Buying a new refrigerator is always an exciting moment associated with the expectation of comfort and freshness of food. However, immediately after delivering the unit to the apartment, many owners make the same mistake: they rush to connect the device to the power supply and fill its shelves.
This misconception can cost you expensive repairs. First start-up of the refrigerator is not just a click of a plug into a socket, but a complex physical process that requires compliance with certain time intervals to stabilize working fluids.
In this article we will look in detail at why downtime is so important, how long the compressor should run idle and what factors influence the duration of this period.
Why you can’t turn on the refrigerator immediately after delivery
The main reason why manufacturers categorically prohibit instant activation of the technology lies in the physics of the work compressor. During transportation, especially if it was carried out in a horizontal position, engine oil from the compressor crankcase inevitably flows into the cooling system circuits.
If you turn on the unit immediately, the oil that does not have time to drain back into the crankcase may clog the capillary tube or enter the compressor, which will lead to its operation in “dry running” mode. This causes overheating and rapid wear of rubbing parts.
In addition, when a cold engine starts abruptly, a colossal load is placed on it. Freon in the system, it must also take its natural position, and the temperature sensors must warm up to room temperature in order to read the readings correctly.
Ignoring the rules for “resting” equipment often becomes the reason for refusal of warranty service, since service center specialists can easily determine violation of operating conditions by the condition of the oil and compressor.
⚠️ Attention: Even if the refrigerator was transported strictly vertically, vibrations during the movement of the truck could cause mixing of the refrigerant and oil. Let the equipment sit undisturbed in any case.
How long you need to leave the equipment before turning it on
The time that the refrigerator should stand before turning it on for the first time directly depends on the position in which it was transported. This is a critically important parameter that cannot be ignored.
If the device was transported in an upright position, it is enough to let it stand for 2 to 4 hours. This time is enough for the pressure in the system to stabilize and the internal mechanisms to calm down after shaking.
The situation changes dramatically if the transportation was carried out lying down. In this case oil it is guaranteed to leak into the evaporator and condenser. It takes much longer for it to completely return to the compressor crankcase under the influence of gravity.
For horizontal transportation, the minimum settling time is 8 hours, but experts recommend waiting a full day (24 hours). This ensures that even viscous oil at a low temperature will have time to drain down.
The myth about a hairdryer to speed up the process
There is a myth that the oil will drain faster if you heat the compressor with a hairdryer. Absolutely do not do this! A sharp temperature change can damage plastic parts and seals, and local overheating of the motor will lead to its failure. Only natural temperature conditions.
Environmental temperature also plays a role. If the refrigerator is brought in from the cold, it needs time not only to drain the oil, but also to warm up to room temperature so that the condensation on the contacts evaporates.
How long should the refrigerator run idle
After the device has stood for the required time, the first start-up stage begins. Many people ask: how long should it work without food? The optimal operating time idle is from 2 to 4 hours.
During this period, the compressor manages to make several on and off cycles, cooling the empty chambers to the specified temperature values. This allows the system to return to normal operation.
If you plan to load products, you need to do this gradually. Suddenly placing a large volume of warm food will force the compressor to work at its limit, which is undesirable at the first start.
☑️ Checklist before the first load
Modern models with the system No Frost can work longer at the first start-up, since they need not only to cool the volume, but also to start the fans and defrost system to check the functionality.
Normal operating time of the compressor during the first cycle
When turned on for the first time, users are often afraid that the refrigerator is humming incessantly. This is fine. In an empty chamber, heat exchange occurs more slowly, and sensors may not immediately detect the achievement of the desired temperature.
Depending on the ambient temperature in the room and the volume of the chambers, the first cycle of continuous operation can last from 30 minutes to 2 hours. This should be followed by a break.
If the compressor has been running for 5-6 hours without stopping, this is a signal of a malfunction or incorrect setting. Perhaps the door is not tightly closed, or the tightness of the circuit is broken.
| Refrigerator type | Settling time | Idle time | Features |
|---|---|---|---|
| Single-compartment (vertical). hours | 2-3 hours | 2 hours | Fast stabilization |
| Double-compartment (vertical) | 3-4 hours | 3-4 hours | Time is needed for both circuits |
| Any (horizontal) | 8-24 hours | 4-6 hours | Critical for oil |
| No Frost | 4 hours | 4-5 hours | Checking fans |
It is important to understand that cyclical operation is a sign of serviceability. The refrigerator should not thresh for days, it should gain temperature and turn off.
The influence of ambient temperature on startup
The seasonality of delivery has a direct impact on how long the refrigerator should work when first started. In winter, the risks are much higher due to temperature changes.
If the equipment comes into the heat from the cold, condensation forms on the internal elements. Moisture on the electrical contacts can cause a short circuit when first turned on.
In the cold season, the “acclimatization” time before connecting to the network should be increased to 6-8 hours, even if the transportation was vertical. This will allow all components to warm up.
In addition, the oil becomes more viscous in the cold. It takes longer for it to spread and return to the crankcase. An attempt to start a cold, thickened compressor can lead to jamming of the piston group.
⚠️ Attention: Never turn on the refrigerator if it has just been brought in from outside in the cold. Let it warm up to room temperature for at least 4-5 hours.
How to understand that the refrigerator is working correctly
You can determine the serviceability of the unit upon first start-up by several signs. The main indicator is the nature of the compressor operation and temperature conditions.
30-40 minutes after switching on, the walls of the inner chamber should become cool. You feel the cold faster in the freezer. If after an hour of operation the walls are warm and the compressor is hot, there is a problem.
The sound of a running motor should be smooth, without metallic clanging, gurgling (a slight gurgling of freon is acceptable) or whistling. A loud knock or vibration of the case indicates incorrect installation or a defect.
Also pay attention to the door seals. When first started, they may be rigid, but after cooling and straightening they should provide a tight fit, preventing cold air from escaping.
Frequent errors when turning on equipment for the first time
Statistics from service centers show that most breakdowns in the first year of operation are associated with errors during the initial start-up. Owners often ignore the instructions, relying on “maybe.”
One of the main mistakes is loading products immediately after turning them on. Warm bags of food create a heat load that a fragile system (or a system after a long period of inactivity) may not cope effectively with.
Another mistake is installing the refrigerator close to the wall. For correct operation heat exchange a gap of at least 5-10 cm is required from the back wall to the furniture. Without this, the compressor will overheat and work without interruption.
The use of extension cords and low-quality surge protectors when first starting up is also not recommended. The starting currents of the compressor are high, and poor contact can cause sparking or voltage drop, which is detrimental to the motor.
What happens if you turn on the refrigerator immediately after horizontal transportation?
Oil will enter the cooling circuit. The compressor will begin to work overload, trying to pump the mixture of gas and oil. This can lead to water hammer in the compressor and its immediate breakdown, or to blockage of the capillary tube, which will require expensive repairs of the entire system.
Is it possible to speed up the first start of the refrigerator?
Technically, no, and you shouldn’t try. Artificial heating of the compressor or an attempt to “stir up” the system manually can disrupt the factory settings and damage fragile elements. The only way to speed up the process is to plan delivery in advance to ensure natural settling time.
Why does the refrigerator take a long time to turn off when first started?
When first started, the system must cool a large volume of warm air and warm up itself. If the room is hot or the door has been opened frequently, the cycle may take longer. However, if it lasts more than 6-8 hours, you need to check the tightness and settings of the thermostat.
Do you need to wash the refrigerator before turning it on for the first time?
Absolutely. Factory dust, technical grease, or packaging smell may remain inside the camera. Wipe the internal surfaces with a soft cloth with a soda solution or a special product for household appliances and let them dry before turning them on.