Buying a new refrigerator is always a joyful event, marking an update to kitchen appliances and improved food storage conditions. However, having brought the bulky unit home, many owners make the same mistake: they rush to immediately plug the cord into the rosette, wanting to cool drinks or organize supplies as quickly as possible.
Such a rush can be very expensive, since oil in the compressor after shaking during transportation, it is not in its place. If you start the engine immediately, it will operate in dry friction mode, which will inevitably lead to rapid wear of the piston group or even jamming.
The time that needs to be waited directly depends on the position in which the transportation was carried out and what the temperature was outside. In this article, we will analyze in detail the physical processes occurring inside the cooling system and determine the exact time intervals for the safe start-up of your new equipment.
Why you can’t turn on the refrigerator right away: the physics of the process
The main reason for the ban on instantaneous switching on lies in the design compressorwhich is the heart of the entire refrigeration system. Inside this unit there is a special compressor oil that lubricates the rubbing parts and ensures the tightness of the gaps between the piston and the cylinder.
During horizontal transportation, which is often necessary for bringing equipment into an elevator or doorway, this oil flows out of the compressor crankcase and enters the refrigerant circulation circuit, filling the evaporator and condenser tubes. If voltage is applied to the engine at this moment, it will try to compress gaseous freon along with liquid oil.
Liquid, unlike gas, is not compressed, which creates critical pressure that can destroy valves or break the connecting rod. In addition, working without an oil film causes overheating and metal scuffing. That is why gravity rest is a prerequisite: the oil must slowly drain back into the compressor crankcase under the influence of gravity.
⚠️ Attention: Ignoring the settling time can lead to water hammer in the system, after which repair of the compressor often becomes economically unfeasible, requiring replacement of everything unit.
It is also worth considering that with a sharp temperature change, for example, if the refrigerator is brought from the cold into a warm room, condensation forms on the internal electronic components and contacts. Turning on a wet device is fraught with a short circuit and failure of the control board.
What happens inside when starting without sediment?
When starting without sediment, the oil in the tubes does not have time to return to the crankcase. The compressor begins to work with increased load, trying to push the liquid. This causes strong noise, vibration and a sharp jump in current consumption, which can blow out automatic fuses in the electrical network.
Factors influencing the downtime of equipment
There is no single figure that is suitable for absolutely all cases. The time after which you can turn on the refrigerator varies depending on several key parameters that must be taken into account to maintain the warranty and functionality of the device.
The first and most important factor is the transportation position. If the unit was transported vertically, as required by the rules, then the oil remained in the crankcase and the waiting time was minimal. However, when tilted more than 40 degrees or completely laid on its side, the process of draining the lubricant takes much longer.
The second factor is seasonality and ambient temperature. In winter, especially in severe frosts, the viscosity of compressor oil increases. Cold, thick liquid drains more slowly than warm liquid, so winter installation requires a longer pause before the first start.
The third aspect is the type of refrigerant and the design of the compressor itself. Modern inverter models may be more sensitive to the presence of liquid in the system than older linear counterparts. Also, the volume of the system affects the time: in large two-compressor models, the oil path is longer.
How long should the refrigerator stand after horizontal transportation
Transportation in a lying position is the most risky scenario, requiring maximum patience from the owner. In this case, the oil is guaranteed to leave the reservoir allocated for it and is distributed through the pipeline system.
The minimum settling time in this case is 4 hours, but this is only the absolute minimum for the summer period and small-volume models. Experienced refrigeration equipment repair technicians recommend increasing this period to 8–12 hours to be completely sure that the lubricant will return to the crankcase.
If possible, it is better to leave the refrigerator for a day. This will not only allow the oil to completely return to its place, but will also allow the temperature of all internal components to equalize to room temperature, which is especially important for plastic elements and electronic sensors.
☑️ Check after horizontal transportation
Do not try to speed up the process by tilting or shaking the body. Such actions can, on the contrary, drive the oil deeper into hard-to-reach areas of the capillary tube, from where it will drain for a very long time.
Features of turning on the refrigerator in winter
Winter installation of the refrigerator is associated with additional risks associated not only with oil, but also with the physical properties of materials. If the equipment was delivered in frosty weather, even a short stay on the street or in an unheated truck affects its condition.
The main problem in winter is condensation. When a cold object is brought into a warm room, moisture instantly appears from the air on its surface and inside the components. If you turn on the device immediately, water may get on the wiring contacts or control board, causing corrosion or a short circuit.
In addition, as already mentioned, compressor oil it thickens in the cold. It takes longer for it to become fluid enough to return to the crankcase normally. A sudden start of thick oil can cause the compressor to work “pull”, consuming increased current.
⚠️ Attention: Do not place a refrigerator just brought from the cold near heating radiators or heat guns. Sudden heating can deform plastic parts and damage seals.
The recommended acclimatization time for the winter period is at least 4-5 hours, even if transported in an upright position. This time is necessary for the body to fully warm up and condensation to evaporate.
Comparison of waiting times for different conditions
For ease of perception of information, we systematize the data on settling time depending on transportation conditions and season. These data are the average recommendations of manufacturers of household appliances.
| Transportation conditions | Season | Minimum laying time | Recommended time |
|---|---|---|---|
| Vertical (angle < 40°) | Summer | 30 minutes | 2 hours |
| Vertical (angle < 40°) | Winter | 2 hours | 4-5 hours |
| Horizontal (lying down) | Summer | 4 hours | 8 hours |
| Horizontal (lying) | Winter | 6 hours | 12-24 hours |
The table shows that the most critical is the combination of the winter period and horizontal transportation. In this case, haste is unacceptable. It’s better to spend the night without a refrigerator than to risk expensive repairs.
It is worth noting that modern models with inverter compressors may have their own features specified in the instructions. However, the rule “the longer it sits, the better” remains universal for all types of equipment.
Correct algorithm for the first start
After the required time has passed, you should not immediately load the refrigerator with food. The first start-up must be idle so that the system reaches operating mode and stabilizes the temperature.
First, clear the internal space of all shipping materials: remove the tape, take out the foam, remove the protective films from the shelves and drawers. Then wipe the interior surfaces with a damp cloth and mild detergent to remove factory dust and odors.
Plug in the refrigerator. Make sure the outlet is grounded and meets wattage requirements. After switching on (the compressor) will start working. In the first minutes, it may work louder than usual - this is normal, since the system is filled with refrigerant.
Check the operation of the thermostat and the presence of cold. If within 30–40 minutes the walls of the chamber do not begin to cool, and the compressor operates continuously, there may be a freon leak or breakdown, and the device requires service.
Common mistakes when installing new equipment
Even knowing the rules, consumers often make mistakes that shorten the life of the refrigerator. One of the most common is installation close to the wall or in a niche without gaps.
The refrigerator needs space for air circulation around the condenser (usually the rear grille or side walls). If the heat exchange is disrupted, the compressor will work without interruption, trying to gain temperature, which will lead to its overheating and breakdown.
Another mistake is installation on an uneven floor. If the refrigerator wobbles, the vibration from the compressor increases, being transmitted to the floor and furniture. In addition, a skewed case can break the tightness of the door seals, which will allow warm air to enter the chamber.
⚠️ Attention: It is strictly forbidden to adjust the position of the refrigerator by placing scraps of linoleum or cardboard under the legs. Use only standard screw supports.
It is also not recommended to turn on the refrigerator through an extension cord or tee, especially if the wiring in the house is old. Direct connection to the outlet is the safest option.
Is it possible to transport a refrigerator in the trunk of a passenger car?
Technically, it is possible if you completely deflate the wheels (lower the ground clearance) or place the refrigerator diagonally. However, the risk of damage to the housing or tubes during such transportation is extremely high. It is better to use the services of movers with Gazelle.
What to do if the refrigerator was turned on immediately?
If it so happens that you or the delivery people turned on the refrigerator immediately after installation, do not panic, but be careful. If the unit operates normally, does not make strange sounds, and is cold, you may be lucky and no oil has gotten into critical areas.
However, if you hear gurgling, humming, or knocking noises, immediately unplug the unit. Let it stand in the off state for several hours so that the oil drains, and then try to turn it on again.
In the worst case, if the compressor hums, but does not start or knocks out the plugs, it means that a water hammer or jamming has occurred. In this situation, independent repair is impossible; you need to call a technician to diagnose and possibly replace the compressor.
Is it possible to turn on the refrigerator 1 hour after delivery?
Turning on after 1 hour is only permissible in ideal conditions: if the refrigerator was transported strictly vertically, without tilting more than 20 degrees, and it was warm outside. In winter or after recumbent transportation, 1 hour is absolutely not enough.
Do you need to remove the shelves before transportation?
Yes, it is better to remove all removable shelves, drawers and trays and transport them separately. This will prevent them from breaking due to shaking and reduce the weight of the structure, reducing the risk of damage to the internal bulkheads of the chamber.
Why does the refrigerator hum loudly after the first start-up?
The first start-up is always accompanied by noisier operation, since the system is filled with refrigerant under pressure. If after 30-40 minutes the noise does not subside or a metallic clanging sound appears, this is a sign of a malfunction.
Is condensation inside the refrigerator dangerous?
Condensation is only dangerous when it is turned on. Water on electrical contacts can cause a short circuit. After the device has warmed up and worked, the moisture evaporates and no longer poses a threat.
Do I need to wash a new refrigerator before use?
Absolutely. Factory dust and the smell of plastic and packaging may remain inside a new refrigerator. Wiping with a weak solution of soda or vinegar will remove extraneous odors and make food storage hygienic.