The operation of reliable Soviet or early post-Soviet equipment is often faced with the need for re-tuning after a long period of inactivity or transportation. An old refrigerator Biryusa is a unit with a time-tested design, where most processes are controlled mechanically, without complex electronics. Understanding the operating principles of thermostat and the compressor allows you to extend the life of the device for many years.
Unlike modern No Frost systems, classic models require periodic defrosting and careful attention to the temperature regime. Correct calibration equipment directly affects the safety of products and the level of energy consumption. Before starting active operations, you must make sure that the equipment is installed level and has access to a grounded power supply.
Restoring operating parameters is not a complicated process, but it requires consistency. You will need a minimum set of tools and a basic understanding of how refrigerant circulates in the system. Proper setup will eliminate unnecessary noise and prevent damage to inventory.
Initial inspection and preparation for launch
Before connecting the old unit to the network, it is necessary to conduct a thorough visual diagnosis. Inspect the housing for dents that could damage the internal tubes capacitor. Check the integrity of the electrical cord: the insulation should not have cracks, and the plug should have no traces of melting.
Pay special attention seal to the door. Over time, rubber hardens and loses elasticity, which leads to loss of cold. If the door does not seal tightly, the compressor will run continuously, trying to compensate for the temperature leak. Wipe the seal with warm water and soapy water to remove dirt and grease.
⚠️ Attention: If the refrigerator was transported lying down, it is strictly forbidden to plug it in immediately. The oil from the compressor must drain back into the crankcase, this takes from 4 to 24 hours depending on the model and transportation time.
Install the equipment on a flat surface. Use a spirit level or a regular glass of water to check the horizon. Refrigerator feet often have adjustment screws to compensate for uneven floors. This is critical for the correct operation of the door mechanism. self-closing doors.
Temperature control
In older models Biryusa temperature control is carried out by a mechanical thermostat. This is usually a knob with numbers from 1 to 5 or 7 located inside the camera or on the front panel. The numbers do not indicate degrees, but intensity cooling.
For normal operation in summer, it is recommended to set the regulator to position 2 or 3. In winter, when the ambient temperature in the room is lower, correction may be required. If the room is colder than +16°C, the refrigerator may stop turning on, as it will seem to it that it is already cold enough inside.
Do not immediately turn the knob to the maximum. A sharp decrease in temperature creates excess load on compressor and can lead to freezing of food to the evaporator. Smooth adjustment allows the system to reach operating mode without overheating the motor windings.
Setting the operation of the compressor and start relay
The heart of the refrigerator is the motor-compressor. Older models often use asynchronous motors, which are sensitive to voltage fluctuations. If you hear humming, clicking, but the start does not occur, the problem may lie in the start relay.
The protection and start relay is located in the black box on the back wall, directly on the compressor. Replacing it or cleaning the contacts often revives the unit. However, if the compressor operates cyclically (turns on for 2-3 minutes and turns off for 10-15), this is normal operation with a correctly configured thermostat.
| Symptom | Possible cause | Action |
|---|---|---|
| It hums, but does not start | Faulty start relay | Replacing the relay |
| Works without stopping | Freon leak or stuck thermostat | Diagnostics tightness |
| Strong vibration | Incorrect installation or wear of shock absorbers | Level leveling |
| Clicking at start | Electrical problems compressor | Checking the windings |
If the compressor is hot to the touch (more than 90°C) and does not turn off, immediately unplug the device. This may indicate an interturn short circuit or a critical shortage refrigerant. Further operation in this mode will lead to engine combustion.
Checking the defrosting and drainage system
Classic refrigerators Turk are equipped with a drip defrosting system. Water flows down the back wall into a gutter and then through a drainage hole into a container above the compressor, where it evaporates. Clogging of this channel is a common cause of puddles on the floor.
To clean, use a soft wire or a special brush. Carefully insert the instrument into the hole, being careful not to damage the plastic walls of the canal. After mechanical cleaning, rinse the drainage with warm water from a syringe or syringe.
☑️ Cleaning the drainage system
Icing of the evaporator can also be caused by a loose door fit. Check to see if there is anything preventing the door from closing: dishes on the shelves, bulging food packaging, or skewed hinges. The hinges can be tightened with a key, returning the door to the correct position.
Eliminating noise and vibration
Old equipment often makes more noise than new ones. The hum may come from the vibrating tubes capacitor on the rear panel. Carefully inspect the pipelines: if they are in contact with each other or with the housing wall, they must be carefully separated by hand.
Use plastic clamps or pieces of rubber to isolate the metal contact points. This will reduce the transmission of vibration to the housing. Also, the source of noise can be the compressor itself if the fastening bolts on the frame are loose.
What to do if the fan is noisy (in models with blower)?
In models with a fan, noise may occur due to ice freezing on the blades or wear of the bearings. Defrosting within 24 hours or replacing the fan is required.
Sometimes extraneous sounds are produced by a refrigerator standing too close to a wall or furniture. Provide a gap of at least 5-10 cm on all sides for free air circulation. This will improve heat transfer and reduce the load on the unit.
Operation in winter
Using a refrigerator in an unheated room (garage, cottage) in winter has its own characteristics. Standard models Biryusa are designed to operate at ambient temperatures from +10°C to +32°C. At lower values, the oil in the compressor thickens, and the thermostat may not turn on the motor.
If you plan to store equipment in the winter without food, you need to defrost it, wash it, dry it and leave the door ajar. This will prevent mold and odor. Starting up at temperatures below +5°C without modification (installation of a winter kit) is not recommended.
⚠️ Attention: Starting the refrigerator at a temperature below +5°C can lead to disruption of the compressor lubrication and its failure. The technical characteristics of oils do not allow them to work effectively in cold weather.
For winter storage of food in an unheated room, there are special models with climate class SN or ST, or the installation of a thermostat heater is required. Without this, the old refrigerator may simply stop responding to an increase in temperature inside the chamber.
Frequent questions about setting up (FAQ)
Why does the Biryusa refrigerator not turn off after setting up?
Most often this indicates a freon leak, wear on the door seal or a malfunction of the thermostat. Also, the compressor can operate continuously if a large amount of warm products is loaded into the chamber.
What number should be set on the regulator in the summer?
In the hot season, position 2 or 3 is considered optimal. Setting the maximum value (5 or 7) will lead to the formation of a “fur coat” on the evaporator and increased energy consumption.
Is it possible to put an old refrigerator next to the radiator?
Absolutely not. The proximity of heat sources disrupts the heat exchange of the condenser, which causes the compressor to work with overload. The minimum distance to heating radiators is 50 cm.
What does the flashing indicator mean (if any)?
In older models, indicators usually simply signal the presence of voltage. If the “Attention” light or similar is blinking, this may indicate an increase in the temperature in the chamber above normal.
Following these simple rules will allow your old refrigerator Biryusa serve for many more years. Remember that mechanical systems require a little more attention than electronic ones, but they are also more repairable at home.