Purchasing premium refrigeration equipment is always an event that marks a transition to a new level of comfort and food safety. The German engineering school, represented by the brand Liebherrdictates its own strict operating rules, ignoring which can negate all the advantages of advanced cooling technologies. The correct first start-up of the device is a critical stage on which the longevity of the compressor and the efficiency of the system directly depend NoFrost or SmartFrost.
Many owners make the mistake of believing that it is enough to simply plug the device into an outlet and fill its shelves. In reality, the process requires careful preparation, alignment of the housing and compliance with temporary intervals to stabilize the refrigerant. Only by observing all the nuances, you guarantee that Liebherr will last for decades without the need for expensive repairs.
In this article we will analyze in detail each step, from unpacking to loading the first products. We will pay special attention to setting up electronic control systems, which may seem complicated to an untrained user, but in fact provide incredible temperature accuracy.
Initial inspection and preparation for installation
Before thinking about connecting to the electrical network, it is necessary to conduct a thorough visual and physical inspection of the delivered equipment. Transporting a refrigerator is always a risk of mechanical damage, so first of all, inspect the case for dents, scratches or chipped enamel. Pay special attention to the doors and seals, since even a microscopic defect in the rubber can break the seal of the chamber.
The next step is to remove all transport packaging. It is important to remove not only the outer cardboard, but also any internal fasteners, tape, or foam pads that may be located inside the chambers. Often, users forget to remove plastic bags from under the drawers or remove the protective film from the metal shelves, which can lead to the appearance of a foreign smell when turned on for the first time.
⚠️ Attention: If the refrigerator was delivered in a horizontal position or at a temperature below +5°C, it should absolutely not be turned on immediately. It is necessary to keep the device in an upright position in a warm room for at least 4-6 hours (or better yet, a day) for the oil to drain into the compressor and acclimatize the electronics.
The inside of the refrigerator and freezer compartments should be wet cleaned using a weak soda solution or a special product for household appliances. This will remove technical dust and factory lubricant residues. After wiping, the doors must be left open for 2-3 hours to completely dry and ventilate any foreign plastic odors.
Choosing a location and leveling the housing
The efficiency of the compressor and cooling system directly depends on the quality of ventilation. Liebherr requires maintaining certain clearances between the housing appliance and walls of furniture or premises. It is usually recommended to leave at least 5-7 cm at the back and sides, as well as at least 10 cm at the top for free air circulation.
A critical point is to install the refrigerator on a flat, horizontal surface. Misalignment of the housing can lead to a loose door seal, which will cause constant operation of the compressor and the formation of ice. To adjust, use the front support screws, rotating them with a wrench or manually until the ideal position is achieved.
You can check the horizontal position using a building level placed on the top cover or shelf. If the level shows deviation, adjust the height of the legs. Remember that the door should close by itself when opened at an angle of about 30-45 degrees due to the magnetic seal and the correct angle of the body.
Do not install the refrigerator near heat sources such as radiators, stoves or in direct sunlight. This will create an additional load on the cooling system, forcing compressor to work at the limit, which will reduce its resource and increase energy consumption.
Connecting to the electrical network and initial startup
After the device has stood and taken its place, you can move on to electric connection. Refrigerators Liebherr are sensitive to voltage surges, so it is strongly recommended to use a separate grounded outlet. The use of extension cords or tees is undesirable, as they can cause poor contact and overheating.
When turned on for the first time, the control panel may not light up immediately, but after a few seconds - this is a normal reaction of the electronics to power supply. Modern models are equipped with a protection system that will prevent the compressor from starting instantly, waiting for the pressure in the system to stabilize.
☑️ Initial start-up
At the moment of startup, you can hear a characteristic hum or gurgle - this is the refrigerant starting to circulate through the evaporator tubes. Do not be alarmed if during the first hours of operation the side walls of the refrigerator become noticeably warm; This is how the heat dissipation system works, especially in models with technology VarioSpace or increased freezer volume.
If your model has a display, alarm indicators or flashing temperature symbols may appear on it. This means that it is still warm inside the chambers, and the system has not yet reached the set parameters. Typically, the process of primary cooling of empty chambers takes from 4 to 8 hours, depending on the volume and ambient temperature in the room.
Setting temperature modes and functions
Modern refrigerators Liebherr offer a wide range of settings that allow you to optimize the storage of various types of products. The base temperature in the refrigerator compartment should be +4°C, and in the freezer -18°C. Changing these values is possible through the touch panel or mechanical controls, depending on the device series.
To quickly freeze a large volume of food, use the function SuperFrost. It switches the compressor to maximum performance mode. However, you should not keep this function turned on constantly, as this leads to excessive energy consumption and excessive cooling of already frozen products.
| Function / Mode | Description | Recommended time of use |
|---|---|---|
| EcoMode | Economic mode work | Continuously, with standard loading |
| SuperFrost | Accelerated freezing | 24 hours before and after loading fresh products |
| SmartFrost | Ice reduction technology | Continuously (automatically) |
| HolidayMode | Vacation mode | In case of long-term absence of owners |
Zone deserves special attention BioFresh (or a similar zero zone in other lines). The temperature is maintained here at around 0°C and high humidity, which is ideal for storing meat, fish, vegetables and fruits. This zone is set up separately, and it is important not to overload the drawers so that air can circulate freely around the products.
What is SmartFrost and how does it work?
SmartFrost technology involves a special evaporator design with smooth walls and a special cold air supply system. This reduces the formation of ice in the freezer, making the defrosting process less frequent and easier. Ice does not form a thick layer on the food, and the walls themselves can be easily cleaned with a damp sponge.
First loading with food and operation
You can load the refrigerator with food only after it has reached the specified temperature. The indicators on the control panel will stop blinking and remain steady, indicating readiness. Suddenly loading warm food into an empty, cold refrigerator will place enormous stress on the compressor.
Distribute food evenly across shelves without blocking the vents. Cold air should freely wash every corner of the chamber. It is better to immediately place meat and fish in the BioFresh zone or lower shelves, where the temperature is lower, and place dairy products and ready meals higher.
Do not place hot or warm food inside the chamber. This will not only disrupt the temperature balance, but will also lead to moisture condensation and the possible growth of bacteria on neighboring products. Allow the food to cool to room temperature before storing.
⚠️ Attention: Do not fill the refrigerator with food more than 2/3 of the total volume on the first day of operation. A sharp change in the heat capacity of the internal space can disrupt the calibration of temperature sensors.
Typical sounds and operating features
During operation, you may encounter various sounds that at first seem unusual. Modern refrigerants and compressors operate differently than techniques from previous decades. For example, a quiet hissing or gurgling sound is the normal sound of freon moving through the capillary tubes.
A periodic click may indicate the operation of the thermostat or an automatic defrosting system that dumps ice from the evaporator into a special tray. There is also a characteristic sound of expansion and contraction of the plastic parts of the case as the temperature inside the chambers changes.
Fans in NoFrost systems also emit a monotonous hum, which can intensify when the door is opened or during intense cooling. If the sound becomes sharp, metallic, or is accompanied by a burning smell, this is a reason to immediately contact a service center.
Service and care after startup
The right start is just the beginning. In order Liebherr to please you with long service, you need to regularly care for the device. Once every six months, it is recommended to check the condition of the rubber seals, clean them of dirt and treat them with silicone grease to maintain elasticity.
The rear condenser grille should be periodically cleaned of dust using a vacuum cleaner or soft brush. A grate clogged with dust impairs heat transfer, causing the compressor to work longer and consume more electricity. This is a simple procedure that significantly extends the life of the unit.
Do not forget to keep the drainage hole in the refrigerator compartment clean. If it becomes clogged, water will begin to accumulate at the bottom of the refrigerator or under the vegetable drawers. To clean, use the special brush included in the kit or a soft wire.
How long should the refrigerator operate before loading food?
After being plugged in, the refrigerator takes 2 to 4 hours to stabilize the temperature in the empty chambers. It may take up to 8-12 hours to completely cool down to the specified parameters, especially if the room is hot. It is better to load food after the temperature indicators stop flashing.
Why does the Liebherr refrigerator hum loudly when first started?
The first start is always accompanied by more intensive work of the compressor, since the system needs to cool a large volume of warm air. The sound of refrigerant circulating may also be heard. If the humming is not accompanied by vibration of the case and does not increase over time, this is normal.
Is it necessary to defrost a Liebherr refrigerator with the NoFrost system?
Full defrosting is rarely required, only for general cleaning or in case of a long shutdown. The NoFrost system automatically removes moisture, preventing the formation of an ice crust. However, once a year it is recommended to turn off the device for hygienic cleaning and treatment of seals.
What to do if the red alarm indicator is on?
The red indicator signals that the temperature in the chamber has risen above the permissible norm. This often happens when loading warm food for the first time or when the door is not tightly closed. Check the closure of the chambers, make sure that the food is not blocking the air flow, and wait a few hours. If the indicator does not go off, contact the service.
Is it possible to install a Liebherr refrigerator in an unheated country house?
Most models Liebherr have an extended climate class (SN-T), which allows operation at ambient temperatures from +10°C to +43°C. However, operation at temperatures below +10°C may cause the oil in the compressor to solidify and cause the thermostat to malfunction. There are special series for unheated rooms, but the regular model cannot be used there.