Many owners of household appliances mistakenly believe that the process of starting the unit after long-term storage or transportation is elementary: just plug the cord into the outlet. However, such haste can lead to serious damage, especially if the device was transported in a horizontal position. Refrigeration compressor is the heart of the system, and the oil in it could flow into the evaporator or condenser circuits during rest.
If you ignore the rules acclimatization technicians, you may encounter water hammer or motor failure. In this article, we will look in detail at why it is necessary to pause before turning it on, how to prepare the camera for operation, and what nuances you should pay special attention to in order to extend the life of your Liebherr, Bosch or Indesit.
Following simple but critical rules will avoid costly repairs. Let's look at the process step by step, paying attention to the technical details that are often overlooked during initial operation.
Why you can’t turn on the equipment immediately after delivery
The main reason for waiting lies in the physical properties refrigerant and compressor oil. During transportation, especially if the unit was lying on its side, oil from the compressor crankcase could partially flow into the pipeline system. If you start the engine immediately, oil will get into the valves, which will cause water hammer, or the compressor will start to run “dry,” which will lead to its rapid wear.
In addition, with a sharp temperature change, for example, if the refrigerator is brought from the cold into a warm room, condensation will form inside. Moisture on the electrical contacts can cause a short circuit. The minimum waiting time for a refrigerator transported vertically is 2-3 hours, and for a refrigerator lying on its side - from 8 to 24 hours.
It is also important to consider that the door seals could “remember” the compressed position after a long period of inactivity. They need time to expand and ensure the tightness of the chamber even before the compressor begins active operation.
⚠️ Attention: If you transported the refrigerator at a temperature below +5°C, it is strictly forbidden to turn it on earlier than 4-5 hours after bringing it into the room, even if it was standing upright. The condensate should completely evaporate.
Preparing for the first start: step-by-step algorithm
Before pressing the power button, it is necessary to conduct a visual inspection and prepare the internal space. Remove all shipping tape, cardboard spacers, and most importantly, remove any protective film from the interior shelves and drawers, if any. The film prevents normal air circulation.
Wet clean the internal chambers. Use a weak soda solution or a special household appliance cleaner. Do not use harsh chemicals or abrasives that may damage the plastic coating. After washing, be sure to wipe the surfaces dry with a clean rag.
☑️ Preparing the refrigerator for startup
Pay special attention to the ventilation system. Make sure the condenser's rear grille (usually the black one on the back) is free of dust or dirt that has accumulated during storage. A clean heat exchanger ensures effective heat removal.
Table of holding time before switching on
The time required to stabilize the system directly depends on the transportation conditions. Below are indicative data that will help you determine the duration of the pause.
| Conditions of transportation | Environment temperature | Recommended waiting time | Risk in case of violation |
|---|---|---|---|
| Vertical position | Warm room | 2–3 hours | Minimum |
| Horizontal position | Warm room | 8–12 hours | High (oil in the system) |
| Any position | Brought in from frost (-10°C and below) | 4–6 hours (minimum) | Condensation, short short circuit |
| Long warehouse downtime | Unheated room | 24 hours | Grease thickening |
What to do if the refrigerator was turned on immediately?
If you accidentally turned on the unit ahead of time, immediately turn it off from the network. Allow the equipment to stand switched off for a few more hours to allow the oil to drain back into the compressor crankcase. Restarting is possible only after the recommended waiting time has expired. connection is safer.
First switching on and setting the temperature mode
After the acclimatization time has been met, you can connect the device to the mains. Make sure the outlet is grounded and meets the power requirements (usually at least 2 kW). Do not use an extension cord or tee unless absolutely necessary - a direct connection is safer.
In the first minutes of operation, listen to the sounds. Refrigerator. unit it may make gurgling sounds - this is normal, the refrigerant begins to circulate through the system, however, a loud knock, grinding or humming that lasts more than a minute should alert you.
Set the temperature mode. For initial startup, it is recommended to set average values, for example, +4°C for the refrigerator compartment and -18°C for the freezer. Do not load food into an empty refrigerator immediately. Let it run idle for 2-3 hours to reach the required temperature.
Features of starting refrigerators with the No Frost system
Technology No Frost implies the presence of fans and additional heaters for defrosting. When first turned on, such models can operate longer in cooling mode to freeze the drainage system and evaporator.
It is important to check whether the air ducts inside the chamber are blocked. systems No Frost is critical. If you cover the outlets with food, the temperature sensors will show incorrect data and the compressor will operate continuously.
- 🌬️ Make sure that there is a gap between the back wall and the food for air to pass through.
- ❄️ Check that the cold air supply dampers open freely (if they are visible).
- 🔌 Make sure that the power cord is not pinched and does not get hot at the connection point.
Modern models with electronic control may require setting the time and date, as well as activating energy saving functions. Read the instructions for your specific model Samsung or LG, since interfaces may differ.
⚠️ Attention: In some models with electronic control, after the first turn on, the “Door Open” or “No Cold” alarm may sound. This is normal if the refrigerator has not yet cooled down. Wait 1-2 hours, the alarm should turn off automatically.
Typical errors in operation after idle time
One of the common mistakes is ignoring the installation level. If the floor is uneven, the refrigerator may stand skewed. This leads to improper closing of the doors and, as a result, freezing of the “fur coat” and increased load on the motor. Use a building level to check.
Another mistake is installing the unit close to the wall For efficient operation. the heat exchanger requires an air flow. The minimum distance to the rear wall should be 5-7 cm, and at least 5 cm on the sides. Failure to comply with these standards will lead to overheating of the compressor.
You should also not forget about the cleanliness of the capacitor. If the refrigerator has been standing in the garage or on the balcony for a long time, dust or cobwebs may have settled on the back grille. Clean it with a soft brush before turning it on.
Checking the operation of the system
5-6 hours after switching on, carry out diagnostics. The refrigerator compartment should become noticeably cooler, and the freezer compartment should become frosty. Check the door seals: they should fit snugly around the entire perimeter. To check, you can clamp a sheet of paper with the door - it should be removed with force.
Pay attention to vibration. Light vibration of the case is acceptable, but if the refrigerator “walks” on the floor or makes rattling sounds, check that the shipping bolts have been removed (if your model had them) and that the support legs have been adjusted.
If all parameters are normal, you can gradually load the products. Start with small portions, giving the equipment time to adapt to the heat load.
Frequently asked questions (FAQ)
Is it possible to turn on the refrigerator if it has been in the cold?
You can turn it on only after it has been in a warm room for at least 4-5 hours. This is necessary to evaporate condensate inside the electrical circuit and warm up the oil in the compressor. Turning on a wet appliance is dangerous.
How long does it take the refrigerator to reach temperature for the first time?
Usually the primary cooling process takes from 2 to 6 hours, depending on the volume of the chambers and the energy efficiency class. Complete temperature stabilization at all points may take up to 24 hours.
Why does the refrigerator hum after turning it on?
A new or long-standing refrigerator may hum louder than usual in the first hours of operation, as the compressor works at full power to raise the temperature. If the humming is not accompanied by knocking and goes away after a few hours, this is normal.
Is it necessary to defrost the refrigerator before turning it on for the first time?
If the refrigerator is new, no. If it was used and stood for a long time with the door closed, mold or an unpleasant odor may have formed inside. In this case, a thorough washing with soda and ventilation is required, but not defrosting in the classical sense.
What to do if the refrigerator does not freeze after 10 hours of operation?
Check whether the door is tightly closed, whether the ventilation holes are blocked and whether the thermostat is installed correctly. If after 12 hours there is no cold, and the compressor is running constantly, there may be a freon leak during transportation, you need to call a technician.