The first start-up of refrigeration equipment is a critical stage on which the durability of the entire unit depends. Many users mistakenly believe that it is enough to simply plug the cord into a socket and wait for the cold to appear, however the process of starting the compressor requires careful attention. Immediately after applying voltage, the system begins to fill the tubes with refrigerant, and the oil should be evenly distributed throughout the mechanism.
The question of how long the refrigerator should operate before the first load of food worries the owners of new equipment. The answer depends on the type of compressor, the duration of transportation and environmental conditions. Inverter models they can reach operating mode faster, but classic linear units require a longer time to stabilize the pressure in the freon circuit.
Ignoring the rules for initial start-up can lead to the rapid failure of an expensive node. If you have just brought the device from the store, you need to wait a certain time before turning it on, especially if transport was carried out at low temperatures or in a horizontal position. Patience in the first hours operation will pay off with years of uninterrupted service.
Physics of the process: what happens inside during start
When electric current is supplied to the windings of the electric motor, a starting torque occurs, which causes the piston or swing mechanism of the compressor to move. At this moment refrigerant begins to circulate in a closed circuit, passing from liquid to gaseous state and back. The pressure in the system increases sharply, and it is this jump that is stressful for all components.
The oil located in the compressor crankcase must have time to lubricate the rubbing parts before they begin to work under full load. If the equipment was transported lying down, oil may have flowed into the cooling circuit, and it takes time for it to drain back. Hydraulic hammer - this is a real danger when liquid oil enters a cylinder that is intended only to compress gas.
⚠️ Attention: Trying to start the compressor immediately after horizontal transportation without settling can lead to jamming of the piston group in the first minutes of operation.
The first cycle of operation differs from the subsequent ones in that the system has not yet reached nominal temperature mode. Sensors detect heat inside the chambers, forcing the motor to work continuously until the specified parameters are reached. Only after this does the automation come into effect, turning off the unit or reducing the speed.
Transportation factor: why settling time is important
The duration of downtime before the first turn on directly depends on how exactly the device was delivered to the installation site. If the refrigerator was transported while standing, then 2-3 hours are enough for acclimatization. However, when transported on its side or at an angle of more than 40 degrees, the waiting time increases to 8-12 hours, and in winter - up to a day.
Winter transportation in an unheated car body creates additional risks. Condensationformed on internal elements during a sharp temperature change can cause a short circuit in the electrical circuit. Also, in the cold, compressor oil thickens, losing its lubricating properties.
- 🚚 Vertical transportation: 2-4 hours of rest before switching on are sufficient.
- 🛌 Horizontal transportation: a minimum of 8-12 hours is required vertical position.
- ❄️ Winter delivery: be sure to keep the device warm for 4-5 hours before unpacking.
Modern models Samsung or LG often equipped with more compact compressors, but the physics of liquids is the same for all. The oil should completely drain into the crankcase. If you start the unit ahead of time, you risk sending the oil emulsion into the condenser, where it will create a plug and drastically reduce the efficiency of heat transfer.
What will happen if the oil is not allowed to drain?
Oil will enter the cooling circuit and create an oil plug in the capillary tube. The compressor will work non-stop, trying to push through the system, which will lead to overheating and combustion of the windings or mechanical destruction of the valves.
First working cycle: duration and stages
After you have waited for the settling time and turned on the device, the first working cycle begins. Its duration can vary from 2 to 12 hours depending on the volume of the chambers and the ambient temperature in the room. It is considered normal if compressor works without stopping until it cools the entire internal volume to the set temperature.
During this period, it is not recommended to open the doors frequently, as this disrupts the formation of the correct temperature gradient. The system should gain cold not only in the air, but also in the walls of chambers, shelves and drawers. Only after the internal elements have completely frozen, the automation will give a command to stop or switch to the economy mode.
| Compressor type | First cycle time | Behavioural features |
|---|---|---|
| Normal (On/Off) | 3 - 6 hours | Works all the way, then a long rest |
| Inverter | 6 - 12 hours | First powerful work, then reducing speed |
| Linear | 4 - 8 hours | Smooth power gain, quiet operation |
It is important to understand that during the first cycle the refrigerator may operate louder than usual. This is due to the fact that refrigerant pressure has not yet stabilized, and the system requires more effort to overcome the resistance in the tubes. If after 12 hours of continuous operation the device does not turn off and does not reduce speed, this is a cause for concern.
Criteria for normal operation of a new unit
How to determine that the equipment is functioning correctly? First of all, pay attention to the uniformity of cooling. Condenser (the grill at the back or the side walls) should heat up evenly over the entire area. If one part is hot and the other is cold, there may be an air lock in the system or a problem with freon.
The background sound is also an indicator. Quiet gurgling sounds are acceptable - this moves refrigerant through the tubes. However, grinding, clanging, or loud knocking sounds indicate mechanical problems. Modern models Bosch or Whirlpool are equipped with noise reduction systems, so any sharp sounds should alert you.
- 🌡️ Temperature mode: after 4-5 hours the inside should become noticeably colder.
- 🔇 Sound background: even humming without knocking or whistling.
- 💡 Indication: the display (if any) should show a decrease in temperature.
Another important criterion is the ability to maintain temperature. After the refrigerator has turned off for the first time, it should not turn on too often. Cycle frequency depends on the thermal insulation and the tightness of the seals. If the unit turns on every 5-10 minutes, it means that it has not gained cold or there is a leak.
⚠️ Attention: If in the first day of operation you smell burning plastic or see sparking in the area of the thermostat, immediately disconnect the device from the network. This may indicate a manufacturing defect in the electrical system.
When you can load products: safety rules
The most common mistake is loading products immediately after turning on. This is strictly forbidden. The chambers must cool completely so that the food does not begin to deteriorate and the load on the compressor does not increase to a critical level. Heat products will force the motor to wear out, trying to compensate for the heat introduced.
The optimal time for the first load is after the second or third on-off cycle. By this point, the walls of the chambers, shelves and drawers have already frozen and become cold accumulators. Glass and plastic have their own heat capacity, and until they cool down, the air temperature will fluctuate.
☑️ Ready for loading
It is better to load products in small portions. You should not immediately fill an empty, but already cold refrigerator with kilograms of meat or bottles of warm milk. A sharp jump in temperature inside the chamber will force the system to react urgently, which is undesirable for new equipment. Let it get into the rhythm gradually.
Typical mistakes when starting up for the first time
Many users make mistakes that shorten the life of the equipment. One of them is installing the refrigerator close to the wall. Ventilation is necessary to remove heat from the condenser. If the gap is less than 5-7 cm, operating efficiency drops and the compressor overheats.
Another mistake is ignoring the floor level. If the refrigerator is positioned crookedly, the doors may not close tightly, or the oil in the compressor will be unevenly distributed. Use a building level and adjustable supports. Vibration during work also indicates incorrect installation.
- 🚫 Ignoring instructions: different brands may have their own nuances.
- 🧊 Loading warm products: kills the resource compressor on the first day.
- 🔌 Use of extension cords: it is better to do the first start directly into the outlet.
Also, do not set the minimum temperature right away. Start with average values, let the system stabilize. Thermoregulator should calibrate. Rapid cooling of an empty chamber can lead to freezing of the dampers or deformation of the plastic elements.
Is it possible to turn on the refrigerator immediately after delivery in winter?
No, absolutely not. The device should stand in a warm room, unpacked, for at least 4-5 hours to warm up to room temperature and evaporate the condensation. Turning on a cold unit will damage the electronics and cause the oil to solidify.
How long does it take the refrigerator to reach temperature for the first time?
Usually the primary cooling process takes from 4 to 8 hours. Inverter models can cope faster, but it takes time for the walls and shelves to completely freeze. The exact time depends on the volume of the chambers and the temperature in the room.
What to do if the refrigerator does not turn off after the first turn on?
If the device operates for more than 12 hours without stopping, check that the door is tightly closed and the presence of warm food inside. If the chamber is empty and the door is closed hermetically, and the motor continues to hum, there may be a freon leak or a thermostat malfunction. You need to call a technician.
Do you need to wash the refrigerator before turning it on for the first time?
Yes, definitely. Factory dust, packaging residues, or a plastic smell may remain inside. Wipe the chambers with a soft cloth with a solution of baking soda or a special product, then wipe dry and let dry before turning on.