Purchasing high-quality refrigeration equipment is only half the success, because correct installation determines the service life of the equipment and the quality of cooling of products. German units Liebherr are famous for their reliability, but they require strict adherence to installation rules so that the compressor operates silently and the system NoFrost functions efficiently. Errors during the initial startup can lead to breakdowns that will not be considered a warranty case.
Before you begin active operations, you need to make sure that you fully understand the sequence of operations. In this article we will analyze all the nuances, from unpacking to the first setting of temperature conditions. A competent approach will avoid common problems such as increased noise or incorrect defrosting.
Therefore connection should be carried out in accordance with the manufacturer's technical requirements. You should not ignore even seemingly small details, as they directly affect the durability of the unit.
Transportation and preparation of the installation site
The first step is always delivery of the equipment to its destination. Refrigerators Liebherr often have impressive weight and dimensions, so they should only be moved in a vertical position. If the inclination is more than 40 degrees, oil from the compressor may enter the refrigerant circuit, which will lead to blockage of the capillary tube and serious damage.
If transportation in a vertical position was not possible, the unit must stand for at least 4-6 hours before turning on. This time is necessary for the oil to flow back into the compressor crankcase. Ignoring this rule is one of the most common causes of failure refrigeration circuit.
When choosing a location for installation, make sure that there is free space around the device for air circulation. The back wall and side panels should not fit tightly against the furniture. The minimum gap at the back should be about 5-7 cm, and at least 2 cm at the sides.
⚠️ Attention: Installing the refrigerator in a niche without maintaining ventilation gaps will lead to overheating of the compressor and increased energy consumption.
It is also important that the floor at the installation site is level and durable. An uneven surface will cause the cabinet to vibrate, causing constant noise and possibly damaging the internal shelves. To check, use a building level.
Removing shipping elements and unpacking
After the refrigerator is delivered to the installation site, it is necessary to remove all packaging materials. The interior space, shelves and drawers are often secured with tape or foam inserts. All these elements need to be removed. Pay special attention to the compressor: it may be secured with transport bolts or brackets, which must be removed before the first start.
There may be bags of silica gel or instructions inside the chamber. Check all shelves and door pockets. If you find that some parts (for example, an egg tray or a bottle holder) are packaged separately, they should be installed in their original places according to the diagram in the user manual.
- 📦 Remove the outer cardboard and protective film from the case.
- 🔩 Unscrew the shipping bolts on the compressor (if any).
- 🧊 Remove all packaging material from inside the cameras.
- 📄 Find the warranty card and instructions.
Do not rush to throw away the packaging immediately after installation. Save the boxes and foam in case you need to transport the refrigerator to another location or send it to a service center. Having the original packaging often simplifies the warranty service procedure.
Aligning the case level
One of the critical tasks is the correct adjustment of the support legs. The body should stand strictly horizontally, but with a slight tilt back. This is necessary so that the doors close independently under the influence of gravity if they are released in the half-open position.
Use the front support screws for adjustment. By rotating them clockwise, you raise the angle, counterclockwise, you lower it. The rear wheels are usually not adjustable or have a fixed height. After installation, check the position with a bubble level, applying it to the top panel lengthwise and crosswise.
| Parameter | Standard value | Consequences of violation |
|---|---|---|
| Tilt back | 1-2 degrees | The door does not close on its own |
| Gap at the back | 5-7 cm | Condenser overheating |
| Gap at the side | 2-3 cm | Difficulty opening |
| Support on the floor | All 4 legs | Vibration and noise |
If the refrigerator is crooked, the door may warp, which will lead to a loose fit seal. As a result, warm air will enter the chamber, ice will form on the walls, and the compressor will work non-stop, trying to compensate for the heat influx.
☑️ Checking the installation
Connecting to the electrical network
Refrigerators Liebherr require connection to a standard single-phase network with a voltage of 220-240 Volts and frequency 50 Hz. It is extremely important that the socket is in good working order and has reliable contact. The use of extension cords or tees is not recommended, as they can cause contact heating and fire, especially during compressor starting currents.
A prerequisite is the presence of grounding. Modern models are equipped with sophisticated electronics that are sensitive to voltage surges and static electricity. If your wiring does not have grounding, it is recommended to consult with an electrician before connecting expensive equipment.
⚠️ Attention: Do not plug in the refrigerator immediately after defrosting or transporting it in the cold season. Let it warm up to room temperature to avoid short circuits due to condensation.
For additional protection, you can use a surge protector with a voltage stabilization function, although the refrigerators themselves Liebherr often already have built-in protection against power surges within acceptable limits. Make sure that the power cord is not stretched and does not touch hot parts of the unit, such as the condenser grille at the back.
What to do if the outlet is far away?
Use an extension cord only as a last resort. It must be designed for a current of at least 16 Amps and have a wire cross-section of at least 1.5 mm². Twisting of wires is prohibited.
First start-up and setting temperatures
After all the preparatory steps are completed, you can plug the device into the network. The indicators on the control panel will light up. During the first hours of operation, the refrigerator can work in enhanced mode to cool the internal volume to the specified parameters. Do not load the chambers with products right away - let the equipment enter operating mode.
Configuration is carried out through the control panel, which, depending on the model Liebherr can be located outside or inside. The optimal temperature for the refrigerator compartment is +4..+5°C, for the freezer -18°C. The adjustment is made using the “+” and “-” buttons or the rotary switch.
NoFrost system will start working automatically. You may hear sounds of coolant flowing or clicking sounds - this is normal. During the first 24 hours, do not open the doors unless absolutely necessary to stabilize the temperature.
If the model is equipped with a display, check activation additional functions such as SuperFrost or SuperCool. These modes are useful when loading large quantities of warm products, but their prolonged use leads to increased energy consumption.
Typical installation errors
Many users make mistakes that shorten the service life of equipment. One of them is to install the refrigerator near heat sources: radiators, stoves, or in direct sunlight. This forces the compressor to work at its limit.
Another common problem is ignoring product placement instructions. Do not seal the ventilation holes inside the chamber with products. Air circulation must be free, otherwise there will be different temperatures in different areas of the refrigerator, which will lead to food spoilage.
- 🚫 Installation close to the wall without a gap.
- 🚫 Using a faulty or old socket.
- 🚫 Loading warm food into an empty one camera.
- 🚫 Ignoring the tilt of the body back.
It is also worth mentioning the cleanliness of the capacitor. It is recommended to vacuum the radiator grille at the back or bottom of the refrigerator at least once a year. A layer of dust several millimeters thick can reduce the efficiency of heat transfer by 20-30%.
Why does the refrigerator hum loudly after installation?
The hum can be caused by an uneven installation (check the legs), touching the back wall of the cabinet, or pipes in the back. Also, the new compressor may work louder during the break-in period (the first 2-3 days).
Does it need to be washed before using the refrigerator for the first time?
Yes, definitely. Wipe the internal chambers with a soft cloth soaked in a weak soda solution or a special product for household appliances to remove factory dust and the smell of new plastic.
Is it possible to place the refrigerator on a balcony?
Most models Liebherr are designed for use in climate class SN-T (from +10 to +43°C). If the temperature on the balcony in winter drops below +10°C, the oil in the compressor will thicken and the device will fail.
How to understand that the refrigerator has reached normal operation?
Usually this takes from 4 to 12 hours. The temperature indicator will stop flashing and light up steadily. Also, the compressor will start to turn on less often, and the operating cycles will become shorter.
Do you need to defrost a Liebherr refrigerator?
Models with the NoFrost system do not require manual defrosting. However, once a year it is recommended to turn off the device for general cleaning and disinfection of internal surfaces.