Buying a new refrigerator is always a joyful event, marking the renewal of household appliances in the kitchen. However, immediately after the delivery people take away the box, many owners make a critical mistake, trying to start the unit instantly. The question of how long it takes to turn on a new refrigerator is one of the most important for ensuring the longevity of the compressor and the proper operation of the cooling system.
Ignoring the rules for the initial start-up can lead to serious damage that will not be recognized as a warranty case. Manufacturers of household appliances establish clear time intervals necessary for stabilizing technical fluids and adapting internal mechanisms. In this article we will take a closer look at why there is a ban on instant start-up and how to properly prepare your new purchase for operation.
The main reason for waiting lies in the design of the compressor and circulation refrigerant. During transportation, especially if the refrigerator was subjected to shaking or tilting, oil from the compressor may leak into the cooling system circuits. If you start the engine right away, it will work without lubrication, which will lead to rapid wear or jamming of the piston group.
Physical processes: why you can’t rush
Freon and special compressor oil circulate inside the sealed circuit of the refrigerator. During normal operation, the oil is in the compressor crankcase, providing lubrication to the rubbing parts. When transporting, the unit is often tilted so that it fits into the doorway of an elevator or stairwell. At this moment, the oil enters the evaporator or condenser through the tubes.
If you turn on the device until the oil flows back into the compressor, the so-called water hammeroccurs. The liquid entering the compression chamber is not compressed like a gas, but creates excess pressure that can break the valves. In addition, running “dry” in the first seconds of startup is critically dangerous for the motor.
⚠️ Attention: An attempt to turn on the refrigerator immediately after delivery may lead to compressor failure. Repairing or replacing this unit is often not economically feasible and can cost up to 70% of the price of a new device.
It is also important to consider the temperature regime. If the refrigerator was delivered in winter at subzero temperatures, condensation will form inside the case when it is brought into a warm room. Moisture can get on the electrical contacts, causing a short circuit. Therefore, waiting time is necessary not only for the oil, but also for evaporation of condensate and warming up the electronics.
The influence of the type of compressor on the waiting time
The time after which the refrigerator can be turned on directly depends on the type of engine installed in it. Modern models are equipped with different types of compressors, each of which has its own design features and operating requirements. Incorrect determination of the device type can lead to errors in calculating downtime.
The most common are inverter and conventional piston compressors. Inverter models, such as Liebherr or LG with Linear Compressor technology, are often more sensitive to the quality of the lubricant and the condition of the refrigerant. Conventional compressors are more durable, but also require time to return the oil to the crankcase.
There is an opinion that modern synthetic oils return faster than mineral oils, but manufacturers rarely make differences in the instructions, recommending a universal waiting rule. To accurately determine the type of your unit, it is best to refer to the technical documentation or the sticker on the back wall.
What is the difference between an inverter compressor?
An inverter compressor works continuously, changing power, while a conventional one turns on and off. Inverters are quieter and more economical, but more expensive to repair and more sensitive to voltage drops and the quality of lubrication at start.
Below is a table showing the recommended settling time for various types of equipment depending on transportation conditions:
| Compressor type | Transportation conditions | Minimum waiting time | Recommended time |
|---|---|---|---|
| Regular (piston) | Vertical, without shaking | 2 hours | 4 hours |
| Regular (piston) | With tilt or shaking | 4 hours | 8-12 hours |
| Inverter | Vertical | 4 hours | 8 hours |
| Inverter | With an inclination of more than 40 degrees | 8 hours | 24 hours |
| No Frost / Absorption | Any conditions | 6 hours | 12-24 hours |
Seasonal factor: delivery in winter and summer
The time of year plays a huge role in the process of adapting the refrigerator. In summer, when the air temperature is high, the processes of heat exchange and moisture evaporation occur faster. However, in winter the situation changes dramatically, and haste becomes even more dangerous.
When delivered in cold weather (below -5°C), the oil in the compressor thickens, becoming viscous, like tar. If you turn on such a compressor right away, it will experience enormous loads, trying to turn the thickened mass. This can lead to burnt windings or destruction of the mechanical parts of the motor. In addition, plastic and rubber seals become fragile in the cold.
You need to be extremely careful when bringing the refrigerator from the cold into a warm room. A sharp temperature change causes abundant condensation not only outside, but also inside the case, including the electronic control boards. Moisture on the contacts is a risk of a short circuit during the first start-up.
There is a “golden rule” for winter operation:
- 🌨️ Let the refrigerator stand in the package in the corridor for at least 1-2 hours to equalize the temperature.
- 🌨️ After After unpacking, do not plug it into the network for at least another 4-6 hours, even if it was standing upright.
- 🌨️ If the equipment was transported lying down or with a strong tilt, the waiting time increases to 24 hours.
Correct installation and preparation for the first launch
Before deciding how long after you can turn on the new one refrigerator, you need to install it correctly. An uneven floor surface is a common cause of noise and vibration, which users mistake for defects. Adjusting the legs allows you to set the case strictly at level.
It is important to ensure sufficient clearance between the back wall of the refrigerator and the wall of the room. To effectively remove heat, the condenser requires free air circulation. If the equipment is built into a niche, the requirements for ventilation become even stricter.
The preparation process includes several stages:
- 🧹 Remove the shipping bolts and tapes (if they are on the internal shelves).
- 🧹 Wipe the internal chambers with a damp cloth with a weak soda solution to remove factory dust and smell.
- 🧹 Leave the doors open for 1-2 hours for ventilation.
- 🧹 Connect the refrigerator to a separate grounded outlet, avoiding the use of extension cords.
After turning on the empty refrigerator, let it work 2-3 hours without loading products. During this time, the unit will reach the required temperature, and the automation will turn off the compressor. Only after the first cooling cycle can you start loading.
⚠️ Attention: Do not fill the refrigerator with food immediately after turning it on. The thermal load on an uncooled unit will cause the compressor to wear out, which can shorten its service life.
☑️ Preparation for the first start-up
Frequent errors when starting up for the first time
Even knowing the theory, users often make practical mistakes. One of the most common is an attempt to speed up the cooling process by setting the minimum temperature immediately after switching on. This creates a peak load on the system.
Another mistake is installing the refrigerator close to the wall or in a niche without ventilation. As a result, heat is not removed, the compressor overheats and turns on frequently. It is also dangerous to use sockets located behind the refrigerator, where it is difficult to reach in case of sparks.
Some users ignore the smell of plastic in a new refrigerator. This is normal, but if the smell is strong and chemical, it may be that poor quality materials were used in production. In this case, ventilation should last longer.
Symptoms of improper starting
How to understand that the refrigerator was turned on too early or with irregularities? The first sign is unusual noise, knocking or humming when the compressor is running. This may indicate operation without lubrication or liquid getting into the compression chamber.
The second sign is that the refrigerator does not gain temperature or works without stopping. The third is knocking out plugs or circuit breakers in the panel immediately when turned on, which indicates a short circuit due to condensation.
If you notice these symptoms, immediately disconnect the device from the network. Let it sit unplugged for another 12-24 hours. If, after restarting, the problems persist, you must contact a service center.
In conclusion, it is worth noting that patience when installing new equipment pays off in years of trouble-free operation. Compliance with simple time intervals is the minimum payment for maintaining the warranty and the serviceability of a complex mechanism.
What to do if the refrigerator hums loudly after turning it on?
Check whether the shipping bolts have been removed (if any), whether the equipment is level, and whether it is touching walls or furniture. If the compressor is humming, it may be running without oil due to early switching on.
Is it possible to turn on the refrigerator immediately if it was standing vertically in the store?
Even if the refrigerator was standing vertically, vibration and tilting occurred when loading it into the car and moving along the road. The oil may have shifted. The minimum waiting time is 2 hours, but it is better to let it stand for 4 hours.
What happens if I turn on the refrigerator 1 hour after delivery?
Most likely, nothing bad will happen if the transportation was careful. However, the risk of running the compressor with insufficient oil remains. It’s better not to risk it and wait for the recommended time.
Do you need to wash a new refrigerator before turning it on?
Yes, definitely. Factory dust, shavings, or a plastic smell may remain inside. Wipe the chambers with a soft cloth with a solution of baking soda (1 tablespoon per liter of water) and wipe dry.
How long can you load food after turning it on?
After the refrigerator has been empty for 2-3 hours and has turned off (or reached the set temperature), you can load food. Do not put hot food or fill the chamber completely at once.
Does the type of refrigerant (freon R600a or R134a) affect the waiting time?
The type of gas does not have a direct effect on the waiting time. The main thing is to return the oil to the compressor. However, modern gases (for example, isobutane R600a) are more explosive if leaked, so tightness and correct installation of the tubes are important, but the settling time remains standard.