Two-door refrigerators Ariad are deservedly popular in the commercial sector due to their reliability and ability to maintain a stable climate. Correct temperature setting is a key factor in ensuring food safety and economical operation of equipment. Errors during initial adjustment can lead to damage to the goods or increased energy consumption.
Owners of retail outlets and warehouses need to clearly understand the difference between the operating modes of the compressor and the actual temperature inside the chambers. Thermoregulator in these models it is often represented by a mechanical device that requires precise calibration. Ignoring basic operating rules can cause expensive equipment to fail.
This article is an expert guide that will help you independently set up the optimal microclimate. We will look at the operating features of mechanical controllers, methods for checking leaks and methods for diagnosing faults. Compliance with the manufacturer's recommendations will extend the life of your refrigerator.
The principle of operation of the Ariada cooling system
Refrigeration equipment Ariada of the two-door type is most often equipped with a static cooling system or a forced circulation system (No Frost). It is based on a compressor that forces refrigerant into the evaporator, where heat is absorbed from the internal chamber. This process is controlled through thermostat, which opens the electrical circuit when the specified parameters are reached.
It is important to understand that the air temperature inside the cabinet and the temperature of the products are different indicators. After loading a new batch of goods, there is a sharp jump in heat, and the system takes time to stabilize. Heat transfer In two-door models, it can be disrupted if the doors are opened too often or do not fit tightly.
⚠️ Attention: Do not set the lowest possible temperature immediately after switching on empty refrigerator. This can lead to freezing of the evaporator and overload of the compressor.
Cooling efficiency directly depends on the correct circulation of air masses. In models with Dynamic Cooling fans distribute cold air evenly, eliminating the formation of “warm zones”. However, even in such systems, periodic checks of fan operation and cleanliness of air ducts are required.
Location and types of temperature controllers
In most models Ariad the temperature controller is located inside the refrigerator compartment, usually in the upper right corner or above the doorway. Mechanical thermostats have a rotary knob with a digital scale, where the numbers indicate cooling power rather than degrees. The higher the number, the more intense the compressor works.
There are also models with electronic control, where the settings are displayed on a digital display. In such cases, adjustment occurs in steps of 0.1 or 0.5 degrees, which ensures high accuracy. Electronic controllers often have a built-in diagnostic system that signals problems with error codes.
To access the settings, some modifications may require removing the decorative cover. Be careful when removing plastic elements, as at low temperatures the plastic becomes brittle. Mechanical damage The regulator may lead to incorrect temperature readings.
What do the numbers on a mechanical thermostat mean?
Numbers from 1 to 7 (or 1 to 9) on the thermostat knob do not correspond to degrees Celsius. The number 1 means minimum cooling (the compressor rarely runs), and the maximum number means maximum cooling (the compressor runs almost non-stop). Position "0" or "Off" completely turns off cooling.
Step-by-step instructions for setting the temperature
The setting process should begin only after the refrigerator has been idle for at least 6-8 hours. This will allow the system to return to normal operation and stabilize the temperature background. Abrupt changes in settings during the first hours of operation are unacceptable.
Rotate the thermostat knob smoothly, without sudden jerks or excessive force. The mechanism inside is sensitive to overload, and a broken thread will require replacement of the entire assembly. The optimal starting value for most products is the middle position of the scale.
☑️ Temperature setting algorithm
After each adjustment of the position of the regulator, it is necessary to pause for 2-3 hours before taking readings. The inertia of the system is great, and the instant result does not reflect the real state. Only consistent actions will allow you to find balance between energy consumption and cooling quality.
Optimal temperature conditions for different products
Different groups of goods require different storage conditions. Meat and fish need lower temperatures, close to 0...+2°C, while vegetables and fruits can spoil if overcooled. The universal setting of +4...+6°C is suitable for mixed storage, but is not ideal for all categories.
When storing frozen food in two-door models Ariada (if one of the chambers is a freezer), it is important to ensure that there is no ice on the products. The presence of snow or ice on the packaging indicates a violation of the temperature regime or tightness. Defrostation It may begin unnoticed by the eye, but will lead to loss of presentation.
| Product type | Recommended temperature | Shelf life (approximate) | Placement features |
|---|---|---|---|
| Fresh meat | 0°C... +2°C | 2-3 days | Bottom shelf, closed capacity |
| Dairy products | +2°C... +6°C | 3-5 days | Middle shelves, away from the door |
| Vegetables and fruits | +6°C... +10°C | 5-10 days | Bottom drawer (freshness zone) |
| Ready cooking | +2°C... +4°C | 1-2 days | Upper shelves, closed containers |
Do not overload the shelves, leave space for air circulation between products. Dense laying blocks the flow of cold air, creating zones with elevated temperatures. Air exchange is critical for uniform cooling of the entire volume of the chamber.
Diagnostics of problems with temperature conditions
If after setting the temperature in camera does not correspond to the set values, it is necessary to carry out diagnostics. The first sign of a malfunction may be the continuous operation of the compressor without shutdowns. This indicates that the system cannot reach the specified threshold or is transmitting incorrect signals. Thermal sensor The reverse situation, when the refrigerator does not turn on at all or operates in too short cycles, is also dangerous. In the first case, the food may defrost, in the second, the chamber will be too warm. Check the tightness of the door seals, as the intake of warm air from the outside will throw off the settings. temperature sensor transmits incorrect signals.
The opposite situation, when the refrigerator does not turn on at all or operates in too short cycles, is also dangerous. In the first case, the food may defrost, in the second, the chamber will be too warm. Check the tightness of the door seals, as the intake of warm air from the outside will confuse the settings.
⚠️ Attention: If you hear the thermostat clicking, but the compressor does not start, the start relay or the compressor itself may be faulty. Do not attempt to repair the electrical part without unplugging it.
For accurate diagnosis, use a multimeter to check the thermostat contacts. In a cold state, the contacts should be closed, and when heated (if the sensor is removed), they should open. The malfunction of this element is one of the most common causes of violation temperature conditions.
Care of equipment for stable work
Regular maintenance allows you to avoid many problems with setting the temperature. Once a quarter it is necessary to completely defrost and wash the internal surfaces. Ice accumulation on the evaporator acts as a heat insulator, preventing effective heat transfer.
Particular attention should be paid to the cleanliness of the condenser, which is usually located on the back wall or at the bottom of the unit. Dust and fluff clogging the grille drastically reduce efficiency (heat transfer), causing the compressor to work with overload. Ventilation must be free on all sides.
Check the condition of the rubber seals on the doors. Dirt and grease can compromise the seal, allowing warm air to enter. Wipe the seals with a soft cloth and a neutral detergent, avoiding the use of aggressive chemicals that can destroy the rubber.
How often do you need to defrost the Ariada refrigerator?
Models with manual defrosting require disconnecting from the network when an ice crust of 3-5 mm thick forms. This usually happens once every 3-6 months depending on the humidity in the room and how often the doors are opened. Models with the No Frost system do not require manual defrosting, but preventative cleaning is recommended twice a year.
Why does the refrigerator hum after setting the temperature?
An increased hum may be associated with vibration of the body if the refrigerator is not level. Adjust the support legs. The noise may also come from the refrigerant circulating through the pipes, which is a normal physical process. If the sound becomes harsh or metallic, contact the service.
Is it possible to use the Ariada refrigerator at subzero temperatures?
Most commercial refrigerators Ariada are designed to operate in the SN-T climate class (from +10°C to +32°C or +43°C). Operation in an unheated room in winter can lead to the oil in the compressor solidifying and the thermostat not functioning correctly. Before turning on in a cold room, allow the unit to warm up to room temperature.
What to do if the chamber is too cold even at minimum?
If the thermostat knob is set to the minimum value (1) and the food freezes, there is a possibility of a malfunction of the thermostat itself (sticking contacts) or loss of tightness of the sensor bellows. In this case, it is necessary to replace the thermostat with a new one, similar in characteristics.
Does the fullness of the chamber affect the setting?
Yes, an empty refrigerator cools faster, but it also heats up instantly when the door is opened. A full chamber holds cold better (heat capacity of food), but requires more time for initial cooling. It is best to adjust the temperature at an average load, typical for your operating mode.