Owners of premium German appliances often wonder whether their unit needs regular defrosting, given the advanced moisture removal systems. Refrigerators Liebherr are indeed equipped with technologies NoFrost or DuoFrostthat minimize the formation of ice in storage chambers. However, even the most modern models require periodic complete shutdown for general cleaning and maintenance of internal components.
The process of stopping the compressor and subsequent defrosting is necessary not only to remove ice, but also to disinfect the space where products are stored. Ignoring this procedure may result in unpleasant odors, bacterial growth in drainage channels and reduced energy efficiency of the device. In this article, we will analyze in detail the algorithm of actions that will help you safely prepare equipment for washing.
You need to understand that mechanical chipping of ice is strictly prohibited by the manufacturer, as this can damage the evaporator. Proper operation involves natural defrosting when the power is turned off. Let's look at the preparatory stage, which is often overlooked, although it is critical for the safety of food and ease of work.
Preparing the refrigerator for defrosting
The first step before turning off the power is to empty the chambers of the contents. All perishable items should be removed and stored in a cool place, or use insulated containers with ice if you plan to take a long time to clean. You also need to remove all removable elements: shelves, drawers for vegetables, bottle holders and egg trays.
It is better to wash these parts separately under running water using mild detergents. While they dry, the inner walls of the chamber will be available for processing. Pay special attention to the rubber seals on the doors, where dirt and mold often accumulate. Gently wipe them with a damp cloth without using aggressive chemicals.
- ❄️ Prepare several large towels or absorbent rags to collect melt water.
- 🧼 Purchase a special refrigerator cleaner in advance or prepare a weak soda solution.
- 🔌 Make sure the power cord is long enough for easy access to the outlet.
- 🧤 Wear rubber gloves if you plan to use cleaning products.
⚠️ Attention: Before starting work, be sure to check the condition of the drainage hole in the refrigerator compartment. If it is clogged, water may flow inside the housing, which will require professional intervention.
Proper shutdown of power and electronics
After the cameras are released, it is necessary to correctly shut down the electronics. In modern models Liebherr with touch controls or display SmartDevice you should first turn off the device through the menu, if such a function is provided for in the instructions. This will allow the system to complete the current cycles and correctly save the settings.
If the model is equipped with mechanical regulators or simple electronic control, it is enough to move the temperature regulator to the “0” or “Off” position. Only after this can you unplug the cord from the outlet. An abrupt loss of power to a running compressor is undesirable, although modern starting relays have protection; it is better to follow the sequence.
It is important to let the equipment “settle” before washing. The compressor and refrigerant must come into balance. Do not try to speed up the defrosting process with a hairdryer or hot water - this may deform the plastic parts and damage the evaporator tubes. The natural process will take from 3 to 12 hours, depending on the amount of ice.
Features of defrosting the NoFrost system and DuoFrost
Many users mistakenly believe that the system NoFrost does not require defrosting at all. Yes, it prevents the formation of a snow coat on the walls, but moisture still condenses and is removed through a hidden drainage. Over time, an ice plug may accumulate in hidden channels behind the evaporator, which cannot be removed without complete thawing.
In models with the system DuoFrost the refrigerator compartment has a drip defrosting system, and the freezer has a NoFrost system. This means that ice may occasionally appear on the back wall of the refrigerator compartment. When completely defrosted, the water from this compartment will flow into the groove, from where it will go through the drainage hole into the container above the compressor.
If you notice that after defrosting the water does not leave or stands in a puddle inside the chamber, the drainage channel may be clogged. In this case, it can be carefully cleaned with a special brush or soft wire wrapped in cloth. Do not use sharp objects to avoid piercing the channel.
| System type | Frequency of complete defrosting | Care features | Thawing time |
|---|---|---|---|
| LowFrost | 1-2 times a year | Ice on the walls is thin | 4-6 hours |
| NoFrost | once a year (for hygiene) | Ice only inside the case | 3-5 hours |
| DuoFrost | 1-2 times a year | Combined care | 5-8 hours |
| SmartFrost | As ice forms | Reduced ice formation | 3-4 hours |
Why can’t you use a knife to chip ice?
Using sharp objects to remove ice may puncture the evaporator. Refrigerant circulates in the system, and if the circuit is damaged, it will escape. Restoring the tightness and refilling with freon is a complex and expensive repair, which does not always guarantee a long service life of the refrigerator after such intervention.
Removing residual moisture and cleaning the drainage
When the main body of ice has melted, it is necessary to carefully remove all the water. Use a soft rag or sponge to remove moisture from the bottom of the chambers and from the shelves. Pay special attention to the corners and joints of plastic panels where water can stagnate.
The drainage hole, usually located on the back wall of the refrigerator compartment, needs to be washed. To do this, you can use a small syringe with warm water or a special brush that comes with some models. Clean drainage guarantees that there will be no puddles under the refrigerator in the future. Liebherr. Clean drainage guarantees that there will be no puddles under the refrigerator in the future.
After removing the water, wipe all surfaces dry. A humid environment is favorable for the development of microorganisms, so dryness is a key factor in hygiene. If you used detergents, make sure that they are completely rinsed off, as chemical residues may end up on the food.
⚠️ Attention: Do not pour water directly into the drainage hole under strong pressure. This may cause the collection tray above the compressor to overflow and leak onto the floor.
Washing interior and exterior surfaces
To wash interior chambers, use warm water with baking soda or a mild soap solution. Abrasive powders and chlorine-containing products can damage the coating of walls and plastic elements. Wash every inch of surface thoroughly, including ceilings chambers.
External surfaces, especially if it is stainless steel SmartSteelrequire a special approach. Wipe them along the metal fibers with a special microfiber cloth. To remove fingerprints, you can use special sprays for stainless steel or a weak solution of vinegar.
Don't forget about the door handles and the plinth panel. It is these elements that most often come into contact with hands and become contaminated. After wet cleaning, be sure to go over with a dry cloth to avoid streaks and corrosion.
☑️ Cleanliness checklist
Starting the refrigerator after defrosting
After completing all washing procedures and drying, assemble the refrigerator. Replace dry shelves, drawers and trays. Make sure that all fasteners snap into place correctly and that the elements are level.
Now you can connect the device to the network. Set the temperature control to the working position (usually +4°C for the refrigerator and -18°C for the freezer). If you have a model with a display, wait until the startup diagnostics are completed.
Do not download products immediately. Let the refrigerator run idle for at least 2-3 hours so that it reaches the required temperature and stabilizes the compressor. Only after this can you return the products to the shelves.
How long should you wait before turning it on after transportation?
If the refrigerator has been transported or strongly tilted, before the first After turning it on after defrosting (or purchasing), you must wait 4 to 8 hours. This is necessary so that the compressor oil flows back into the compressor crankcase. Switching on ahead of time can lead to water hammer and damage to the unit.
Is it possible to defrost a refrigerator on the balcony in winter?
It is strictly not recommended to take a working or just defrosted refrigerator out into the cold. Sudden temperature changes and exposure to low temperatures on plastic and seals can cause them to crack. In addition, the oil in the compressor thickens in the cold, which is dangerous during subsequent startup.
What to do if a whistle appears after defrosting?
A slight whistle or hissing in the first hours after defrosting may be due to residual moisture in the system or the peculiarities of the refrigerant circulation. If the sound does not stop during the day and is accompanied by a violation of the cooling capacity, you should contact a service center Liebherr.