Refilling freon in an Atlant refrigerator: a step-by-step guide with photos and tips masters

The refrigerator Atlant stopped freezing, but the compressor is running non-stop? Most likely, the problem is a leak of freon, a refrigerant that circulates through the system and provides cooling. You can refill freon at home yourself if you understand how the system works and prepare the necessary tools. However, this is a task of increased complexity: errors during refilling can lead to breakdown of the compressor or even an explosion of the refrigerant cylinder.

In this article we will analyze in detail the entire process: from diagnosing the malfunction to the final check of the operation of the refrigerator. You will learn which freon is suitable for models Atlant (for example, MHM-1708 or XM-4021-000), how to find the location of the leak, and what safety measures must be followed. Spoiler: you cannot do without a vacuum pump and a manometric manifold - this is not a task where you can save on tools.

If you have never worked with refrigeration equipment, it is better to trust the refueling professionals. But if you decide to act on your own, carefully follow the instructions and do not skip the sections about safety precautions and checking the tightness of the system.

1. Signs of a freon leak in the Atlant refrigerator

The first signal of problems with the refrigerant is lack of cold when the compressor is running. But there are other symptoms that will help confirm the diagnosis:

• 🔊 The compressor works without interruptions or turns on for 1-2 minutes and immediately turns off.
• ❄️ Little ice forms in the freezer or it melts after a few hours.
• 🌡️ The temperature in the main chamber does not drop below +10...+15°C, even at maximum mode.
• 🔧 There is no heating on the condenser tubes (rear grill) - they remain cold.
• 💨 The refrigerator smells of “chemicals” - a specific sweetish smell freon (in rare cases).

If at least 2-3 signs from the list match, the probability of a refrigerant leak is 80-90%. But before refueling, you need to make sure that the problem is not something else:

• 🔌 Check whether the Vacation or Demo mode is disabled (on some models Atlant there is such a function).
• 🧊 Make sure that the door sealing rubber is not damaged and fits tightly.
• ⚡ Avoid damage to the thermostat or electronic control unit (if the refrigerator has a display).

⚠️ Attention: If the refrigerator Atlant was released before 2010, it may use freon R-12 (outdated and prohibited in new models). To refill such a refrigerator, you will need to replace the refrigerant with R-134a or R-600a, but this will entail replacing the compressor oil and flushing the system. It is strictly not recommended to do this without experience.

To finally confirm a leak, you can use leak detector (electronic or ultrasonic) or a soap solution. More about this in the next section.

2. Preparation of tools and materials

To fill freon into the refrigerator Atlant you will need specialized equipment. Without it, it is impossible to do quality work. Here is the complete list:

Also prepare protective gloves (freon freezes the skin), goggles and respirator (when soldering). You need to work in a well-ventilated area - refrigerant vapors are toxic.

What kind of freon is needed for Atlant? Most modern models use:

• R-134a - for refrigerators with compressors Danfoss or Secop (for example, Atlant XM-4426-080).
• R-600a (isobutane) - for models with compressors Embraco or Matsushita (for example, Atlant MHM-1708-60).

The type of refrigerant is indicated on compressor nameplate (sticker on the black case at the back of the refrigerator) or in device passport. If the marking is erased, you can determine the type by pressure:

• 🔹 R-134a: suction pressure ~0.1–0.3 bar, discharge ~10–12 bar.
• 🔹 R-600a: suction pressure ~0.05–0.1 bar, discharge ~8–10 bar.

⚠️ Attention: Never refill R-134a instead R-600a and vice versa! This will lead to breakdown of the compressor. Also, you cannot mix different types of freon in one system.

If you are not sure about the type of refrigerant, contact the service center Atlant indicating the model of the refrigerator - they will tell you the exact type. parameters.

3. Finding the location of the freon leak

Before refueling, be sure to find where exactly the leak occurred. Otherwise, the new freon will leak out in a few days, and the procedure will have to be repeated. Places of leaks in refrigerators Atlant usually standard:

• 🔧 Copper tubes of the condenser (rear grill) - most often suffer from corrosion or mechanical damage.
• 🔄 Connections of the tubes with the compressor —may weaken from vibration.
• 🧊 Evaporator freezer compartment —cracks due to freezing or inaccurate defrosting.
• 🔌 Service port (filling valve) - if the refrigerator has already been repaired previously.

How to find a leak? There are three ways:

1. Soap solution. Apply a foam solution (soap + water) to suspicious areas. Bubbles will appear in the leak area. The method only works if there are freon residues in the system.
2. Electronic leak detector. The device reacts to freon vapors. Bring the sensor close to the tubes - if there is a leak, a sound signal will be heard.
3. Ultrasonic detector. Catches high-frequency noise of the escaping gas. Suitable for searching for microcracks.

If a leak is found, it must be eliminate before refueling:

• 🔧 For small cracks in For copper tubes, use soldering with solder and flux.
• 🔄 If the connection is damaged, tighten the nut or replace the O-ring.
• 🚫 If there is a leak in the evaporator (aluminum), it will have to be replaced - soldering aluminum at home is unreliable.

Critical information: In Atlant refrigerators with the No Frost system, leaks often occur at the place where the evaporator tube is soldered to the freezer body. This area is difficult to solder without special equipment - in 70% of cases the evaporator needs to be replaced.

What to do if the leak could not be found?

If after a thorough check the leak is not detected, but the freon has clearly leaked out, two options are possible:

1. Microcrack in an inaccessible place (for example, under thermal insulation).

2. Leakage through the compressor seal (repair is possible only at the service station).

In both cases, refilling freon without eliminating the cause is pointless - the gas will leak out again within 1-2 weeks.

4. Step-by-step instructions for refilling freon

When the leak is eliminated, you can start refilling. The entire process takes 1.5–3 hours depending on experience. Here are the detailed instructions:

Step 1: Bleeding out the remaining freon (if any)

If there is still refrigerant left in the system, it needs to be vented. To do this:

1. Connect pressure manifold to the service port (usually located on the compressor tube).
2. Unscrew the valve on the manifold - the remaining freon will come out under pressure.
3. Close the valve after the hissing stops.

Step 2: Evacuate the system

This is the most important step! The vacuum removes moisture and air that can clog the capillary tube.

1. Connect vacuum pump to the manifold (central fitting).
2. Open the pump valve and turn it on. Evacuate the system at least 20-30 minutes.
3. Close the pump valve, then turn it off. The system should remain under vacuum for another 10 minutes - if the pressure gauge needle does not rise, the tightness is normal.

⚠️ Attention: If, after turning off the pump, the pressure in the system begins to increase (the pressure gauge needle creeps up), then there is a leak somewhere. Repeat the search for the problem area!

Step 3: Refilling freon

Now you can charge the refrigerant. Proceed carefully:

1. Place the cylinder with freon on the scales and reset them to zero.
2. Connect the cylinder to the manifold through the hose (left fitting).
3. Slowly open the cylinder valve, then the manifold valve. Freon will begin to enter the system.
4. Control the weight: Atlant usually requires 50–120 grams freon (the exact weight is indicated on the compressor nameplate).
5. After filling the required amount, close the valves and disconnect the cylinder.

Step 4: Check the pressure

Make sure that the pressure in the system is normal:

• 🔹 For R-134a: ~0.2–0.4 bar at suction, ~8–12 bar at discharge.
• 🔹 For R-600a: ~0.05–0.1 bar at suction, ~6–9 bar at discharge.

If the pressure does not match, there may be too little/too much freon left in the system. In this case, you need to bleed off the refrigerant and repeat the refill.

Step 5: Checking the operation of the refrigerator

Connect the refrigerator to the network and watch its operation:

• 🔊 The compressor should start and work in cycles (turn on for 10-20 minutes, then turn off).
• ❄️ After 1-2 hours, the freezer compartment should begin to become covered with frost.
• 🌡️ The temperature in the main chamber should drop to +4...+6°C.

If the refrigerator is not freezing, check:

• 🔧 The correct connection of the tubes (are there any kinks).
• 🔌 The operation of the thermostat (it may be broken).
• 🧊 The tightness of the doors (the seal can let warm air through).

5. Typical mistakes and how to avoid them

Even experienced professionals sometimes make mistakes when refilling freon. Here are the most common mistakes and their consequences:

Another common problem is incorrect soldering leak locations. If the solder does not completely seal the crack, the freon will leak out in small portions and the refrigerator will stop freezing again after 1-2 weeks. To avoid this:

• 🔥 Use copper flux (not acid!).
• 🔧 Heat the soldering area evenly, avoiding overheating.
• 🧼 After soldering, rinse the area with alcohol to remove any remaining flux.

What to do if the refrigerator does not work after refueling? Possible reasons:

• 🔌 The compressor is faulty (check windings with a multimeter).
• 🧊 The capillary tube is clogged (needs to be cleaned or replaced).
• 🌡️ The thermostat or electronic unit is broken (diagnostics required).

6. Alternative ways to solve the problem

If refilling freon seems too complicated or you are not confident in your abilities, consider alternative options:

• 🔧 Call a technician. Average cost of refilling freon into a refrigerator Atlant — 2500–4500 rubles (depending on the region and type of refrigerant). For this money you will receive a guarantee for work and diagnostics of other components.
• 🔄 Replacement of the refrigerator. If your model is older than 10 years, repairs can cost 50–70% of the cost new Atlanta. In this case, it is more advisable to buy a modern refrigerator with lower energy consumption.
• 🧊 Temporary solution. If the leak is small, you can recharge the system with freon for 1-2 months, but this will not completely eliminate the problem.

Also pay attention to warranty card. If the refrigerator is under warranty (usually 1–3 years), repairing it yourself will lead to its loss. In this case, the only option is to contact authorized service center Atlant.

⚠️ Attention: In some regions there are recycling programs for old refrigerators with an additional payment for a new one. For example, when you return your old one Atlanta you can get a discount of up to 10–15% on the purchase of a new model. Check the current conditions in hardware stores.

If you are determined to refill freon yourself, check again:

• 🔧 Availability of all tools (especially the vacuum pump!).
• 📋 Exact type of freon for your model.
• 🔍 No leaks after repair.

7. Maintenance of the refrigerator after refueling

After successful refilling of freon, the refrigerator requires special care in the first days:

• 🕒 Do not load the chambers with food for 4–6 hours —let the system stabilize.
• 🌡️ Set the thermostat to the middle position (usually 3–4 on the scale).
• 🧹 Wipe the condenser (rear grill) from dust - this will improve heat transfer.
• 🔌 Monitor the compressor operating cycle: it should turn on for 10–15 minutes and turn off for 20–30 minutes.

On the first day, check:

• 🔊 Is there any extraneous noise (knocking, humming) when the compressor is operating.
• ❄️ Is frost forming on the evaporator of the freezer compartment.
• 🌡️ Does the temperature in the main chamber reach +4...+6°C.

If everything is in order, the refrigerator is ready for normal use. If you notice deviations (for example, the compressor works without stopping), immediately bleed off the freon and look for the cause.

How to extend the life of a refrigerator after repair? Follow these tips:

• 🧊 Defrost the refrigerator every 3–6 months (even if it has No Frost system).
• 🔌 Do not place the refrigerator next to the stove or radiator - this increases the load on the compressor.
• 🧹 Clean the condenser from dust every six months (with a vacuum cleaner or brush).
• 🚪 Do not slam the door - this breaks the tightness of the seal.

If freon charging was successful, the refrigerator will last longer 3–5 years if used correctly. However, remember: every repair is stressful for the equipment, and sooner or later the compressor or other components may need to be replaced.

FAQ: Frequently asked questions about refilling freon in Atlant

Is it possible to fill an Atlant refrigerator with freon R-600a instead R-134a?

No, this is strictly prohibited! Freon R-600a (isobutane) and R-134a have different physical properties and require different compressor oil. Charging an incompatible refrigerant will lead to:

• 🔥 Overheating of the compressor.
• 💥 Increased pressure in the system.
• 🚫 Rapid failure of the refrigerator.

If necessary replace R-12 (outdated freon) with R-134a, you will also need to change the oil in the compressor and flush the system. It is almost impossible to do this on your own.

How much freon is needed to refill an Atlant refrigerator?

The amount of freon depends on the model and volume of the refrigerator. Approximate norms:

• 🔹 Single-chamber models (MHM-1708, MHM-1806) — 50–80 grams.
• 🔹 Two-chamber models (XM-4021, XM-4426) — 80–120 grams.
• 🔹 Refrigerators with No Frost — 100–150 grams.

The exact quantity is indicated on compressor nameplate (metal plate on the black body at the back of the refrigerator). For example, the inscription Refrigerant: R-134a, 90g means that you need to fill 90 grams of freon. R-134a.

What to do if the compressor does not turn on after refueling?

If the compressor does not start after refueling, check:

1. Power. Make sure that the refrigerator is connected to the outlet and there is voltage (check the light bulb inside).
2. Thermostat. It may be broken or incorrectly configured. Try turning the thermostat knob to position Max - if the compressor starts, the problem is in the regulator.
3. Start relay. If the relay is faulty the compressor will not be able to start. Check it with a multimeter or replace it with a known working one.
4. Freon pressure. If there is too little freon, the compressor may not turn on due to the protection being activated.

If the compressor hums but does not start, it may be jammed. In this case, replacement will be required.

How often do you need to refill freon in the Atlant refrigerator?

Under normal conditions, freon in the refrigerator not consumed -it circulates in a closed circuit. Refilling is required only in two cases:

1. 🔧 Leakage due to mechanical damage to the tubes or corrosion.
2. 🔄 System repair (for example, replacing a compressor or evaporator).

If the refrigerator requires refueling more than once every 5-7 years, this indicates system problem (for example, cracks in the condenser or leaky connections). In this case, it is better to replace the refrigerator or carry out a major overhaul.

Is it possible to charge freon without a vacuum pump?

Theoretically it is possible, but highly not recommended. Without vacuuming, the following remain in the system:

• 💧 Moisture - when interacting with freon, it forms acid, which corrodes the tubes.
• 🌬️ Air - increases the pressure in the system, which leads to overheating of the compressor.

If there is no vacuum pump, you can try purge the system with nitrogen (from a cylinder), but this is less effective. The risk of repeated breakdown in this case is ~60%.