The process of returning a two-chamber refrigerator Atlant with two compressors to operation after complete defrosting requires compliance with time intervals and the correct sequence of actions. Ignoring time to equalize pressure in the refrigerant system can lead to jamming of the piston group or failure of the start relay. The owner must clearly understand the difference between a simply turned off device and a unit that has been in complete defrost mode.
The erroneous opinion is the belief that turning it on can be done immediately after wiping off the last puddle of water. Safety precautions and the physics of freon work dictate their conditions: It takes time for the oil to drain into the compressor crankcase. If you start the engine instantly, it will run dry, which critically reduces the life of expensive equipment. In this article we will analyze the exact algorithm of actions for models with separate cooling circuits.
It is also worth noting that a two-compressor system Atlant technically represents two independent refrigerators in one housing. This means that the startup procedure affects two separate electrical circuits and two mechanical compression units. The minimum downtime before turning on after complete defrosting is 4 hours, but an interval of 6-8 is considered optimal hours. Compliance with this rule is the key to the long service of your household appliance.
Physical processes in the cooling system during idle time
When the refrigerator Atlant defrosts, the refrigerant (freon) remains in the evaporator and condenser tubes under residual pressure. In the compressor, which is the heart of the system, there is compressor oil. During operation, part of this oil circulates through the system along with the gas, but when stopped, it must completely return to the engine crankcase.
If you turn on the device immediately after defrosting, the oil will not have time to drain down under the influence of gravity. As a result, the piston group will begin to work with insufficient lubrication, which will cause overheating and mechanical friction. In addition, condensation could form in the heat exchanger, which, during a sudden start, could get into the electrical part or cause a water hammer in the gas circulation system.
The two-compressor circuit complicates the process in that you actually have two engines, each of which requires its own time to stabilize. The pressure in the circuits should equalize naturally. An attempt to force this process is a direct path to expensive repairs.
⚠️ Attention: It is strictly forbidden to connect the refrigerator to the network if you just brought it from the store in winter or if it was standing in an unheated room. In this case, the waiting time should be increased to 12-24 hours to warm up the oil and evaporate the condensation inside the electrics.
Step-by-step algorithm for preparing for the first start
Before inserting the plug into the socket, it is necessary to carry out a visual inspection and preparation of the installation site. Make sure the unit is level. To check, use a building level or simply open the door: if it does not close or open sharply, but remains in place, then horizontalness has been maintained.
Check the integrity of the power cable and plug. There should be no traces of melting, cracks or creases on them. The socket to which it will be connected Atlantmust be in good working order and grounded. The use of extension cords or tees is not recommended, as the starting currents of the compressor can be high.
Make sure that the rear radiator grille (condenser) is not pressed against the wall. For normal air circulation, a gap of at least 5-7 centimeters is required. A violation of heat transfer will result in the motor working without interruption, trying to gain temperature.
☑️ Checklist before turning on
Correct sequence of compressors switching on
In two-compressor models Atlant starting can occur simultaneously or with a slight delay, in depending on the specific series and year of manufacture. However, the safest scenario is considered to be one-by-one switching on if you doubt the condition of the electrical wiring in the house.
Modern models are equipped with electronic controls, where all processes are controlled control module. In such refrigerators it is enough to simply supply power. Older mechanical models may require manual adjustment of thermostats. If your model has two separate temperature regulators (usually inside the chambers), make sure that they are not turned to maximum at once.
The following sequence of actions is recommended:
- 🔌 Insert the plug into the socket and listen: you should hear a characteristic relay click and a hum starting motor (usually the freezer starts first).
- ❄️ Wait 10-15 minutes: make sure that the first compressor runs smoothly, without knocking or vibration, and the tubes in the freezer begin to get colder.
- ⚙️ Activate the second circuit: if the model allows separate control, turn on the cooling refrigerator compartment 20-30 minutes after the first start.
If you hear a hum, but the refrigerator does not start, and after a few seconds there is a click and silence, immediately turn off the device. This is a sign of a malfunction of the starting relay or the compressor itself.
Why does it hum, but does not start?
If the compressor hums for 5-10 seconds, then clicks and goes silent, the “soft” start has failed. Possible reasons: low voltage in the network, a jammed piston or a burnt out start relay. Repeated attempts to turn on can finish off the motor.
Setting temperature conditions after defrosting
After a successful start, you are faced with the task of setting up optimal operating parameters. Don't try to freeze large quantities of food at once. An empty refrigerator will reach temperature faster and more evenly. For two-compressor systems Atlant the following recommendations for setting are typical:
In the refrigeration chamber (upper or lower, depending on the model), the optimal temperature is considered to be from +2 to +5 degrees Celsius. In the freezer for long-term storage, a mode of -18 degrees or lower is recommended. The electronic display can show the current temperature, which will decrease gradually.
Table of recommended settings for various storage modes:
| Storage mode | Refrigerator compartment (°C) | Freezer compartment (°C) | Recommended period |
|---|---|---|---|
| Cooling drinks | +4...+5 | -18 | Up to 3 days |
| Fresh meat/fish | 0...+2 | -18 | 1-2 days |
| Long freezing | +4 | -20...-24 | Up to 12 months. |
| Economic mode | +5...+6 | -15...-18 | Standard |
Do not set the controls to maximum cooling (often indicated as MAX or number 7) unless necessary. This will lead to the motor running without stopping and the formation of excessive ice, even in systems No Frost.
⚠️ Attention: Loading with warm products immediately after switching on sharply increases the load on the compressor. Let the refrigerator run idle for 2-3 hours so that it reaches operating mode, and only then fill it with chambers.
Diagnostics of operation in the first hours of operation
The first 3-4 hours of operation are diagnostic. During this period, you must monitor the behavior of the device. It is considered normal if the body of the refrigerator (especially the side walls) becomes slightly hot. This operates an anti-condensation circuit, preventing moisture from forming outside.
Pay attention to the cyclical nature of the work. The compressor must turn on, work for a certain time (for example, 20-40 minutes), then turn off and “rest” for a similar time. If you notice that operating time the rest time is significantly exceeded, or the motor hums continuously for hours, this is a signal of a problem.
Check the tightness of the doors. Take a sheet of paper, clamp it with the door and try to pull it out. If the sheet is pulled out too easily in different places, it means that the sealing rubber does not fit tightly or is deformed. After defrosting, the rubber could “stiffen”; it needs time to straighten out.
Typical startup errors and their consequences
One of the most common mistakes is ignoring the smell. After defrosting and turning on, a slight smell of plastic or technical grease may appear. This is normal for the first hours of work. However, the strong smell of burning wiring requires immediate disconnection from the network.
Often users forget to check whether the taps are open (if the model is equipped with a water supply system) or whether the shelves are installed correctly. Vibration during operation can move loose parts, causing noise. Make sure that all shipping bolts (if they were on the compressor, although Atlantakh this is rare) are removed.
Another mistake is installing the refrigerator next to a radiator or in direct sunlight immediately after turning it on. Thermal load in combination with the initial start-up can lead to overheating of the condenser and emergency shutdown by thermal protection.
Frequently asked questions (FAQ)
How long can you not turn on the Atlant refrigerator after defrosting?
The minimum waiting time is 4 hours. This is necessary to allow the oil to drain into the compressor crankcase and equalize the freon pressure. It is optimal to wait 6-8 hours, especially if the defrosting was complete, with washing the chambers.
Is it possible to turn on only one compressor in a two-compressor refrigerator?
Technically, the circuits are independent, and some models allow you to turn off one of the chambers through the control panel. However, during the initial start-up after defrosting, it is better to let both circuits work to make sure that the system as a whole is working.
The refrigerator hums, but does not cool after turning on. What to do?
If the humming continues for more than 15-20 minutes, and the cold does not appear, and the tubes inside the chambers remain warm, there may be a freon leak or a clogged capillary system. A professional call is required. If it buzzes for 5 seconds and clicks, there is a problem with the start relay.
Do you need to wash the inside of the refrigerator before turning it on for the first time?
Yes, after defrosting, be sure to wipe the chambers with a soft cloth and a neutral detergent to remove any remaining odors and bacteria. After washing, the doors should be open until completely dry and airy before you turn on the appliance.
Why are the side walls of the refrigerator hot?
In modern models Atlant the condenser (radiator) is often built into the side walls of the case. Their heating to 40-50 degrees in the first hours of operation or during active freezing of products is a normal physical process of heat removal.