Transporting large household appliances is always stressful, especially when the dimensions of the body do not allow the unit to be transported in an upright position. Freight taxi drivers often suggest laying the refrigerator on its side so that it fits into the cabin, claiming that there is nothing wrong with this. Indeed, modern technology has become stronger, but the laws of physics have not been repealed, and ignoring transportation rules can lead to expensive repairs.
The most critical moment comes after you have brought the purchase home. It is strictly forbidden to immediately plug in such a device.. During shaking and tilting, oil from the compressor inevitably flows into the refrigerant circulation system, and if you start the engine ahead of time, it may burn out or simply not start. You will need patience to let the system come into balance.
In this article we will look in detail at what the waiting time depends on, why manufacturers indicate different numbers and how to properly prepare the equipment for the first start after horizontal transportation. Understanding these processes will help you avoid a situation where a new one refrigerator stops freezing a week after purchase.
Physics of the process: why you can’t turn it on right away
To understand the need for a pause, you need to look inside the device. The compressor, which is the heart of the system, operates in an oil bath. Engine oil necessary for lubricating rubbing parts and removing heat. In normal mode, it is located in the compressor crankcase, but when shaking and strong tilting it is pushed into the high and low pressure pipelines.
If you turn on the unit while the oil is in the circuit, the compressor will start to run “dry”. This will lead to rapid overheating and jamming of the piston group. In addition, liquid oil entering the capillary tube will create a so-called “oil plug” that will block circulation freon. The pressure in the system will increase sharply, which can lead to depressurization or failure of the valves.
Another factor is condensate. If there is a sudden change in temperature, for example, if you bring equipment from the cold into a warm apartment, moisture forms inside. Water in electrical circuits or on the contacts of the control board can cause a short circuit. The settling time is necessary not only for the oil to drain, but also for the complete evaporation of moisture from the internal components.
⚠️ Attention: An attempt to start a compressor with oil hydraulic shock often leads to irreversible damage, which is not recognized as a warranty case, since violation of transportation conditions is easily diagnosed by the service center.
Factors influencing settling time
There is no single figure suitable for all models. The time that should stand refrigeration unit before turning on depends on several variables. Manufacturers often play it safe and indicate maximum values, but the real situation may require correction.
The first and main factor is the type of compressor. Inverter models, which are now installed in most premium LG i Samsungs, have a closed design and less oil, but more sensitive electronics. Old linear or piston compressors contain more lubricating fluid, which takes longer to drain back into the crankcase.
The second factor is the duration and nature of transportation. If you drove the equipment for 15 minutes on smooth asphalt, there will be less oil in the circuit than after an hour of shaking on a dirt road. The angle of inclination also matters: if the refrigerator was lying strictly on its side (90 degrees), the risk of oil getting in was higher than when tilted at 45 degrees.
The third factor is the ambient temperature. In winter, the oil becomes more viscous and drains more slowly. In summer, when it is liquid, the process of gravitational return occurs faster. However, there is still no need to rush, since viscosity is not the only parameter that affects the stabilization work of the system.
Dependence of time on season and temperature
Time of year plays a decisive role in determining the duration of the pause. Temperature conditions directly affects the physical properties of technical fluids inside the system. Ignoring this parameter is a common mistake by users, leading to breakdowns.
In the summer, when the air temperature is above 20 degrees, the oil has a low viscosity. It easily flows down the walls of the tubes back into the compressor under the influence of gravity. However, it is in the summer that the risk of condensation is high if the equipment was transported in an air-conditioned warehouse or car, and then found itself in the heat.
Winter transportation creates a double load. In the cold, the oil thickens, turning almost into a gel, and it takes much longer to drain. In addition, plastic elements become brittle and rubber seals lose their elasticity. A sudden switching on of a cold unit can lead to microcracks in the soldering of the evaporator.
The optimal time for switching on is considered to be the moment when the temperature of the housing is equal to room temperature. This may require 2 to 4 hours just for acclimatization, not counting the time for the oil to drain. Do not try to speed up the process using heaters or hair dryers.
How long to wait: specific dates for different situations
Let's systematize the data and move on to specific numbers. Although instructions may vary, there are generally accepted safety standards that service technicians adhere to. Below is a table to help you navigate the waiting time.
| Transportation situation | Time of year | Recommended settling time |
|---|---|---|
| Vertical, without shaking | Summer | 2-4 hours |
| Vertical, without shaking | Winter | 4-6 hours (until completely warmed up) |
| On the side (up to 15 min) | Summer | 4-8 hours |
| On the side (long) | Summer | 8-12 hours |
| On the side (any duration) | Winter | 12-24 hours |
If your refrigerator was transported in a horizontal position for more than 15 minutes, be guided by the maximum values from the table. It is better to wait an extra few hours than to change the compressor. In the case of winter transportation, when the equipment spent several hours outside or in an unheated body, the period can be increased to a day.
Many users ask whether it is possible to reduce the time if the equipment was lying on its side for only a couple of minutes. The answer from experts is clear: even a short tilt at an angle of 90 degrees can throw oil into the circuit. The minimum safety threshold, below which it is not recommended to fall, is 3 hours.
⚠️ Attention: The indicated periods are relevant for standard household models. Industrial refrigeration cabinets or units with open compressors may require individual calculation of the dwell time from the engineer.
Step-by-step instructions: correct installation after transportation
The commissioning process requires a sequence of actions. Violation of the sequence of stages can negate all efforts to comply with time intervals. Follow this algorithm to ensure a long life for your equipment.
First, you need to unpack the unit and remove all shipping tape. Pay special attention to the interior space: often there are foam liners that secure shelves and drawers. Then install the refrigerator in the prepared place, using a building level to adjust the legs.
☑️ Preparing for the first start
After installation, let the equipment stand with the doors open. This will help remove the smell of new plastic and speed up the equalization of the temperature inside the chambers with room temperature. Only after the recommended waiting time has expired can you connect the power cord to the network.
It is better to do the first start without loading food. Let the unit run idle for at least 2-3 hours. During this time, you will be able to evaluate the quality of cooling and the absence of extraneous noise. If everything is in order, you can gradually fill the chambers.
Why can’t you load food at once?
Loading warm food into a refrigerator that has not yet cooled down will create an extreme load on the compressor. It will work at the limit of its capabilities, trying to cool a large amount of heat, which can lead to overheating of the motor windings in the first hours of operation.
Frequent errors and myths when starting up for the first time
There are many legends surrounding the operation of household appliances. Some of them are harmless, others can be harmful. Let's look at the most common misconceptions so that you don't make typical mistakes when installing a new unit.
Myth one: “If you transport it carefully, you can turn it on right away.” This is a dangerous misconception. Even with the most careful transportation, vibration from a car engine causes fluids to move. The absence of visible damage does not guarantee that the oil remains in the crankcase.
Myth two: “In winter, you can turn it on faster if you wipe it dry.” Surface moisture has nothing to do with the internal oil in the compressor. Wiping with a towel will not speed up the gravitational outflow of lubricant from high-pressure pipelines.
Myth three: “Old refrigerators take longer than new ones.” On the contrary, older models used thicker oils and less precise tolerances in the friction pairs, which made them a little more forgiving to errors. Modern environmentally friendly refrigerants and synthetic oils require strict adherence to regulations.
It is also worth mentioning the error associated with defrosting. If you are moving an old refrigerator that was previously working, the rules are even stricter. In this case, the settling time should be doubled, since the system is guaranteed to have oil residues and possible condensation from the previous defrost.
Diagnostics of problems after incorrect switching on
What to do if you couldn’t bear the pause and turned on the equipment, but it stopped working? The first signs of trouble appear almost immediately. The unit may hum, but not cool, or may not respond at all when plugged in.
If you hear a loud knock or hum when starting, which then gives way to silence (the thermal protection relay is triggered), this is a sign of an oil wedge or water hammer. In this case, you must immediately disconnect the device from the network and let it stand for at least another 24 hours in a vertical position.
In some cases, after a long standstill (a day or two), the compressor manages to “swing” and start. However, the resource of his work after such stress is significantly reduced. If the refrigerator turns on but does not freeze, an oil plug may have formed in the capillary, and intervention by a technician cannot be avoided.
⚠️ Attention: If, after an incorrect start, the refrigerator emits a burning smell or a crackling sound is heard, do not try to turn it on again. This may cause the wiring to catch fire. Call a specialist for diagnostics.
Questions and answers (FAQ)
Is it possible to transport a refrigerator on the door and not on its side?
It is strictly not recommended to place the refrigerator on the door. The weight of the door itself and the handles can deform the frame or damage the hinges. In addition, the inner door lining is not designed to withstand such loads and may crack. The only acceptable position is strictly on the back wall (if allowed by the model) or on the side.
Do you need to secure the shelves with tape during transportation?
Yes, this is necessary. Glass shelves and plastic drawers may break or scratch the interior walls of the chamber when shaken. It is best to remove all removable elements and transport them separately, wrapped in soft cloth or bubble wrap.
What should you do if the refrigerator makes a lot of noise after settling?
A little noise in the first hours of operation is normal, as the system enters operating mode. However, if the noise or vibration increases, check that the shipping bolts have been removed from the compressor (if your model has them) and that the unit is level on the floor. Adjusting the legs often solves the problem of vibration.
Does the brand of the refrigerator affect the waiting time?
The operating principle of all compressors is the same, so the physics of the process is the same for Bosch, Indesit or Atlant. However, design features may vary. Always check the manufacturer's instructions, as in some models the oil may drain faster due to the special design of the tubes.