First start of refrigeration equipment after delivery or long-term downtime - this is a critical stage on which the service life of the compressor and the quality of product cooling directly depend. Many owners make the mistake of plugging the equipment into the network immediately after unpacking, which can lead to serious damage in the first hours of operation. Sitra refrigerator, like any other modern equipment, requires compliance with certain time intervals and sequences of actions for the correct start of all systems.
It is important to understand that when transporting the unit tilted, and compressor oil could flow into the cooling system circuit. If you start the engine at this moment, it will work at its limit, trying to push the oil plug, which often ends with water hammer or a wedge of the piston group. Instructions for the Sitra refrigerator implies a period of rest necessary for the oil to drain back into the compressor crankcase. Only after this is it possible to safely supply electricity.
In this article we will analyze in detail the algorithm of actions that will allow you to avoid expensive repairs. You will learn how long to wait, how to check the integrity of the system, and what parameters to set on the control panel for optimal operation. Compliance with these simple rules will ensure that your new unit will serve the period stated by the manufacturer without failures.
Standing time before turning on for the first time
The main question that arises among users is how long the refrigerator should wait before turning on. This time depends on how exactly the transportation was carried out and what the ambient temperature was at the time of delivery. If the unit was transported in a vertical position and not tilted more than 40 degrees, then acclimatization in the room is sufficient. During this time, the internal electronics and plastic elements adapt to room temperature. two hours acclimatization indoors. During this time, the internal electronics and plastic elements adapt to room temperature.
The situation changes if the Sitra refrigerator was transported lying down or at a strong angle. In this case, the oil is guaranteed to get into the evaporator and condenser tubes. It takes significantly longer for it to completely drain back into the compressor. Experts recommend keeping such models in a vertical position for at least 6-8 hours, and in winter it is better to increase this period to 12 hours.
⚠️ Attention: An attempt to turn on the unit earlier than the recommended time can lead to instant failure of the compressor. The manufacturer's warranty in such cases is often void, since violation of the conditions of transportation and launch is obvious.
It is also worth taking into account the temperature difference. If the refrigerator was delivered in winter in an unheated truck, it should absolutely not be turned on right away. Sudden temperature changes can cause condensation to form on electrical contacts, resulting in a short circuit. Allow the equipment to warm up to room temperature naturally, without using heaters to speed up the process.
Visual inspection and preparation for start-up
Before inserting the plug into the socket, it is necessary to conduct a thorough inspection of the device. During delivery, shipping elements or the structure itself may have been damaged. Carefully examine the case for dents, chips or deep scratches. Pay special attention to the rear condenser grill - if it is deformed, this may indicate an impact that damaged the refrigerant tubes.
The next step is to remove all shipping materials. Factory packaging includes not only cardboard and film, but also special fixing elements inside the cameras. Check shelves, crisper drawers and door bins. Often there remain foam blocks or tape holding the moving parts. If you forget to remove them, they can interfere with air circulation or the operation of fans.
Be sure to check the integrity of the rubber seals on the doors. They should fit snugly around the entire perimeter. If you notice creases or a loose fit, try heating the problem area with a hairdryer on the lowest setting or simply straighten it with your hands. A loose door will lead to constant operation of the compressor and the formation of ice.
For ease of checking, we have compiled a list of basic preparation steps:
- 📦 Remove all outer cardboard, tape and plastic film from the case.
- 🧊 Remove all internal packaging from the freezer and refrigerator cameras.
- 🚪 Check the smooth movement of the doors and the operation of the magnetic latches.
- 💡 Inspect the internal lighting lamp for glass integrity.
The procedure for connecting to the electrical network
Connecting the Sitra refrigerator to the network requires compliance with electrical safety rules. Make sure that the outlet to which you plan to connect the equipment is working and grounded. The use of extension cords or tees is not recommended as they can become a source of heat and fire when running a powerful compressor for long periods of time. It is best if the socket is located directly behind the refrigerator or on the side, but with free access.
The plug should fit into the socket tightly, without play. If you feel that the contact is weak or the plug becomes hot during operation, you need to replace the socket. Modern models of refrigerators are equipped with a system of protection against voltage surges, but stable power supply is the key to a long life of electronics. Sitra models with the No Frost system are especially sensitive to voltage quality, as they have additional fans and defrost heaters.
☑️ Initial startup
After connecting to the network, do not rush to download products. Indicators on the control panel may light up to indicate that work has begun. In some models, a sound signal may sound warning of an increase in the temperature inside the chambers - this is normal for the first start, when it is still warm inside.
Setting temperature modes
After the refrigerator has started working, you need to set the correct temperature parameters. Factory settings are usually average, but it is better to check them for the first launch and saving of products. For the refrigerator compartment, the optimal value is considered to be from +2 to +5 degrees Celsius. Lower temperatures will lead to excessive energy consumption, and higher temperatures will lead to food spoilage.
The freezer requires a setting of -18 degrees or lower. This is the standard temperature for long-term storage of meat, fish and semi-finished products. If you are planning a fast freezing mode (Super Freeze), it can be activated in advance, but do not forget to switch back to the standard mode later so as not to overload the system.
The settings in Sitra refrigerators can be controlled by a mechanical regulator or an electronic panel. On mechanical models, turning the knob higher usually means a lower temperature. Electronic models use a digital display, where everything is intuitive. Below is a table of recommended settings for different types of storage:
| Product type | Recommended temperature | Shelf life (approximate) | Location in chamber |
|---|---|---|---|
| Fresh meat | 0...+2 °C | 1-3 days | Lower shelf / Freshness zone |
| Dairy products | +2...+4 °C | 3-7 days | Middle shelves |
| Vegetables and fruit | +4...+6 °C | 1-2 weeks | Bottom drawers |
| Frozen semi-finished products | -18 °C and below | up to 12 months | Freezer |
Do not set the minimum possible values immediately after turning on. Allow the unit to cool down gradually. A sudden change in settings can disrupt the operating algorithms of the electronics, and the system will need time to recalibrate.
What is a freshness zone?
The freshness zone (zero chamber) is a special compartment where the temperature is maintained around 0°C and humidity is minimal. In such conditions, bacteria multiply more slowly, which allows you to store meat, fish and herbs longer without freezing.
Initial loading with food
One of the most common mistakes is filling an empty refrigerator with a large amount of food at room temperature. Thermal load in this case is too large. The compressor will work hard, trying to cool the entire volume, which can lead to overheating and shutdown due to thermal protection. Load food gradually, in small portions.
First, let the refrigerator run idle for at least 2-4 hours until it reaches the set temperature parameters. Check this with a thermometer or indicators on the panel. Only after the mode has stabilized can bookmarking begin. Place food so that it does not block the ventilation openings, especially in models with the No Frost system. The circulation of cold air must be free.
Do not place hot or warm food inside. This will not only disrupt the temperature regime, but will also increase humidity, which will lead to the active formation of ice on the walls and products. Everything that you place inside must be cooled to room temperature.
⚠️ Attention: Never load the refrigerator to capacity with food on the first day of operation. Leave approximately 20-30% of free space for normal air circulation.
Diagnostics of operation after switching on
After the Sitra refrigerator starts up and starts operating, you need to listen carefully to its sounds. A smooth hum of the compressor, periodic crackling (expansion of plastic) and the noise of flowing liquid (refrigerant) in the tubes are considered normal. On No Frost models you will also hear the sound of the fan running. However, these sounds should not be loud, intermittent or accompanied by knocking.
If you hear a loud clanging, metallic grinding or whistling sound, this is a reason to immediately unplug the device. Such sounds may indicate a compressor malfunction or a foreign object entering the fan. Also pay attention to vibration - the refrigerator must be stable. If it shakes, adjust the height of the front legs using a wrench or screwdriver to level the body.
Check the doors for tightness after 30-40 minutes of operation. The door should stick and open with little effort. If the door opens too easily, it means that the seal has not yet seated tightly, or the temperature inside has not yet dropped enough to create a pressure difference.
Frequent errors when starting up for the first time
Even carefully reading the instructions does not always save you from mistakes that users make in a hurry. One of the most common is ignoring the installation level. If the refrigerator is placed on an uneven floor, the door may not close on its own, which will lead to continuous operation of the motor and freezing. Always use a building level or just a glass of water to check the horizontal installation.
Another mistake is installing the refrigerator close to the wall or in a niche without gaps. To effectively dissipate heat, the back wall and sides require free air flow. The minimum distance from the rear grille to the wall should be at least 5-7 cm, and at least a few centimeters on the sides. Violation of this rule leads to overheating of the capacitor.
Also, users often forget to remove the shipping bolts (if a particular model has them, although they are rare in refrigerators, more often in washing machines) or boxes secured with tape. Check the mobility of all internal elements.
What to do if the refrigerator is humming louder than usual?
An increased hum during the first hours of operation may be normal, as the system is entering operating mode. However, if the humming does not subside after a day, check whether the refrigerator is level, whether it is touching the wall, and whether the shelves are vibrating. If everything is in order, but the sound is metallic or intermittent, call a technician.
Is it possible to connect the refrigerator to the network via an extension cord?
Manufacturers categorically do not recommend using extension cords, especially cheap or old ones. When starting, the compressor consumes a current several times higher than the rated current. A weak extension cord may melt or cause a fire. If the outlet is far away, it is better to move it or use a high-quality surge protector with grounding, designed for powerful appliances.
How long will it take for the refrigerator to start freezing?
The first signs of cooling in the refrigerator compartment appear 30-60 minutes after switching on. Fully reaching the set temperature (-18°C in the freezer and +4°C in the refrigerator) takes from 4 to 12 hours, depending on the model, volume and room temperature. Until this time, do not open the doors often.
Do you need to wash the refrigerator before turning it on for the first time?
Yes, definitely. Factory dust and the smell of plastic or packaging may remain inside a new refrigerator. Wipe down all interior surfaces, shelves, and drawers with warm water and a mild detergent or baking soda solution. Rinse thoroughly and wipe dry before turning on.
Proper start-up is not just a formality, but a necessity for modern complex equipment. By following these recommendations, you will ensure long and efficient operation of your Sitra refrigerator. Remember that prevention is always cheaper and easier than repair.