Refrigerators Liebherr series CBNoESF 4835 equipped with an advanced system NoFrostwhich theoretically eliminates the formation of ice on the walls of the chambers. However, owners often wonder about the need for scheduled defrosting. Despite the automatic moisture removal system, complete shutdown of the device is required to carry out high-quality sanitization, eliminate foreign odors and service hidden components that cannot be reached when the compressor is running.
The process of preparing for defrosting of this model has its own technical nuances related to the design of the evaporator and the location of the drainage system. Ignoring shutdown instructions may result in damage to sensitive electronics or damage to plastic interior components. In this article, we will analyze in detail the algorithm of actions that will allow you to safely service your refrigeration center.
It is important to understand that even in systems with automatic defrosting, ice chips can accumulate over time in hidden cavities behind the rear panel. Regular, at least once a year, complete defrosting helps extend the life of the heat exchanger and maintain the energy efficiency of the device at the factory level.
Preparation for shutdown and defrosting
The first step before starting any manipulations with an electrical appliance is to ensure safety. You need to disconnect the refrigerator Liebherr CBNoESF 4835 from the electrical network. To do this, use the socket to which the device is connected, or, if you have access to the switchboard, the corresponding machine. Pulling the plug with wet hands is strictly prohibited.
After de-energizing, empty both chambers of food. It is best to transfer the products to thermal bags or other cold places to avoid spoilage during the procedure. Shelves and drawers should also be removed for separate washing.
⚠️ Attention: Do not try to speed up the defrosting process by placing containers of boiling water inside the chambers or using a hairdryer. A sudden change in temperature can cause deformation of the plastic housing and damage to the refrigerant pipes.
Pay special attention to the door seal area. The model CBNoESF 4835 uses a magnetic seal of complex shape, in the folds of which condensation and dirt often accumulate. Before starting the main defrosting, wipe the seal with a dry soft cloth.
Natural thawing and moisture removal
The system NoFrost implies that the bulk of the ice is formed on the hidden evaporator, and not on the walls of the chamber. Therefore, the natural defrosting process may take longer than with older models with a drip system. Leave the refrigerator and freezer doors completely open.
Prepare several large towels or absorbent rags to catch melting water. Unlike models with a drip, water can flow not only into the drainage hole, but also accumulate at the bottom of drawers and niches. Check the lower levels of the chambers regularly. Liebherr water can flow not only into the drainage hole, but also accumulate at the bottom of drawers and niches. Check the lower levels of the chambers regularly.
If you notice that water accumulates too quickly or flows outside the chambers, immediately add additional absorbent materials. Moisture should not get on the floor, especially if you have wood or laminate flooring, as this can cause the material to swell.
- 🧊 Leave the doors open for at least 12-24 hours to completely evaporate moisture from the internal cavities.
- 🧽 Use a soft sponge to remove any remaining ice from plastic elements without using sharp objects.
- 💧 Wash the drainage channel in the refrigerator compartment with warm water using a special brush.
- 🌬️ Provide good ventilation in the room where the refrigerator is located to speed up drying.
Why you can’t use a chopping knife ice?
The use of sharp metal objects to remove ice from Liebherr refrigerators is strictly prohibited. The evaporator tubes in the NoFrost system are located very close to the inner wall of the chamber. One careless movement can lead to a puncture, refrigerant leak and expensive repairs, which are often not economically feasible.
Cleaning the ventilation and drainage system
The key element of the model CBNoESF 4835 is the air circulation system. There are ventilation holes in the back wall of the refrigerator compartment through which cold air is supplied into the chamber. Over time, dust and small food particles can accumulate in these channels.
To clean, use a soft brush with long bristles or a vacuum cleaner with a narrow attachment. Carefully walk along the ventilation grilles, removing visible dirt. This will restore proper air circulation and reduce the load on the fan.
⚠️ Attention: The drainage hole in the refrigerator compartment may become clogged with fatty deposits. If the water remains at the bottom after defrosting, carefully clean the hole with a special flexible wire or a brush included in the delivery package.
The freezer area requires special attention. There are also channels for removing condensate formed during automatic defrosting cycles of the evaporator. Make sure there is no ice blocking the drain on the floor of the freezer under the bottom drawer.
Washing internal surfaces and accessories
After the ice has completely melted, you can begin wet cleaning. For the inner walls of the chambers Liebherr it is best to use warm water with the addition of a mild detergent or baking soda solution. Aggressive chemistry, abrasive powders and solvents are prohibitedas they can damage the antibacterial coating.
Glass shelves and plastic drawers VarioBox i EasyFresh are best washed separately in the sink under running water. This will allow you to thoroughly clean the corners and joints where dirt often remains. Rinse all elements thoroughly and allow them to dry completely before putting them back.
Be sure to wipe the outside of the doors using a special cleaner for stainless steel, if your model has such a coating. Movements should be along the metal fibers to avoid streaks and micro-scratches.
| Element | Cleaning agent | Tool | Frequency |
|---|---|---|---|
| Internal walls | Soda solution or soft SMS | Soft sponge | When defrosting |
| Seals | Warm water | Lint-free cloth | Monthly |
| Shelves and drawers | Dishwashing liquid | Sponge/Brush | When defrosting |
| Outer housing | Special product for steel | Microfiber | As it gets dirty |
Drying and assembly refrigerator
The final stage before turning it on is thorough drying. Moisture inside the chambers is an environment for the development of mold and unpleasant odors. Wipe all surfaces dry with a clean cotton cloth.
Pay special attention to drawer niches and shelf mountings. Make sure there are no drops of water left in the recesses of the plastic. Only after all elements have completely dried can you begin assembly.
Install the shelves and drawers in their places according to the markings. Make sure that the drawers EasyFresh are tightly and airtight, as their ability to maintain the optimal level of humidity for vegetables and fruits depends on this.
☑️ Ready to turn on
First launch and setting up modes
After assembly, the refrigerator can be connected to the network. However, don't rush to load the products. Let the device run idle for 2-4 hours so that it reaches operating temperature and stabilizes the compressor operating modes.
The model CBNoESF 4835 is equipped with electronic control. Check the temperature settings. For the refrigerator compartment, the optimal value is +4°C or +5°C, for the freezer - -18°C. If necessary, adjust the settings through the control panel.
If the alarm indicator or high temperature signal lights up on the display, do not be alarmed. After defrosting and loading warm food, this is a normal system reaction. The alarm will turn off automatically when the temperature inside the chambers reaches the set values.
⚠️ Attention: Specifications and control panel interface may vary slightly depending on the year of manufacture and regional firmware version. Always check the instructions that came with your specific appliance.
During the first hours of operation, the refrigerator may make louder noises than usual. This is due to the circulation of the refrigerant and the operation of the system fans NoFrost in a new cycle. After a few hours, the operation of the device will become quiet and unnoticeable.
Frequently asked questions (FAQ)
Is it necessary to defrost a Liebherr with the NoFrost system?
Yes, it is necessary to defrost, but not to remove ice from the walls, but for hygienic cleaning, disinfection and cleaning the drainage system. It is recommended to do this 1-2 times a year.
How long does it take to defrost the CBNoESF 4835 model?
The full cycle of natural thawing and drying takes from 12 to 24 hours. Using a hairdryer or boiling water is prohibited, as this can damage the plastic and evaporator tubes.
What to do if a smell appears after defrosting?
It is necessary to re-rinse all surfaces with a solution of soda or vinegar, paying special attention to the drainage hole. Often the smell is caused by bacteria accumulated in the drain channel.
Can the shelves be washed in the dishwasher?
Glass shelves and some plastic elements (if specified in the instructions) can be washed. However, it is better to wash the elements of the system EasyFresh and metal baskets by hand so as not to damage the coatings and seals.