Moving or purchasing new household appliances often poses the difficult question of proper transportation to owners. Manufacturers categorically do not recommend transporting refrigeration equipment in a horizontal position, but circumstances sometimes dictate their own conditions. If you decide to lay the unit on its side, you must strictly observe the time intervals before the first start, otherwise there is a high risk of failure of expensive components.
The main danger when transporting in a lying position lies in the movement compressor oil from the engine crankcase to the refrigerant circuit. Also in the system, deformation of the compressor suspension or disruption of the integrity of the tubes may occur. To avoid costly repairs, it is necessary to give the equipment time to “rest” and restore the natural position of all fluids and mechanisms.
The time that should pass from the moment the refrigerator is installed in a vertical position until it is plugged into the network directly depends on the duration and position during transportation. Ignoring this period can lead to hydraulic shock in the compressor, when the oil, which has not had time to drain, tries to be compressed by the piston group. This is fraught with breakdown of the valves or jamming of the motor, which is practically impossible to repair at home.
Physical processes inside the compressor during transportation
Inside hermetic compressor there is oil that lubricates the rubbing parts parts and provides heat dissipation. In normal operating position it is located at the bottom of the crankcase. When the equipment is placed on its side, the oil flows under the influence of gravity into the evaporator and condenser tubes, as well as into the compression chamber itself.
If you turn on the unit immediately, the oil will not have time to return to the crankcase. Excess pressure will arise in the system, and the piston group will operate in dry friction or water hammer mode. Mixed with oil, it also loses its optimal heat transfer properties in the first minutes of operation. That is why the pause before starting is critical for the safety Freon, mixed with oil, also loses its optimal heat transfer properties in the first minutes of operation. This is why the pause before launch is critical for safety refrigerant and mechanics.
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⚠️ Attention: Modern inverter compressors are especially sensitive to the presence of oil in the circuit. Even a small amount of lubricant in the heat exchanger can reduce cooling efficiency by 15-20% in the first hours of operation.
In addition, when shaking during transportation, the oil can mix with the refrigerant, forming an emulsion. It takes time and a static position to separate these substances. The longer the equipment was in motion, the more time it will take to stabilize the internal processes.
Dependence of settling time on the duration of transportation
There is a direct correlation between the time spent by the refrigerator in transit and the required period of rest. The logic is simple: the longer the unit was in a horizontal position, the deeper the oil could penetrate into the system and the longer it will drain back under the influence of gravity.
If the transportation took less than an hour, and the road was ideal, the minimum settling time can be 2-3 hours. However, this is an “extreme” minimum that it is better not to count on. For a standard city transportation lasting 1-2 hours, a holding time of at least 4-6 hours is recommended.
In the case of long-distance travel, when the equipment has been lying for more than 4-5 hours, the waiting time should be increased to 12-24 hours. This will allow the oil to completely leave the heat exchangers and return to the crankcase compressor. An attempt to speed up this process by artificial heating or tilting the unit will not give a guaranteed result.
☑️ Check after transportation
Table of recommended exposure times
For the convenience of users, technical specialists have summarized the main scenarios in a single table. Please note that the data is given for an ambient temperature of approximately +20°C. At lower temperatures, the viscosity of the oil increases and the process of its drainage slows down.
| Duration of transportation lying down | Recommended settling time | Minimum permissible time | Risk of breakage |
|---|---|---|---|
| Up to 30 minutes | 4-6 hours | 2 hours | Low |
| 1-3 hours | 8-12 hours | 4 hours | Medium |
| 3-6 hours | 12-18 hours | 8 hours | High |
| More than 6 hours | 24 hours | 12 hours | Critical |
The table shows that the “gold standard” of safety is exposure for 24 hours. This is especially true for older models or used equipment, where the condition of the oil may have already changed.
It is important to understand that the indicated periods are recommendations, but not absolute. At air temperatures below +10°C, the settling time must be increased by 1.5-2 times, since cold oil drains much more slowly.
The influence of ambient temperature on oil spreading
The temperature factor plays a key role in the physics of the process. The oil used in refrigeration compressors has a high viscosity, which directly depends on temperature. In the cold season or in an unheated room, the oil becomes thick, almost like honey.
If you brought the refrigerator in from the cold or transported it in an unheated body in the winter, you cannot turn it on immediately after it has stood for the required time at room temperature. It is necessary to wait until all internal components warm up to room temperature, and only then count the settling time.
⚠️ Attention: A sudden change in temperature can cause condensation inside electrical circuits. Connecting a wet device to the network will lead to a short circuit.
The optimal temperature for “resting” equipment is considered to be the range from +18°C to +25°C. Under such conditions, the oil regains its fluidity faster. If the room is cold, the process may take longer, and the standard 8-12 hours will not be enough to completely return the lubricant to the crankcase.
Procedure after installing the refrigerator
After you have delivered the equipment to its destination and installed it vertically, the process of preparing for the first start begins. First, remove the shipping bolts and straps, if present. Then you should carefully wash the internal chambers with warm water and a mild detergent.
Next comes a step that is often forgotten - a visual inspection. Check the rear grille for dents or oil marks that could have been caused by microcracks caused by shaking. Make sure that the legs of the refrigerator are adjusted so that the doors close tightly and with little force.
Only after all preparatory procedures have been completed and the recommended time has elapsed, you can connect the unit to the network. During the first hours of operation, do not load the chambers with products. Let the equipment run idle so that it reaches the required temperature and stabilizes the operating mode thermostat.
What should you do if the refrigerator makes noise after turning it on?
If after turning it on you hear an unusual hum, gurgling or knocking, immediately unplug the device. This may indicate that oil has entered the compressor cylinder, and attempting further operation will lead to a wedge. Call a technician for diagnostics.
Frequent errors when you first turn on
Many users, wanting to launch equipment faster, make a number of typical mistakes. The most common of them is ignoring instructions in favor of haste. People often think that if the equipment is visually intact, then everything is fine inside, but no one has canceled the laws of physics.
Another mistake is loading products immediately after turning them on. The refrigerator takes time (from 2 to 6 hours depending on the model) to cool the empty chambers to the set temperature. If you put food there at this moment, the compressor will work with overload, trying to cool the warm cargo, which, combined with a possible lack of oil, can be fatal.
- ❌ Turning on the network ahead of the time specified in the instructions.
- ❌ Loading warm food into a newly installed refrigerator.
- ❌ Installing the unit close to the wall, which interferes with air circulation.
- ❌ Ignoring the slope of the floor, due to which the oil may be unevenly distributed in the crankcase.
It is also worth mentioning the error associated with the floor level. If the refrigerator is not level, the oil in the compressor crankcase may be skewed, and the intake tube will capture air instead of liquid, which will lead to noise and overheating.
How to check performance after settling
When the allotted time has expired, you can begin testing. Plug in the refrigerator and listen to the sounds of operation. In the first minutes, the sound of flowing liquid may be heard - this is normal, the refrigerant begins to circulate. However, there should be no loud knocking, clanging or intermittent humming.
Check the operation of the light indication and the presence of cold. 30-40 minutes after starting, the door should begin to stick if you try to open it, and it should become noticeably cold inside. If after an hour of operation the chamber walls are warm and the compressor operates continuously, there may be a freon leak or a capillary blockage with oil.
Pay attention to vibration. New equipment may vibrate a little more due to undeveloped mechanisms, but it should not “ride” on the floor. If the vibration is excessive, check the adjustment of the support legs.
Is it possible to transport the refrigerator lying down if there is no other option?
Technically it is possible, but this is always a risk. If there is no other option, place the unit only on the back wall (where the radiator is) or on the right side (when viewed from the front), but never on the left side or front panel. Be sure to secure the doors with tape and place soft material under the equipment.
What will happen if you turn on the refrigerator immediately after transportation?
With an 80% probability, nothing bad will happen in the first minutes, but the life of the compressor will be reduced. In 20% of cases, a water hammer may occur, which will instantly disable the motor. It is also possible that the capillary tube may become clogged with oil, which will require complex repairs involving purging of the system.
Do you need to remove the shelves and drawers during transportation?
Yes, it is better to remove the glass shelves and transport them separately, wrapped in fabric. It is also advisable to remove plastic boxes, since shaking may cause their fastenings to burst. This will reduce the load on the internal frame of the refrigerator.
Does the type of refrigerant affect the settling time?
The type of refrigerant (R600a, R134a) does not have a direct effect on the drainage time of the oil, since the oil circulates separately. However, modern compressors with R600a gas (isobutane) are more sensitive to the quality of the lubricant and the cleanliness of the system, so for them, maintaining the rest time is critically important.