Correct setting of the temperature regime in refrigeration equipment Polair is a critical condition for ensuring a long shelf life of products. Not only the preservation of taste, but also the safety of food directly depends on the accuracy of the set parameters, since bacteria actively multiply in too warm an environment. Owners of both commercial display cases and household models are often faced with the need to adjust factory settings depending on the camera load and environmental conditions.
Modern climate control systems in equipment of this brand may differ depending on the year of manufacture and the type of controller. Some models are equipped with digital displays with degree accuracy, while others use mechanical thermostats or simple electronic display units. Understanding the operating principle of your specific device will help you avoid mistakes that can lead to damage to the goods or increased energy consumption.
In this material we will analyze in detail the algorithms of action for various equipment modifications. You'll learn where to look for controls, how to interpret indicator readings, and what to do if the actual temperature inside the chamber does not match the set values. Proper setting will optimize the operation of the compressor and extend the service life of the unit.
Features of the Polair temperature control system
Brand refrigeration equipment Polair is equipped with various types of controllers, which directly affects the setting method. The most common are electronic control units of the EVPO or Evcoseries, which allow you to set precise digital values. In older or budget lines, there may be mechanical thermostats, where adjustment is made by turning the handle without displaying the exact temperature.
Electronic controllers operate based on the readings of sensors located inside the evaporator and in the working chamber. The system automatically turns the compressor on and off, maintaining the set range. It is important to understand that the number on the display is not always the actual air temperature right now, but rather the target value or the current state of the sensor at a specific measurement point.
Commercial models typically have a protection function against frequent switching on. If you have just changed the settings, the compressor may not start immediately. This is normal electronic behavior designed to prevent engine wear. The user should be patient and not try to reboot the device unnecessarily.
It is worth noting that the accuracy of the display depends on the calibration of the sensors. Over time or due to mechanical damage, readings may shift. In a professional environment, it is common to use an independent thermometer to verify data, especially when storing sensitive products such as meat or dairy products.
Location of controls and indications
Locating the control panel is the first step to successful setup. In most refrigerator models Polair the display or control is located on the outside of the case, often at the top or side. This is done for ease of access without having to open the door, which is especially important for keeping the point of sale cold.
If you do not find buttons or a screen on the front panel, check the inside of the camera. In some industrial cabinets, the control unit may be hidden behind a decorative plug or located in a technical compartment. Mechanical thermostats are often hidden inside, at the back wall or under a shelf, to prevent customers from accidentally changing the settings.
Indication of the device status is carried out through LEDs or digital segments. A green light usually indicates normal operation, while a flashing red light may indicate an anomaly or an open door. Understanding the color scheme helps you quickly diagnose the problem without deeply analyzing the codes.
⚠️ Attention: If the control panel is located inside the camera, avoid holding the door open for long periods of time during setup. This will heat up the interior and cause the compressor to work overload until it recovers.
For models with touch buttons, it is important to ensure that your hands are dry when touching. Humidity can cause false alarms or make it difficult to enter commands. In conditions of high humidity, characteristic of some industrial premises, it is recommended to periodically wipe the panel with a soft, dry cloth.
Instructions for setting up electronic controllers
Setting up digital models requires sequential steps. The controller interface Polair is logical, but has its own characteristics. To enter the settings menu, most often you need to long press one of the buttons or a key combination. The standard action is to hold down the gear button or the "Set" symbol for 3-5 seconds.
After entering the programming mode, a parameter that can be changed will begin to flash on the display. Use the Up and Down arrow buttons to set the desired temperature. In some modifications, to confirm the choice, you need to press the setup button again or just wait a few seconds until the system exits the menu automatically.
☑️ Controller setup algorithm
There is a difference between setting the temperature on and off the compressor. Often the user sets only the upper limit, and the difference (delta) is set at the factory. However, you can change this parameter in the advanced menus. For example, set the on at -15°C and off at -18°C, which will create an operating range of 3 degrees.
Sequence of actions for Evco controllers:1. Press and hold the SET button (3 sec).
2. "St" (set point) will appear on the screen.
3. Use the + / - buttons to change the value.
4. Press SET to confirm.
5. To exit, press ESC or wait 10 seconds.
If you accidentally changed unnecessary parameters, do not panic. Most controllers allow you to reset them to factory settings, but this should be done with caution as all individual calibrations will be lost. It is better to simply return the changed values to their original state by checking the device data sheet.
Adjusting mechanical thermostats
In models without an electronic display, adjustment is carried out mechanically. The thermostat is a device with a rotary knob, the scale of which can be graduated in degrees or in conventional units from 1 to 5 (or 1 to 7). In the latter case, the number does not mean a specific temperature, but indicates the intensity of cooling.
The higher the number on the mechanical regulator, the lower the temperature inside the chamber will be. Setting the knob to the "5" or "Max" position will cause the compressor to work almost continuously, trying to achieve the lowest possible values. This can lead to overfreezing of food and the formation of excessive ice on the evaporator.
Fine-tuning the mechanics will require time and patience. After each turn of the knob, you must wait several hours until the temperature stabilizes. Only after this can you take measurements with a regular thermometer and make a decision on further adjustment of the position of the handle.
| Handle position | Operating mode | Expected effect | Recommendation |
|---|---|---|---|
| 1 (Min) | Minimum cooling | Temperature close to ambient | For short-term storage only |
| 2-3 | Medium mode | Optimal for vegetables and fruits | Basic setting for most products |
| 4-5 | Intensive cooling | Low temperatures, risk of freezing | For meat, fish or quick freezing |
| 0 / Off | Off | Compressor does not work | For defrosting or long periods of inactivity |
Mechanical thermostats are sensitive to vibration. If the refrigerator is placed on a vibrating floor or near a source of vibration, the contacts inside the regulator may rattle, causing frequent startup. In such cases, it may be necessary to replace the thermostat with a more stable model or install the equipment on a flat surface.
Optimal temperature conditions for different products
There is no universal temperature for all products. It is a mistake to think that “the colder the better.” Different groups of products require specific storage conditions to preserve texture, taste and beneficial properties. Wrong choice of mode in the refrigerator Polair can lead to rapid spoilage or loss of presentation.
Meat and fish products require the lowest temperatures, close to zero or slightly lower. This suppresses the development of pathogenic microflora. Vegetables and fruits, on the contrary, at too low temperatures can lose their elasticity, darken or begin to rot due to the destruction of cellular structures.
Why can’t everything be stored together?
Different foods emit ethylene and require different humidity. Storing fruits next to vegetables can speed up the spoilage of the latter. In addition, temperature requirements may differ by several degrees, which is critical for long-term storage.
Finished culinary products and dairy products occupy an intermediate position. Temperature stability is critical for them. Sudden surges caused by improper setting of the compressor delta lead to condensation and bacterial growth on the surface of the package.
⚠️ Attention: Do not fill the chamber with warm products. If you have placed a large amount of room temperature items in the refrigerator, temporarily set the setting to a lower setting and return to the standard setting once it has cooled down. Otherwise, the compressor will wear out.
Maintaining the correct temperature conditions is not only a matter of quality, but also a requirement of sanitary standards (SanPiN). Regulatory inspections often involve checking thermometers inside the chamber against a temperature log. Therefore, precise adjustment of the equipment Polair is a prerequisite for running a legal business.
Diagnostics of problems and error codes
If the set temperature is not reached or the device behaves strangely, the controller can report this with an error code. Alphanumeric combinations such as E1, E2, AL or flashing segments appear on the display. Ignoring these signals can lead to breakdown of the compressor or damage to the entire contents.
Code E1 or E2 most often indicates a malfunction of the temperature sensor. This could be an open circuit, short circuit, or sensor failure. In this case, automatic adjustment is impossible, and the device may go into emergency mode or completely turn off cooling.
The signal AL (Alarm) usually warns that the permissible temperature threshold inside the chamber has been exceeded. This occurs if the door has been open for a long time, a lot of warm food has been loaded, or the compressor power is insufficient for the current heat load. If the signal does not disappear after closing the door, check the tightness of the seal.
To reset the error, sometimes it is enough to turn off the device from the network for 10-15 minutes and turn it on again. If the problem was caused by a power surge, the system will reboot and work normally. However, if the error recurs, you will need to replace the faulty element - the sensor, thermostat or the controller itself.
What to do if the Polair refrigerator does not hold the temperature?
If the settings are correct, but the cold does not hold, check: 1) The tightness of the door closure and the condition of the seal. 2) Presence of ice on the evaporator (defrost required). 3) Amount of refrigerant (possible freon leakage). 4) Operation of the blower fan (if the NoFrost model). 5) Condenser contamination at the back of the device.
How often should you check the temperature in a commercial refrigerator?
In accordance with sanitary standards, temperature control in food storage areas should be carried out regularly. For commercial refrigerators Polair it is recommended to take readings at least twice a day (morning and evening) and record them in a log. This will allow you to track the dynamics and notice a malfunction in time.
Is it possible to transport a Polair refrigerator lying down?
Transporting refrigeration equipment in a horizontal position is extremely undesirable. There is a risk of compressor damage and oil leakage into the refrigerant circuit. If transportation lying down is unavoidable, after installing it vertically, you must wait at least 4-6 hours (preferably a day) before turning it on, so that the oil flows back into the crankcase.