Operation of Soviet and post-Soviet equipment, such as Biryusa, requires a special approach, especially when it comes to planned maintenance. Owners of these units are often faced with the need for manual defrosting, since the No Frost system was not available as a class in models of the last century. Incorrect actions when removing ice crust can lead to damage to the evaporator or failure of the thermostat, which will turn simple cleaning into expensive repairs.
The process of defrosting an old refrigerator is significantly different from caring for modern models. It is critical to understand the physical structure of the ice and how it interacts with the metal elements of the chamber. Ignoring basic safety rules or trying to speed up the process with mechanical force often ends in death for the compressor or sealed circuit. Below we will look at all the nuances that will help keep your equipment in working condition.
Preparing for the defrosting procedure
The first step is to completely disconnect the device from the power supply. Do not rely solely on turning the control to the “Off” position; you must unplug the cord from the outlet. This ensures that compressor does not start accidentally during work while the system is in an unstable state. Old models often have worn out wiring, so a visual inspection of the cable before starting manipulations will not be superfluous.
Next, you should empty the refrigerator and freezer compartments of all products. If it's winter outside, you can take perishable foods to the balcony, but make sure that the temperature is not extremely low for some types of vegetables. All removable shelves, drawers and trays must be removed. It is better to immediately wash them with warm water and a mild detergent so that they do not interfere with access to the walls of the chamber.
⚠️ Attention: It is strictly forbidden to leave the refrigerator on during the defrosting process. Operating the compressor with the door open and melting ice will cause it to overheat and possibly jam.
Prepare a place to collect water. In older models Turk the melt water drainage system is often represented by a simple groove leading to a tray above the engine compartment, or is completely absent, requiring the use of rags. Cover the floor around the unit with absorbent materials or prepare several deep basins. You will also need soft rags, sponges and possibly a plastic spatula.
☑️ Preparing for defrosting
Natural defrosting: the safest method
The most gentle method for equipment is the natural melting of ice. This process takes the most time - from 8 to 24 hours depending on the thickness of the fur coat and the room temperature, but it guarantees the safety of the evaporator. The ice begins to melt on its own, and all you have to do is control the process by removing the flowing water. This is the best option for models that are many years old.
During the natural defrosting process, it is important to ensure the flow of warm air inside the chamber. Leave the doors wide open. You can open indoor windows if the outside temperature allows, but avoid drafts that could bring dust inside the wet unit. Periodically check the water collection pan located above the compressor and empty it promptly to prevent water from overflowing onto the floor or electrical parts.
Some users try to use a hair dryer to speed up the process by directing the flow of warm air inside. Although this seems logical, it is risky for older refrigerators. A sudden change in temperature can cause deformation of the plastic or damage the rubber door seals. In addition, hot air can unevenly heat the evaporator, which will create excess tension in the system. Biryusa it's risky. A sudden change in temperature can cause deformation of the plastic or damage the rubber door seals. In addition, hot air can heat the evaporator unevenly, which will create unnecessary stress in the system.
Accelerated methods and their risks
If time is running out, owners often look for ways to speed up thawing. One method is to install hot water containers inside the chambers. It is important to use containers (bowls, pots) and not pour water directly onto shelves or walls. Be sure to place a wooden board or thick towel under bowls of boiling water to avoid damaging the plastic or enamel of the bottom of the chamber from direct contact with hot metal.
Another method is to use a fan. By directing the flow of room air inside the open chamber, you can significantly reduce the defrosting time. This is safer than a hairdryer, since the air temperature does not exceed room temperature, but the circulation speeds up heat transfer. However, make sure that the fan does not splash with water, and follow safety precautions when operating electrical appliances near moisture.
⚠️ Attention: Never use sharp objects (knives, screwdrivers, ice picks) to chip ice. A breakdown of the evaporator tube will lead to a leak of freon, the repair of which in older models is often not economically feasible.
There is a myth that you can use special defrosting sprays. In the case of technology Biryusa last century, their use is not recommended. The chemical composition of such products can react with old seal materials or interior paint, causing corrosion or deterioration of the rubber. It is better to rely on proven physical methods.
Why can’t you heat with a hairdryer?
Using a hairdryer creates local overheating zones. Plastic ages and becomes brittle, and sudden heat can cause it to crack. In addition, condensation from warm air settles deeper on cold parts, which can lead to oxidation of contacts.
Removing ice crust and cleaning
When the main body of ice begins to peel off, you can carefully help the process. If the pieces of ice are large, you can press them lightly with a gloved hand, but without jerking. To remove ice residue, use a special plastic scraper or a regular plastic spatula. Metal tools are strictly prohibited, since the thickness of the evaporator wall in old refrigerators is minimal.
After all the ice has melted, it is necessary to thoroughly wash the inner chamber. Use a baking soda solution or mild soap. Thoroughly wash all corners, drainage channels and door seals. In older models Biryusa mold and dirt often accumulate in the folds of the seal, which must be removed with a soft brush or rag.
Pay special attention to the water drainage channel. In older units, it often becomes clogged with crumbs and mucus. Clean it with a soft wire or brush, rinse with warm water. Make sure water flows freely into the evaporation tank above the motor. If the channel is clogged tightly, it must be carefully cleaned so that during the next defrosting the water does not overflow.
| Method | Time | Safety | Recommendation |
|---|---|---|---|
| Natural | 12-24 hours | High | Recommended |
| Hot water | 2-4 hours | Medium | With caution |
| Hair dryer | 30-60 min | Low | Not recommended |
| Mechanical | 10-20 min | Critical | Prohibited |
Drying and starting the refrigerator
After washing, it is important to wipe everything dry surfaces. Residual moisture can turn into ice during the first start, creating a new “coat” faster than usual. Wipe walls, shelves and drawers with a dry cloth. Leave the doors open for another 15-20 minutes so that any remaining moisture evaporates and the temperature inside becomes equal to room temperature.
Before turning on, check the integrity of the power cord and the condition of the plug. In older models Biryusa the wiring could have dried out over years of use. If everything is in order, put the shelves and drawers back in place. Move the temperature control to the middle position (usually number 2 or 3). You should not immediately set the maximum cold, this will put extra load on the compressor.
Loading of products should be done gradually. Do not fill the chamber with warm food immediately after defrosting. Allow the unit to reach temperature, then place the food, leaving gaps for air circulation. This is especially important for older models, where the air circulation system is less efficient than in modern analogues.
Typical errors when defrosting
One of the most common mistakes is ignoring the regularity of defrosting. Owners of old ones Biryus often wait until the ice turns into a monolithic block. This increases the defrost time and the load on the compressor, which has to work harder to break through the ice layer. It is optimal to carry out the procedure when the thickness of the ice reaches 5-7 mm.
Another mistake is turning on the refrigerator immediately after the last piece of ice has fallen to the floor. As mentioned above, the unit must be completely dry. Moisture that gets on the electrical contacts of a thermostat or light bulb can cause a short circuit when voltage is applied.
⚠️ Attention: Do not use aggressive chemicals, abrasive powders or solvents to clean the internal chambers. They can damage the coating and plastic, and also leave an odor that is absorbed into the food.
It is also a mistake to leave the light in the chamber on for a long time during defrosting (if the door is open and the refrigerator is left plugged in for some reason or the lamp is lit from a separate battery when checking). The incandescent lamp gets hot and can melt nearby plastic. Always monitor heat sources.
Frequently asked questions and answers
How often do you need to defrost the Biryusa refrigerator?
The recommended frequency is once every 4-6 months, or when the thickness of the ice on the walls reaches 5-7 mm. More frequent defrosting is not required, but you shouldn’t delay it until a thick crust forms.
Is it possible to defrost a refrigerator without unplugging it?
No, this is strictly prohibited. The compressor should not operate while the doors are open and ice is actively melting. This will lead to its breakdown.
What to do if the refrigerator does not turn on after defrosting?
Check whether the unit is completely dry. Moisture may have gotten into the contacts. Wait a few more hours. If the problem persists, the thermostat or start relay may have failed.
Do you need to wash the inside of the refrigerator after defrosting?
Yes, definitely. Bacteria and odors are washed away with water. Use mild detergents and rinse the surfaces thoroughly with clean water.
Why does ice quickly freeze in the Biryusa refrigerator?
The reasons may be different: a door that is not tightly closed, a damaged seal, frequent opening of the door, or placing hot food inside. This may also indicate a malfunction of the thermostat.