You have just purchased a new refrigerator - a modern model with an inverter compressor, or perhaps a stylish retro unit from No Frost, inverter compressor or perhaps a stylish retro unit from Smeg. The delivery went without problems, but the master loader warned: “Don’t turn it on right away!” Why? After all, the equipment is new, the factory packaging is intact, and the instructions lie unread. Maybe this is just reinsurance?
In fact, prohibition on immediate switching on is not a whim of manufacturers, but a technical necessity. It's a matter of oil, refrigerant and the physics of processes inside the system. If you ignore this rule, the consequences can range from minor failures to complete failure of the compressor already in the first hours of operation. In this article, we will look at what exactly happens inside the refrigerator during transportation, why it needs a “rest”, and how to properly prepare the equipment for the first start - taking into account the model, type of refrigerant and even the weather outside.
What happens to the refrigerator during transportation?
Even if your LG InstaView or Bosch Serie 6 was transported in its original packaging with foam inserts, critical processes took place inside it. The main “culprits” are compressor oil and the refrigerant (usually isobutane R600a or R134a). When moving, tilting and vibrations:
- 🔄 Oil from the compressor enters the cooling circuit, clogging the capillary tubes. It’s as if a clot got into a person’s blood vessels - circulation is disrupted.
- ❄️ The refrigerant condenses in the wrong places (for example, in the evaporator), which can lead to water hammer during startup.
- 🌡️ The temperature inside and outside the unit changes sharply, especially if transportation took place in winter or during heat.
Manufacturers take these risks into account: the instructions for the models Samsung RB or Indesit NBA clearly state the minimum exposure time - from 2 to 24 hours. But why such a spread?
How long should a refrigerator sit: table by type
The “rest” time depends on three factors: refrigerant type, transport angle and ambient temperature. Below are current recommendations for popular brands (data based on service manuals 2023–2026):
| Refrigerator type | Refrigerant | Inclination angle during transportation | Air temperature | Minimum holding time |
|---|---|---|---|---|
| Inverter models (LG, Samsung, Haier) | R600a | Up to 40° | +10°C…+25°C | 4–6 hours |
| Linear compressors (Atlant, Biryusa) | R134a | Up to 90° (lying) | +5°C…+30°C | 8–12 hours |
| Side-by-Side (Samsung, Bosch) | R600a/R134a | Up to 30° | Below +10°C | 12–18 hours |
| Retro models (Smeg, Gorenje) | R290 (propane) | Up to 45° | Above +30°C | 24 hours |
Please note: if the refrigerator transported lying on your side (for example, in the trunk of a car), the exposure time increases by 1.5–2 times. This is due to the risk of oil getting into the discharge line.
⚠️ Attention: The instructions for some models Liehherr i Miele indicate that when transported in a horizontal position (more 40°) requires holding for up to 24 hours, even if a special compressor transport lock was used.
What will happen if you turn on the refrigerator right away: 5 real consequences
Ignoring the “sludge” rule is fraught not only with a decrease in efficiency, but also with serious breakdowns. This is what happens in the system when it starts prematurely:
- Compressor water hammer. The oil accumulated in the circuit does not have time to return to the crankcase. When starting, the compressor piston hits an incompressible fluid - this leads to deformation of the valves or breakage of the connecting rod. Repairs will cost 50–70% of the cost of a new refrigerator.
- Clogged capillary tube. Oil and moisture particles form a plug, which prevents the refrigerant from circulating. Symptom: the freezer is working, but the refrigerator compartment is not cooling.
- Overheating of the compressor windings. Without normal lubrication, the friction of parts increases, which leads to an increase in temperature and the risk of interturn short circuit.
- Incorrect operation of the electronic unit. In models with Smart Inverter (for example, Samsung RB37A5200), sensors may show false errors if the refrigerant is not distributed evenly.
- Reduced service life of seals. Sharp pressure changes during a “dry” start accelerate the wear of rubber door parts.
According to statistics from service centers, 18% warranty failures in the first 3 months of operation are associated precisely with violation of transportation rules and premature switching on.
How to properly prepare a refrigerator for the first start: step-by-step instructions
To ensure that the new one lasts for many years, follow this algorithm: Atlant XM 4625-100 or Bosch KAN92VI30R served for many years, follow this algorithm:
Install the refrigerator on a flat surface (use a level)|Check the gaps: 5 cm in the back, 2-3 cm on the sides|Remove the transport bolts (if any) from the compressor|Wipe the internal surfaces with a weak soda solution|Make sure the socket is grounded and can withstand the load 16A|Let the equipment settle according to the table above-->
Pay special attention transport bolts —they fix the compressor during transportation. In models Indesit i Ariston they are often forgotten to be removed, which leads to vibrations and noise. The bolts are usually located on the rear panel (see instructions).
After switching on:
- 🕒 Give the refrigerator 2-3 hours to enter operating mode (do not load food during this time!).
- ❄️ Install temperature: +4°C for the refrigerator compartment, –18°C for the freezer.
- 🔌 Do not connect additional devices (for example, an ice maker) on the first day.
⚠️ Attention: If the refrigerator was delivered in winter at a temperature below -5°C, keep it in a warm room for at least 12 hours before turning it on. A sharp temperature change can cause condensation on electronic boards.
Frequent errors when first turned on: what not to do
Even experienced users sometimes miss important nuances. Here are the top 5 errors that lead to breakdowns:
- 🚫 Use of extension cords. The refrigerator must be connected directly to a grounded outlet. An exception is voltage stabilizers (for example, Resanta ACH-5000/1-C).
- 🚫 Loading products immediately after starting. The compressor needs time to gain optimal pressure. Fill the chambers no earlier than after 3-4 hours.
- 🚫 Ignoring the levelIf the refrigerator is tilted (even 2-3°), the door may not close tightly, which leads to freezing of the evaporator.
- 🚫 Independent “defrosting” of the freezer in models with No Frost. The system should go through the first defrost cycle automatically.
- 🚫 Setting the temperature to maximum “to speed up cooling.” This leads to overload of the compressor.
If you bought a refrigerator with a function Super Cooling (for example, Liebherr CPesf 4023), do not activate it on the first day. The forced cooling mode creates an additional load on the system.
What to do if the refrigerator makes a lot of noise after switching on?
If a new refrigerator makes loud sounds (knocking, humming, gurgling) in the first hours of operation, this may be the norm:
- Gurgling — refrigerant circulation through tubes.
- Crackling - thermal expansion of plastic parts.
- Low-frequency hum - operation of the inverter compressor (especially in LG i Samsung).
You should contact the service only if the noise is accompanied by errors on the display or a burning smell.
Features for refrigerators with different types of compressors
Compressor technology directly affects the rules for the first start-up Let's look at the three most common ones. common types:
1. Linear compressors (classic)
Installed in most budget models (Atlant, Biryusa, StinolFeatures:
- 🔧 Less sensitive to tilts, but require mandatory exposure 6-12 hours due to the risk of oil starvation.
- 🔊 They operate louder than inverter ones, so the noise may seem excessive during the first hours.
2. Inverter compressors
Used in premium models (LG Door-in-Door, Samsung Family Hub). Advantages:
- ⚡ They reach operating mode faster (can be turned on after 4 hours at room temperature).
- 📉 They load the network less, but are sensitive to voltage drops.
Important: Inverter compressors do not like frequent switching on/off. After the first start, try not to disconnect the refrigerator from the network for at least a day.
3. Linear inverter compressors
Hybrid technology (Hitachi, some models Panasonic). They combine the advantages of both types, but:
- ⏳ They require at least 8 hours of exposure due to the complex control system.
- 🛠️ Sensitive to the quality of power supply - it is recommended to use a surge protector.
What to do if the refrigerator is already turned on ahead of time?
If you ignored the recommendations and turned on the refrigerator immediately after delivery, do not panic. Subsequent actions depend on the behavior of the equipment:
| Symptom | Possible cause | Actions |
|---|---|---|
| The refrigerator works, but does not cool | Clogged capillary pipes with oil | Turn it off for 12-24 hours, then turn it on again. If that doesn’t help, call a technician. |
| Clicking is heard, the compressor does not start | Hydraulic hammer or protection has tripped | Disconnect from the network at day. If after switching on the problem repeats, diagnostics are needed. |
| Strong vibration, humming | Transport bolts have not been removed or the compressor is skewed | Check the compressor fastenings and installation level. |
Error on the display (for example E1 or F5) |
Sensor malfunction due to uneven distribution of refrigerant | Reset the error according to the instructions (usually holding the button Power 10 seconds). |
If the refrigerator is working normal, but you are worried about the consequences, pay attention to:
- 📈 Electricity consumption. In the first days it may be higher than usual (check the meter).
- ❄️ Frosting of the back wall. data-i="215">) this is normal, but if the ice does not melt after 24 hours, there is a problem. Direct Cool (For example, Indesit DF 4180) this is normal, but if the ice does not melt after 24 hours, there is a problem.
⚠️ Attention: If the refrigerator was delivered in a lying position and turned on immediately, and then stopped cooling, do not try to repair it yourselfIn this case, a professional is required. purging the system and changing the oil is a warranty case.
FAQ: Answers to frequently asked questions
Is it possible to speed up the process of “settling” the refrigerator?
No, physical processes (oil distribution and refrigerant) do not depend on external conditions. The only thing that can be done is to install the refrigerator in a warm room (not lower than +15°C) if transportation took place during the cold season.
How to understand that the refrigerator is ready to turn on?
Signs:
- The minimum holding time has passed (see table) above).
- The refrigerator body is at room temperature to the touch (no condensation).
- When you shake it slightly, you can’t hear the liquid pouring inside.
What happens if you turn on the refrigerator 1-2 hours after delivery?
The risks depend on models:
- For inverter compressors (for example, LG GA-B489YDQZ) - high probability of failure of the electronic unit.
- For linear compressors (Atlant MXM 2835-90) - risk of water hammer (30% of cases).
- For models with R290 (Smeg FAB32) - refrigerant leakage is possible due to increased pressure.
In 50% of cases, the refrigerator will work normally, but its resource will be reduced by 20-30%.
Do I need to wait if the refrigerator was transported in a vertical position?
Yes, but the time can be reduced:
- If the angle of inclination did not exceed 15° —2–3 hours is enough.
- If the inclination was 15–40° —4–6 hours.
- If the refrigerator was transported lying —at least 12 hours.
Is it possible to turn on the refrigerator immediately if it was delivered in the original packaging with polystyrene foam?
No, the packaging only protects from mechanical damage, but does not prevent the movement of oil and refrigerant inside the system. Even in the original box, the refrigerator must stand.