An annoying creaking refrigerator can turn a cozy kitchen into a source of constant stress. When an appliance makes strange noises, the first instinct is to immediately do something about it. However, panic is not the best guide here, since improper lubrication can aggravate the situation.
Before grabbing a can of lubricant, you need to accurately determine the source of the sound. A refrigeration unit is a complex system where not only rubbing parts can make noise, but also a vibrating compressor or even incorrectly installed shelves. Diagnostics is a key stage on which the success of the entire event depends.
In this article we will analyze in detail which components really require lubrication, and which only imitate creaking due to vibration or thermal expansion. You will learn which materials are safe for food areas, and which absolutely cannot be used in domestic conditions.
Localization of the sound source: where exactly does it creak?
First of all, you need to understand the nature of the sound. A squeak is a high-frequency friction sound, but in a refrigerator it is often confused with a humming or cracking sound from plastic. Stand next to the operating unit and listen. If the sound comes from behind, where it is located compressorthen the problem may be in its operation or fastening.
If the sound comes from the front, most likely the problem is in the door hinges or seal. The refrigerator door opens hundreds of times a day, and over time, the factory lubricant in the mechanisms dries out. Also, the source may be the friction of the rubber on the body when opening.
Sometimes internal elements make a creaking sound: shelves, drawers or trays. When the motor vibrates, they can move and rub against the walls of the chamber. To eliminate this option, try gently pressing the shelf while the refrigerator is running. If the sound has changed or disappeared, then you just need to correct the contents.
⚠️ Attention: Never try to lubricate a compressor or electrical parts running on mains power. This may result in a short circuit or fire.
Lubricating door hinges: step-by-step instructions
If you determine that the source of noise is located in the area of the doorway, you will need to lubricate the hinges. This is the most common cause of squeaking in refrigerators older than 3-5 years. To begin with, the door must be removed, since it is almost impossible to properly process the mechanism in the assembled state.
For work, you will need a screwdriver (usually a Phillips or hexagon, depending on the model Bosch, LG or Indesit) and a suitable lubricant. Carefully unscrew the top hinge mounting bolts, remove the door and place it on a soft surface so as not to damage the coating.
Clean the hinge axis from old, dried grease and dust. Now apply the new compound. It is important to distribute it evenly over the entire surface of the rubbing parts. After assembly, check the door movement: it should open smoothly and silently.
☑️ Checklist for lubrication of hinges
What to lubricate: choosing the right material
The question “what to lubricate” is critical. Regular sunflower oil or solid oil will not work here. Oil oxidizes over time, turning into a sticky mass and collecting dust, which will only increase friction. Solid oil can thicken at low temperatures inside the chamber.
The ideal choice is silicone grease. It is inert, is not afraid of temperature changes, is not washed off with water and is safe for rubber seals. You can also use Teflon lubricants (PTFE), which create a slippery film, or specialized food-grade lubricants.
The table below compares different types of lubricants for refrigeration equipment:
| Lubricant type | Temperature range | Safety for rubber | Recommendation |
|---|---|---|---|
| Silicone | -50°C to +200°C | Safe | Recommended |
| Lithium (Litol) | -40°C to +120°C | May be corrosive | Only for metal |
| Mineral oil | 0°C to +60°C | Safe | Not recommended (dries) |
| WD-40 (classic) | -50°C to +100°C | Harmful | Prohibited (dissolves rubber) |
Pay attention to the labeling of the can. If you are processing the seal or parts inside the chamber, the packaging should indicate that the product non-toxic and safe for contact with food. This ensures that chemical vapors do not get into the food.
Eliminating the creaking of the compressor and pipes
If the creaking comes from the back of the refrigerator, where the motor is located, the situation is more complicated. Often the sound is produced not by the compressor mechanisms themselves, but by the condenser tubes, which can vibrate and rub against each other or against the housing. The vibration is transmitted through metal lines and intensifies, creating a creaking or ringing effect.
To fix this problem, you need to carefully move the refrigerator away from the wall and gain access to the rear grille. Turn on the light and watch the tubes while the motor is running. If you see how they touch, you need to carefully separate them with your hands.
To prevent repeated contact, you can use a piece of foam rubber, rubber or special vibration-isolating material. Place it between the pipes. Also check the fastening of the compressor itself: the bolts may become loose due to vibration, and they just need to be tightened.
⚠️ Attention: When working with the rear panel, be extremely careful. The condenser tubes are thin and easily damaged. A breakdown of the tube will lead to a freon leak and costly repairs.
If the compressor itself creaks (inside the black “tank”), then this is a sign of wear on the internal mechanical parts or electrical problems. In this case, external lubrication will not help. Replacing the compressor is the only way out, but this is a job for professionals.
Creak during defrosting: normal or breakdown?
Many owners of modern refrigerators with the system No Frost notice periodic crackling or creaking during operation. Often this sound appears cyclically, approximately once every 8-12 hours. This is due to the automatic defrosting process.
When the heating element is heated, the ice on the evaporator melts, and plastic parts and metal tubes expand or contract due to temperature changes. This sound is called a "thermal click" or "thermal squeak". It is absolutely normal and does not require intervention.
However, if the sound becomes too loud, reminiscent of grinding metal, an ice plug may have formed in the water drainage system, or the fan is touching ice. In such cases, it is necessary to completely defrost the refrigerator within 24 hours with the doors open.
Why does ice squeak?
When ice melts, it changes its structure and can make sounds similar to creaking or crackling, especially if it has frozen on the plastic elements of the air duct.
Prevention and care seals
The rubber seal (cuff) around the perimeter of the door can also be a source of unpleasant sounds, especially if it is dry. Over time, the rubber loses its elasticity and begins to “stick” to the metal body when closing, producing a squelching or creaking sound.
To care for the seal, use a special silicone grease for rubber. Apply a small amount to a soft cloth and wipe the entire surface of the cuff. This will restore its softness, improve fit and extend its service life.
Regular cleaning of the seal from grease and dirt also prevents sounds. Dirty rubber adheres worse, and the refrigerator begins to work more intensely, which indirectly affects the overall noise level in the room.
Following simple maintenance rules will allow you to avoid expensive repairs and enjoy silence in the kitchen. Remember that timely diagnosis and the right materials are the key to the long life of your equipment.
Frequently asked questions (FAQ)
Is it possible to use machine oil to lubricate refrigerator hinges?
Using regular machine oil is not recommended. It tends to spread, stain clothes and the floor, and over time it thickens and turns into an abrasive mass, which will only increase wear on the hinges. It is better to use lithium or silicone-based lubricants.
The refrigerator began to creak after defrosting, what should you do?
If the creak appeared immediately after defrosting, let the refrigerator stand turned off for a few more hours. Perhaps there is moisture left in the mechanisms, or the ice has not completely melted in the hidden cavities. If the sound does not pass through after a day of operation, check whether the tubes have frozen to the back wall.
How often should you lubricate the hinges of the refrigerator?
It is recommended to carry out preventive lubrication of the hinges once every 2-3 years, or when the first signs of squeaking appear. If you live in a humid climate, you can check more often, as moisture washes away the grease more quickly.
Is it hazardous to health if the grease gets on food?
If you used a specialized silicone grease labeled “food grade” or “for food processing,” it is inert and non-toxic. However, in any case, it is better not to eat foods that have been exposed to technical liquid to avoid poisoning.
Does a new refrigerator squeak?
A new refrigerator may crack slightly in the first days of operation due to thermal expansion of materials. However, a loud creaking or hum is not typical for new equipment. If the sound is strong, check the shipping bolts on the compressor - they must be removed before turning them on.