not help, most likely the bearing has exhausted its service life mechanically (works have appeared on the shaft or in the bushing). In this case, only replacing the fan motor with a new one will help. Also check whether the blades are touching ice or wires.
What is the service life of the Atlant refrigerator fan?
The average service life of a high-quality fan is 7-10 years. However, under conditions of constant changes in temperature and humidity, the resource may decrease. Timely lubrication can extend the life of the unit up to 2 times.