Delivery of new household appliances is always a holiday, because a cozy life and fresh products lie ahead. However, when the movers leave and you are already holding the power cord in your hands, a critical question arises: can the unit be turned on immediately? Many people make the mistake of starting the device right away, which can lead to serious damage in the future.
The main reason for the wait lies in the physics of the compressor, which is the heart of the entire cooling system. During transportation, especially if the refrigerator was tilted or shaken, oil from the compressor could flow into the evaporator or condenser circuits. If you start the engine now, it will work without lubrication or will try to compress the incompressible fluid, which is guaranteed to lead to jamming of the piston group.
The time that needs to be waited directly depends on the position in which the equipment was transported and what kind of compressor you have installed. Inverter models and classic linear units require a different approach to stabilizing internal fluids. Let's look at all the nuances so that your purchase will last for many years without expensive repairs.
Physics of the process: why you can’t rush
To understand the need for a pause before the first start, you need to look inside of the refrigeration unit. The compressor that moves the refrigerant through the system is immersed in oil. This oil is necessary to lubricate rubbing parts and remove heat. In normal operation, it is located in the lower part of the engine (crankcase).
When shaking on the way or tilting the housing by more than 40 degrees, oil flows through the pipes of the circulation system. It may end up in the evaporator where it would not normally be. If you turn on the refrigerator immediately, the compressor will start to run dry. This is fraught with overheating and rapid wear of mechanical parts.
⚠️ Attention: An attempt by the compressor to compress the oil that has entered the circuit causes hydraulic shock. This can lead to rupture of valves or damage to the piston group, which is a non-warranty case.
It is also important to consider that the refrigerant (freon), with a sudden change in position, can mix with oil or condense in undesirable places. The settling time is necessary for gravity to do its job: the oil flows back into the compressor, and the refrigerant is evenly distributed throughout the system.
Dependence of time on the position during transportation
The most important factor determining the duration of the “rest” of the equipment is how exactly it moved from the store to your kitchen. Manufacturers of household appliances clearly regulate these parameters in the instructions for models Bosch, Liebherr, Indesit and others.
If the refrigerator was transported strictly vertically, without tilting, then the risk of oil leakage is minimal. In this case, it is enough to allow the system to stabilize after vibration. However, if the unit had to be tilted to be carried into an elevator or turned around in a corridor, the situation changes dramatically.
Let's consider the main scenarios and the recommended holding time:
- 🚛 Vertical transportation: If the refrigerator was standing on legs or wheels all the time, it is enough to wait 2-4 hours. This is enough for the coolant to calm down.
- 📐 Tilt up to 40 degrees: For careful skidding, when the equipment was slightly tilted, but did not lie down completely, a holding time of 4 to 8 hours is recommended.
- 🛌 Transportation lying down: This the riskiest option. If the refrigerator was lying on its side or back, the minimum waiting time is 12 hours, or better yet, a full day.
Do not rush things. It’s better to lose one day than to wait weeks for a repairman. If transported lying down, the oil is guaranteed to flow deep into the evaporator tubes, and it takes a lot of time for it to slowly flow down under the influence of gravity.
The influence of the type of compressor on the waiting time
The modern market for household appliances offers various types of motors. The design compressors also determines how long it will take to adapt. Old models and modern inverter systems have their own characteristics.
Classical linear compressors (piston) are more sensitive to oil getting into the circuit. They create high pressure, and the presence of excess fluid in the compression chamber is detrimental to them. Therefore, for older models or budget lines, the “day after lying down” rule is ironclad.
Inverter compressors, which are often found in models Samsung or LG, operate more smoothly and have a different motor suspension system. However, this does not mean that they do not require rest. Oil in them can also migrate, although structurally they are slightly more resistant to hydraulic shock.
The table below shows approximate data on settling time depending on the type of motor and method of transportation:
| Type of compressor | Vertical transportation | Transportation lying down/strong tilt | Risk of breakage in a hurry |
|---|---|---|---|
| Linear (Piston) | 2-4 hours | 12-24 hours | High |
| Inverter | 2-3 hours | 8-12 hours | Medium |
| Linear-inverter | 3-4 hours | 12-18 hours | High |
Please note that the data in the table are averaged. It is always a priority to read the instructions of a specific manufacturer, since engineering solutions may differ.
Seasonal factor: ambient temperature
The time that the refrigerator should stand also depends on the air temperature in the room where it was delivered. The physical properties of oil and refrigerant change depending on heating or cooling.
If you brought equipment in the winter and it spent several hours in an unheated car or in the cold, the situation becomes more complicated. Cold oil becomes thick and viscous. It takes much longer for it to drain back into the compressor crankcase, even if the refrigerator was transported vertically.
⚠️ Attention: It is strictly forbidden to turn on a frozen refrigerator immediately after bringing it into a warm room. A sharp temperature change will cause the formation of condensation inside the electrical circuits, which will lead to a short circuit.
In winter, the algorithm of actions should be as follows: after bringing it into the apartment, let the equipment warm up to room temperature while turned off. This will take 3–5 hours. Only after the housing is no longer cold to the touch can you count the time for the oil to drain.
In summer, in hot weather, the oil is thinner and drains faster. However, high ambient temperatures may cause the compressor to overheat when first started if it is operated under load immediately. Therefore, in summer it is also recommended to withstand the standard 4–6 hours.
What to do if the refrigerator is brought in from the cold?
If the equipment was in severe frost (-10°C and below), leave it alone for at least 24 hours. This is necessary not only for the oil to drain, but also for the complete drying of condensation that could form inside the case when warm air comes into contact with cold parts.
Step-by-step instructions: how to properly start the refrigerator
After you have waited the required time, you cannot simply plug the plug into the socket and forget about the device. Correct first start is the key to long service life. Follow this algorithm to eliminate any risks.
First, carefully inspect the case for damage that may have appeared during delivery. Make sure that the shipping bolts (if they were on the compressor, although this is now rare) are removed and all protective films and tape are removed.
Next, you need to wash the internal chambers. Even a new refrigerator can smell like plastic or factory dust. Use a weak soda solution or a special refrigerator cleaner. Do not use abrasives.
☑️ Checklist before first use
After washing, wipe all surfaces dry with a soft cloth. Place shelves and drawers in their proper places. Now you can connect the device to the network. Please note that during the first hours of operation, the refrigerator may operate louder than usual - this is normal, the system is returning to normal.
Do not load food immediately! Let the empty refrigerator run for at least 2-3 hours (preferably until the compressor switches off automatically) for it to reach the desired temperature. Only after this can you pawn the products.
Typical mistakes when starting up for the first time
Many users, wanting to quickly enjoy their purchase, ignore the operating rules. This leads to situations where a new refrigerator stops freezing after a week or month of operation.
One of the main mistakes is installing the refrigerator close to the wall. For normal air circulation, there must be a gap of at least 5–10 cm behind the rear wall. If you break this rule, the compressor will overheat and quickly fail, even if you waited the right time before turning it on.
Another mistake is installation near heat sources. Heating radiators, ovens or direct sunlight cause the refrigerator to wear out. It is also not recommended to place the refrigerator in a niche without top ventilation, unless this is provided for by a special built-in model.
Do not ignore the burning smell when you first turn it on. A slight smell of plastic is acceptable, but if there is a smell of burning wiring, immediately unplug the device. Also monitor the noise level: humming is acceptable, but knocking, clanging or whistling indicate a malfunction.
What to do if the refrigerator does not freeze after turning on?
If 5-6 hours have passed and the temperature inside has not dropped, check whether the door is tightly closed. Make sure the temperature control is not set to minimum. If you hear that the compressor is humming, but there is no cold, there may be a freon leak during transportation (rare) or a compressor breakdown due to improper starting. In this case, you need a specialist.
Is it possible to transport the refrigerator with it on?
Absolutely not. Transporting a working refrigerator is physically impossible, since it is not secured inside the body and requires power. Transporting a refrigerator that is plugged in but not working (on pause) is also prohibited - the cord may be damaged, and vibration during movement will destroy the compressor suspension.
Is it necessary to defrost a new No Frost refrigerator?
The system No Frost does not require manual defrosting during operation, as it has automatic moisture removal system. However, you still need to wash it before first use. There is no need to specifically “defrost” it while waiting for ice, since there should be no ice inside the new unit.
How long does it take the refrigerator to gain temperature after being idle?
Usually the process of primary cooling of empty chambers takes from 2 to 5 hours. The exact time depends on the volume of the chambers, the power of the compressor and the temperature in the room. It is recommended to load food only after the refrigerator turns off at least once or reaches the specified operating mode.