How to clean the tubes in refrigerator: drainage, capillary and condenser

Clogged pipes in the refrigerator are one of the most common causes of breakdowns that can be fixed without calling a technician. If water accumulates in the lower part of the chamber, the compressor works without stopping, and ice or frost forms on the back wall, they are to blame. In 80% of cases, the problem lies in drain tube, but sometimes other elements of the system become clogged: capillary tube (in models with No Frost) or condenser channels.

Cleaning the tubes is a procedure that you can do yourself in 20–60 minutes, if you know the nuances. In this article we will analyze exact signs of blockages for each type of pipesdetailed instructions with photos and videos, as well as a list of tools that can be found in every home. We will separately focus on errors that lead to repeated blockages or breakdowns of the refrigerator.

Signs of clogged pipes: how to identify the problem

The first step is correct diagnosis. Symptoms of blockages depend on which particular pipe has stopped functioning normally. Below is a table with key features for each type.

If you observe at least 2-3 signs from one column, the probability of a clogged tube is 90% For an accurate diagnosis, you can carry out a simple test:

⚠️ Attention: Before checking, unplug the refrigerator and wait until it completely thaws (if there is ice). In models with No Frost 1-2 hours are enough, in drip models - up to 6 hours.

For the drainage tube:

1. Fill a syringe (without a needle) with 20-30 ml of warm water.
2. Carefully pour water into the drainage hole inside the chamber.
3. If the water does not come out or pours back out, the tube is clogged.

For the capillary tube (for experienced users only!):

• 🔧 Check the temperature of the condenser (rear grill) - if it is cold and the compressor is running, it may be clogged.
• 📉 Use a pressure gauge to check the pressure in the system (special equipment).

Tools and materials for cleaning

To clean the pipes, you don’t need professional tools - just available tools are enough. Here is a complete list of what you may need:

• 🧹 Plastic a tube (from a dropper or cocktail straw) - for cleaning the drainage.
• 💉 Syringe (20-50 ml) or a rubber bulb - for washing.
• 🧴 A means for cleaning: baking soda, vinegar, citric acid or a specialized cleaner (for example, Topperr 3104).
• 🔧 Screwdriver (cross or flat) - for dismantling protective panels.
• 🧤 Rubber gloves - to protect hands from dirt and chemicals.
• 📦 Rags or sponges - for collecting water and condensation.

For cleaning capillary tube (in systems No Frost), you may additionally need:

• 🔥 Hair dryer (for warming up the tube when clogged with ice).
• ⚗️ Alcohol or acetone (to dissolve oil deposits).
• 🛠️ Compressor (for blowing with compressed air).

⚠️ Attention: Do not use metal objects (wire, knitting needles) to clean the drain tube - they can damage the plastic and worsen the blockage. The best option is a flexible plastic tube with a diameter of 3-5 mm.

If. serious blockage (for example, mold or grease deposits have accumulated in the tube), it may be necessary special cable for cleaning pipes (sold in hardware stores). For a capillary system it is better to use kit for cleaning refrigeration systems (for example, Mastercool 67600), but it is only suitable for professionals.

Disconnect the refrigerator from the mains|Empty the chambers of food|Prepare a basin for collecting water|Put on gloves and protective clothing|Check the presence of all tools-->

How to clean the drain tube: step by step instructions

The drainage tube is the most vulnerable place in refrigerators with a drip defrosting system (Indesit, Atlant, Biryusa etc.) It becomes clogged due to the ingress of crumbs, food particles and mold. Cleaning takes 15-30 minutes and consists of 5 steps:

1. to the drainage hole

The hole is located on the back wall of the refrigerator compartment (at the bottom, under the evaporator). In some models (Samsung RL-33, LG GA-B419) it is closed with a plastic plug - it must be carefully pryed off with a screwdriver.

2. Mechanical cleaning

Take a plastic tube (from the dropper) and insert it into the hole to a depth of 5-10 cm. Using rotating movements, push it further until you feel resistance. Then:

1. Pull the tube out 1-2 cm and push it again.
2. Repeat 3-4 times to destroy it. plug.

If the tube does not pass, try blow out the tube a rubber bulb or syringe (without water!). Do not use excessive force - the plastic may crack.

3. solution

Prepare a cleaning solution:

• 🍋 Citric acid: 2 tablespoons per 1 liter of warm water.
• 🧪 Vinegar: 1:1 with water (for severe blockages).
• 🧼 Soda: 3 tablespoons per 1 liter of water + 1 tablespoon of liquid soap.

Pour the solution into the drainage hole using a syringe or bulb. Wait 10-15 minutes, then rinse. clean water (0.5–1 l). Water should flow freely into the condensate container (it is located above the compressor).

4. Checking the result

Pour 50 ml of water into the syringe and inject it into the hole. If the liquid leaves without delay, the tube is clean. Otherwise, repeat the flushing.

5. Prevention of repeated blockages

To prevent the drainage from becoming clogged again:

• 🧼 Rinse the hole with soda solution once a month.
• 🥬 Store food in containers so that crumbs do not fall into tube.
• 🌡️ Monitor the temperature in the chamber (optimally +4...+5°C) - when freezing, the ice blocks the drain.

Cleaning the capillary tube in No Frost systems

The capillary tube is a thin copper channel through which freon circulates. In refrigerators with No Frost (Bosch KGN39XL30, Samsung RB-30 J3200) it often becomes clogged due to:

• 🛢️ Oil deposits (from the compressor).
• ❄️ Ice (if the defrosting system is not working properly).
• 🔧 Metal shavings (after repair).

Cleaning the capillary tube is a more complex procedure than cleaning the drainage. It requires partial disassembly of the refrigerator and special tools. If you are not confident in your abilities, it is better to contact a specialist.

Step-by-step instructions

1. Disconnect the refrigerator and wait for complete thawing (12-24 hours).
2. Remove the back panel (unscrew the screws with a screwdriver). Capillary tube - a thin copper tube running from the compressor to the evaporator.
3. Locate the blockage:
   • If the tube is cold only at the inlet to the evaporator, the blockage is at the beginning.
   • If the compressor is cold, the blockage is closer to the end.

Warm the tube with a hairdryer (temperature 150–200°C) at the site of the blockage. This will help dissolve ice plugs or oil deposits.

Blow the tube with compressed air (use a compressor with a pressure of no more than 6 bar). The blowing direction is from the evaporator to the compressor!

Rinse the tube with solvent (acetone or alcohol) using a syringe. Inject 5-10 ml of liquid, then blow out again.

⚠️ Attention: If after cleaning the refrigerator does not cool, the tube may have been damaged. In this case, soldering equipment and recharging the system are required - independent repair is not recommended. freon leak or tube damage. In this case, soldering equipment and recharging the system are required—self-repair is not recommended.

In models with Low Frost (for example, Liebherr CN 4015) capillary the tube is often connected to filter-drier. If the blockage does not clear, check it too - replace it if necessary.

What to do if the tube is damaged?

If during cleaning you accidentally bend or puncture the capillary tube, immediately shut off the line (bend the ends) and call a technician. Independent soldering without a vacuum pump and a cylinder with freon will lead to a repeated leak within 1-2 weeks.

Cleaning condenser tubes

Condenser tubes (the radiator on the back wall of the refrigerator) become clogged less often, but their cleaning is no less important. Dust, animal hair and grease deposits reduce heat transfer, causing the compressor to wear out. Signs of clogging:

• 🔥 The refrigerator gets very hot at the back.
• 💰 Electricity consumption has increased.
• 🛠️ The compressor turns off less often than usual.

How clean:

1. Turn off the refrigerator and move it away from the wall.
2. Remove dust with a dry brush (you can use a vacuum cleaner with a narrow nozzle).
3. Wash the tubes with soapy water (soda or detergent for dishes).
4. Dry with a hairdryer or napkins.
5. Check the fan (in models with No Frost) - it can also be clogged dust.

For hard-to-reach places, use bottle brush or compressed air (keyboard cleaning can). Do not use metal brushes - they can damage the aluminum fins of the condenser.

⚠️ Attention: In refrigerators with built-in condenser (for example, Samsung RB-29 FERNCSA) the radiator is hidden under the side walls. To clean, you will need to remove the decorative panels - this may void the warranty.

Common mistakes when cleaning pipes

Even experienced users sometimes make mistakes that lead to repeated blockages or breakdowns Here are the most common of them:

Another typical mistake is cleaning the tubes without turning off the refrigerator. This is dangerous for two reasons:

1. Risk of electric shock (especially when working with metal tools).
2. Damage to the compressor if it suddenly turns on while purging the capillary tube.

Also, many people forget about prevention. For example, after cleaning the drainage, they do not install a protective mesh on the hole, which is why the tube becomes clogged again after a month.

Prevention of blockages: how to avoid problems

Regular maintenance of refrigerator tubes reduces the risk of blockages by 70%. Here are proven methods of prevention:

• 📅 Monthly cleaning of the drainage hole soda solution (once a month).
• 🧊 Humidity control in the chamber - do not store open liquids, wipe off condensation.
• 🍎 Proper storage of food:
  • Meat and fish - in sealed containers.
  • Vegetables and fruits - in special boxes.
  • Liquids (soups, milk) - in closed containers.
• 🌡️ Maintenance optimal temperature:
  • Refrigerator compartment: +4...+5°C.
  • Freezer compartment: –18°C.
• 🔄 Regular defrosting (even for No Frost - once every 6 months).

For models with No Frost it is additionally recommended:

• 🌀 Once every 3 months, clean fan from dust (it is located behind the back panel of the freezer).
• 🔥 Monitor operation evaporator heater —if it does not turn on, ice will build up on the tubes.

If your refrigerator is in a room with high humidity (for example, in a kitchen without a hood), use moisture absorbers (silica gel or special tablets for refrigerators). This will reduce the amount of condensation and reduce the load on the drainage system.

When to call a specialist: signs of serious damage

Not all problems with pipes can be solved on your own. Here are the situations in which professional help is required:

• 🔧 Damage to the capillary tube (cracks, fractures) - you need soldering and refilling freon.
• ❄️ Icing on the evaporator after cleaning - refrigerant leakage is possible.
• 🌡️ The compressor does not turn off, but the tubes are clean - the thermostat or sensor is faulty.
• 💦 Water continues to flow after cleaning the drainage - there is a blockage in the condensate container.
• 🔥 The refrigerator is electrocuted When it touches the body, the insulation of the tubes is damaged.

The cost of repairs depends on the type of breakdown:

⚠️ Attention: Prices do not include the cost of spare parts and may vary depending on the region and model of the refrigerator. For an accurate calculation, contact the service center.

If the refrigerator is under warranty, do not try to clean the tubes yourself - this may result in refusal of free repairs. Contact the brand's authorized service center (Atlant, Indesit, LG etc.).

FAQ: Frequently asked questions about cleaning pipes

Is it possible to clean the pipes without turning off the refrigerator?

No. Any manipulations with tubes (especially capillary and drainage) require disconnection from the network. Otherwise, the risk of electric shock or damage to the compressor increases 10 times. An exception is external cleaning of the capacitor with a brush (but even here it is better to remove the plug from the socket).

What should not be used to wash the drainage tube?

It is prohibited to use:

• 🧴 Aggressive chemicals (for example, "Mole" for sewage) - they corrode plastic.
• 🔥 Boiling water - can deform the tube.
• 🧂 Salt - crystals clog the hole even more.

Optimal means: soda, vinegar, citric acid or specialized cleaners for refrigerators.

How often should you clean the tubes in a refrigerator with No Frost?

For models with No Frost recommended:

• 🌀 Capillary tube — 1 time every 2-3 years (or if there are signs clogging).
• 💨 Condenser —once every 6 months.
• 🍃 Drainage tube —once a year (they get clogged less frequently than in drip models).

If the refrigerator is in a dusty room or you have pets, the condenser needs to be cleaned more often (every 3 months).

What to do if, after cleaning the drainage, water still flows?

The reasons may be as follows:

1. There is a clog in the condensate container (located above the compressor). You need to remove the back cover and wash it.
2. Incorrect tilt angle of the refrigerator. It should be tilted back 1-2° (check with a building level).
3. Damage to the drainage tube. If it is cracked, replacement will be required.
4. Malfunction of the defrost sensor (in models with No Frost). Diagnostics required.

Can a steam generator be used to clean tubes?

A steam generator is suitable Only for external cleaning of the condenser or removing fatty deposits from the drainage hole. It can be used to clean internal tubes It is impossible for two reasons:

1. Hot steam can deform plastic parts.
2. Moisture from steam condenses inside the tubes and leads to a new blockage.

For a capillary tube, a steam generator is strictly prohibited - it can cause corrosion of copper.