Transporting large household appliances is always stressful not only for the owners, but also for the unit itself. Vibration, shaking and changes in housing position inevitably affect internal systems, especially the compressor and oil system. That is why the question of how long the refrigerator should sit after transportation is critical for the durability of the device.
Many users make the fatal mistake of turning on the device immediately after bringing it into the apartment. This may lead to failure piston group of the compressor or disruption of refrigerant circulation. The oil, which should be in the crankcase, during transportation is often splashed along the system circuit, and it takes time to drain back.
In this article we will analyze in detail all the nuances of the rest period, the dependence of time on the ambient temperature and the position of the equipment when moving. You will learn why rushing in this matter can cost you expensive repairs, and receive clear instructions for the first start-up.
Physical processes inside the system during transportation
The refrigeration unit is a closed system in which refrigerant and special compressor oil circulate. During normal operation, oil is located at the bottom of the compressor, lubricating the rubbing parts. However, during transportation, especially if the equipment was tilted or shaken, the oil is forced into the evaporator and condenser circuits.
If you start the engine immediately, it will start running “dry” or try to compress the liquid (oil), which is physically impossible without consequences. Hydraulic hammer can instantly damage valves or pistons. In addition, the oil in the heat exchangers creates an “oil plug” that prevents the normal circulation of freon.
The settling time is necessary so that, under the influence of gravity, the oil flows back into the compressor crankcase. The speed of this process directly depends on the viscosity of the oil, which, in turn, depends on temperature. In a cold room, the oil thickens and drains more slowly, requiring more time to recover.
⚠️ Attention: Even if the refrigerator was transported strictly vertically, microvibrations could cause the oil to foam and get into the tubes. A short rest is required in any case.
Modern inverter models may be less sensitive to tilts, but the law of physics is the same for all: liquids must take their natural position. Ignoring this rule is the fastest way to shorten the service life of new or transported equipment.
Dependence of settling time on air temperature
One of the main factors determining how many hours a refrigerator should stand is the temperature difference between the street (or cargo compartment) and the room where it was brought. A sharp temperature change causes moisture condensation inside the electronic components and on the contacts.
If you transported equipment in winter, at subzero temperatures, condensation will form not only outside, but also inside the case. Water is an excellent conductor and can cause a short circuit when voltage is applied. Therefore, in the cold season, the holding time increases.
- ❄️ Winter transportation (below 0°C): A holding time of at least 6-8 hours is required, and ideally up to 12 hours to completely warm up the internal components to room temperature.
- 🌤️ Off-season (from +5°C to +15°C): 3-4 hours are enough for stabilization temperature conditions and oil drainage.
- ☀️ Summer transportation (above +20°C): In the absence of strong shaking and tilting, the minimum time is 2 hours, but it is better to let it stand for 3-4 hours.
It is important to understand that we are talking not only about oil, but also about the plasticity of materials. Rubber seals and plastic fastening elements become brittle at low temperatures. A sudden start of the compressor, causing vibration, can damage cooled parts.
The influence of the position of the refrigerator during transportation
The position of the body during transportation is the second key parameter. Manufacturers always recommend transporting equipment vertically, but the realities of moving often dictate their own conditions, and refrigerators have to be placed on their sides.
When transported in a horizontal position, the risk of oil getting into the cooling circuit increases many times over. Oil can fill a significant portion of the capillary tube, creating a serious barrier to freon. In this case, much more time is required for settling.
If you managed to carry the unit vertically, maintaining an inclination angle of no more than 40 degrees, then the oil most likely remained in the crankcase. However, even in this case, vibration could disrupt its structure or distribution, so a minimum rest period is still necessary.
| Transport position | Minimum rest time (summer) | Minimum rest time (winter) | Risk of oil contamination |
|---|---|---|---|
| Vertical (angle < 40°) | 2 hours | 4-6 hours | Low |
| On the side (on the back wall) | 4-6 hours | 8-10 hours | Medium |
| On the side (on the door/side) | 6-8 hours | 10-12 hours | High |
There is a common myth that if you drive “in the direction of travel” or “against” the oil will not leak out. This is a misconception. When shaking and tilting, oil flows regardless of the direction of movement of the machine. The only thing that matters is the final position in space.
What will happen if you do not observe the holding time?
If you start the refrigerator too early, the compressor may burn out due to lack of lubrication or jam due to water hammer. Repair in this case is often not economically feasible, since the cost of a new motor-compressor with work is a significant part of the price of the device.
Features for different types of compressors
The modern market offers various types of refrigeration units, and the requirements for their operation may differ. Standard compressors and inverter models have different designs and sensitivity to the state of the lubrication system.
Conventional linear compressors are noisier and create more vibration, but they are quite robust to operating conditions. However, they use more oil for lubrication, and its volume in the circuit can be critical if transported incorrectly. Linear compressors, which can often be found in brand models, operate more smoothly and have a different suspension system. They are less sensitive to tilting, as they often do not have suspension springs that can be damaged. However, the law of communicating vessels has not been canceled, and the oil needs time to return.
Inverter compressors, which can often be found in brand models LG, Samsung or Bosch, operate more smoothly and have a different suspension system. They are less sensitive to tilting, as they often do not have suspension springs that can be damaged. However, no one has repealed the law of communicating vessels, and the oil needs time to return.
In models with a system No Frost the circuits are more complex, there are more bends and channels for air circulation. The likelihood of oil getting stuck in hard-to-reach places is higher, so for such units it is better to increase the recommended downtime by 1-2 hours.
Step-by-step instructions: how to properly prepare for launch
After the refrigerator has stood for the required time, you cannot simply stick a fork into the outlet. There is a correct algorithm of actions that will help make sure that the equipment is ready for work. Following these steps will protect you from hidden defects.
First, conduct a visual inspection. Make sure that there are no new dents on the housing caused by skidding and that all shipping bolts (if any were on the compressor) have been removed. Although modern models rarely have bolts on the compressor, check the instructions for your model Indesit or Atlant just in case.
The next step is the inclusion stage. Plug in the refrigerator, but do not load it with food. Let it run idle. This will allow the system to return to mode, and you will be able to evaluate the operation of the compressor and the absence of extraneous noise.
☑️ Checklist before turning on for the first time
During the first hour of operation, listen to how the unit operates. The hum should be smooth, without clicks, gurgles or metallic clangs. If you hear the compressor trying to start, clicking and turning off, immediately unplug the device. This is a sign that the oil has not yet drained or a plug has occurred.
Typical mistakes when starting up for the first time
Even knowing the theory, people manage to make the same mistakes. The most common of them is the desire to quickly check the operation of the equipment. Impatience in this case is the worst advisor.
Another mistake is loading the refrigerator with food immediately after turning it on. The heat load on an unheated system can cause the compressor to run non-stop, trying to cool a large volume of warm food. This is an overload for a unit that has just undergone stress.
⚠️ Attention: Never wash the internal glass shelves with hot water immediately after winter transportation. Sudden temperature changes can cause tempered glass to break. Let the glass warm up to room temperature.
Also, users often forget to check the level. After moving and installing in a new place, be sure to adjust the legs of the refrigerator. If it is not level, the door may not close tightly, and the compressor will experience increased load due to frame misalignment.
FAQ: Frequently Asked Questions
Is it possible to turn on the refrigerator immediately if it was transported vertically and carefully?
Even with ideal vertical transportation, vibration could displace the oil. A minimum rest of 1-2 hours is required to equalize pressure and temperature. The risk of breakdown when turned on instantly remains high.
What to do if the refrigerator is turned on immediately and it does not cool?
Urgently unplug it from the outlet. Let sit undisturbed for at least 6-8 hours. If after restarting the problem persists, an oil plug may have formed or a water hammer has occurred, and a call to the technician is required.
Does the brand of the refrigerator affect the settling time?
Physical processes are the same for all brands, be it Liebherr or Beko. However, the design of compressors may differ. In any case, you need to focus on the worst-case scenario (horizontal transportation) to guarantee safety.
Do you need to remove the shelves and drawers during settling?
There is no need to remove them, but it is better to keep the doors ajar in the first couple of hours so that the smell of packaging and plastic disappears, and the temperature inside evens out faster cameras.