Cleaning the Nivona 520 brewing block: a detailed guide with photos and expert tips

The brewing block is the heart of any coffee machine, and Nivona 520 No exception. This is where the main process of coffee preparation takes place: water under pressure passes through the ground beans, extracting aroma and taste. But over time, coffee oils, scale and microparticles accumulate inside the block, which not only spoil the taste of the drink, but can also disable the technique. Regular cleaning of this unit prolongs the life of the device and guarantees stable quality of espresso.

Many owners Nivona 520 They face a dilemma: entrust the procedure to the service center or try to cope independently. In this article, we will discuss both options, but we will focus on the Step-by-step instructions for home cleaningIt does not require professional skills. You will learn what tools and tools you will need, how to disassemble the unit without the risk of damaging the parts, and what to do if the machine “refuses” to work after cleaning. We will also reveal the secrets of prevention, which will help to avoid expensive repairs.

It is worth noting that Nivona 520 - model with an automatic cappuccinator and a removable brewing unit, which simplifies care. However, even this design requires a delicate approach: improper actions can lead to leaks or malfunctions in the operation of sensors. If you have never cleaned a coffee machine yourself, start by learning the circuitry of the unit – this will help to avoid typical errors.

Before you start, answer the question: how often do you serve your service? Nivona?

Why cleaning the brewing block Nivona 520 Is that important?

The brewing unit is not just a detail, but a complex system where water, high pressure are connected (up to the top). 15 bars) and heating elements. Over time, three types of pollution form inside it:

• 🔘 Coffee butters and grounds residue - settle on walls, seals and filters, creating a sticky plaque. This leads to a bitter taste of coffee and clogged channels.
• 💧 Scale. - is formed due to hard water and settles on the TEN, reducing its effectiveness. In advanced cases, it can cause overheating and breakage.
• 🦠 Bacteria and mold They reproduce in a humid environment, especially if the machine is not used for a long time. It's dangerous to your health!

Manufacturer Nivona recommend Deep cleaning of the brewing block every 3-6 months (depending on the intensity of use). However, there are signs that signal the need for urgent maintenance:

• ⚠️ Coffee is poured in a thin stream or drip, instead of a uniform flow.
• ⚠️ The drink has a bitter or chemical taste.
• ⚠️ The machine makes unusual sounds (hisping, grinding) during brewing.
• ⚠️ There's a bug in the panel. E05 or E06 (related to the brewing block).

Ignoring these symptoms has serious consequences. For example, clogged brewing block can lead to increased pressure in the system and rupture of hosesAnd the scaling on the TEN is to burn it out. Repair in this case will cost 30-50% of the cost of the new car.

What you need to clean: tools and tools

Before disassembling the car, prepare everything you need. Using inappropriate tools or tools can damage plastic parts or rubber seals.

Mandatory set:

• 🔧 Screwdriver cross (PH2) - for removing protective panels.
• 🧽 A soft sponge or brush with nylon bristles (for example, a toothbrush).
• 🧴 Special means for cleaning coffee machines (recommended) Nivona Cleaning Tablets or De'Longhi EcoDecalk).
• 💧 Distilled water (1-2 liters) - for washing.
• 🧤 Rubber gloves - protection from aggressive components of detergents.

In addition (with severe pollution):

• 🧪 Citric acid (20-30 g per 1 liter of water) - to remove scale.
• 🧴 Baking soda is used to neutralize odors.
• 🔍 A flashlight to see hard-to-reach places.
• 📦 A set of new sealing rings (article for the Nivona 520 — NIV-520-SEAL-KIT).

⚠️ What NOT to use:

⚠️ Attention! Never use it for cleaning. Nivona 520 abrasive powders, hard metal brushes or harsh chemicals (e.g., domestos or mole). They destroy rubber pads and plastic parts, which will lead to leaks. Also avoid chlorine products – they leave a persistent smell, which is then transmitted to coffee.

If you use citric acid, remember: it is effective against scale, but can damage aluminum parts with prolonged contact. The optimal exposure time is no more than 20 minutes.

Where to buy the original Nivona 520?

Original Cleansing Pills Nivona Cleaning Tablets and sealing rings can be ordered on the official website of the manufacturer or from authorized dealers (for example, KoffeeMashiny.ru or 220-volt.ru). The alternative is a universal means of De'Longhi or SaecoCheck compatibility with your model before using it.

Step by step: how to disassemble and clean the brewing block

Now we move on to the most important stage. Follow the instructions carefully so as not to lose small details and damage the mechanism.

Step 1. Preparation of the machine

1. Turn it off. Nivona 520 from the socket and let it cool (at least 30 minutes).
2. Remove the leftover coffee from the ground container and rinse it.
3. Remove the water tank and the cappuccinator (if it is removable).

Step 2. Extraction of the brewing block

1. Open the top cover of the machine (where the grains are loaded).
2. Find the locks of the brewing block - usually two latches on the sides. Carefully press them and pull the block over yourself.
3. If the block fails, check if the tube interferes with the water supply. If necessary, disconnect it by taking a picture of the location.

Step 3. Disassembly of the block

Place the block on a clean surface (for example, on a towel). Next:

1. Remove the top cover of the block by unscrewing 2-3 screws (usually they are hidden under stickers).
2. Remove the filter mesh and sealing ring. Pay attention to their condition: if the rubber has lost elasticity or there are cracks on it, replace the ring.
3. Take out the piston (it can be attached to the rod). Be careful, don’t lose your spring!

Step 4. Cleaning the details

We now begin to remove the pollution:

• 🧽 Wash all removable parts (filter, cover, piston) under warm water with a mild detergent.
• 🧼 To remove scale, soak the parts in a solution of citric acid (20 g per 1 liter of water) for 15-20 minutes.
• 🪥 Clean the filter-grid holes with a toothpick or needle (carefully so as not to damage!).
• 🧴 Apply a special coffee machine product to the walls of the block and leave for 10 minutes, then rinse.

Step 5. Assembly and test run

After cleaning:

1. Dry all the details in the air (do not use a hair dryer or towels with pile!).
2. Collect the block in reverse sequence. Make sure that the sealing ring sat in place without distortion.
3. Install the unit back into the machine and connect all the tubes.
4. Pour distilled water into the tank and start the wash cycle (select the machine menu). Settings → Service → Washing).

All parts were washed and dried | O-ring whole and properly installed | Screwed screws without distortion | Pipes connected without inflection->

Common cleaning errors and how to avoid them

Even experienced users sometimes make mistakes that lead to breakdowns. Here are the most common ones and ways to prevent them:

Mistake.	Effects of consequences	How to avoid
Use of rigid brushes	Scratches on plastic, damage to seals	Use only soft sponges or brushes with nylon bristles
Cleaning the block in assembled form	Poor removal of contaminants, risk of corrosion	Always break the block into its component parts.
Ignoring replacement of sealing rings	Water leaks, errors E05/E06	Change the rings every 6-12 months or at the first sign of wear and tear.
Using vinegar instead of citric acid	Eating rubber parts, a persistent smell	Use only recommended remedies or citric acid
Incorrect block assembly	Piston jamming, brewing errors	Follow the assembly scheme, photograph the disassembly process

⚠️ Special attention deserves a mistake with screw-tug assembly. This can lead to cracks in the plastic case of the block, making it unsuitable for further use. Twisting the screws with a cross screwdriver without excessive effort - enough that they sit tightly in the slots.

Another common problem is that half-washing. If there are particles of detergent left in the system, they will get into the next coffee, spoiling its taste. To avoid this, start the wash cycle 2-3 times in a row with clean water.

Cleaning without disassembly: when is it possible?

There is not always the time or desire to disassemble the block. Fortunately, Nivona 520 supportive brush-cleaning using special tablets. This method is less effective than manual cleaning, but is suitable for regular care.

How to carry out automatic cleaning:

1. Purchased tablets (e.g., Nivona Cleaning Tablets) put it in a coffee container.
2. Pour warm water into the tank (not boiling water!) to the maximum mark.
3. Select the car menu Settings → Service → Cleaning the brewing block.
4. Wait until the end of the cycle (about 20-30 minutes). The machine will flush the system itself.
5. Repeat the cycle with clean water to remove the residues of the product.

⚠️ Important:

⚠️ Attention! Automatic cleaning does not remove scale from the TENS and does not clear deep contaminants in the piston mechanism. If your machine is used intensively (more than 5 cups a day), combine automatic cleaning with manual cleaning once every 3 months.

There are also liquid-cleaning (e.g., Puly Caff) which are added to the water. They are suitable for weekly care, but do not replace full-time care.

Prevention: how to prolong the life of the brewing block

Cleaning regularly is good, but it is even better to prevent severe contamination. Here are some tips that will help you to save. Nivona 520 in perfect condition:

• 💧 Use it. filtered or bottled water with a rigidity not higher than 4-5 °dH. It'll reduce scale formation.
• ☕ After each use flush outStart a hot water cycle without coffee (optional) Washing on the menu.
• 🌡️ Do not leave water in the tank for long – this helps to multiply bacteria. If the car is not used, drain the water.
• 🔄 Change the rings every 6 to 12 months, even if they look whole. Rubber loses elasticity over time.
• 📅 Lead. service-bookWrite down the dates of cleaning, replacement of consumables and malfunctions that appear. This will help track the dynamics.

If you live in a region with very hard water, consider installing a water system. magnetofilter at the entrance to the car. It costs about 1,500–2,000 rubles, but pays off due to savings on repairs.

Also pay attention to coffee-quality. Cheap grains with a high oil content pollute the block faster. The best option is medium-sized Arabica.

What to do if the car does not work after cleaning?

Sometimes after service Nivona 520 refuses to turn on or makes mistakes. Don’t panic – 90% of the time, the problem is solved without a master.

Common faults and their elimination:

• 🚨 Mistake. E05 (Block problem)
  Reason: Incorrect assembly, damaged sealing ring or blockage in the filter.
  Decision: Disassemble the block again, check the integrity of all the details and reassemble it. Make sure the tubes are hermetically connected.
• 🚨 The car's not turning on.
  Reason: Perhaps during the assembly, the wiring was affected or the protective cover was not closed.
  Decision: Check to see if all the panels are closed. If the problem remains, check the fuse (it is on the back panel).
• 🚨 Coffee does not pour or pours too slowly
  Reason: A clog in the filter-grid or a piston is installed incorrectly.
  Decision: Clean the filter with a needle and check the stroke of the piston - it should move freely.
• 🚨 Leakage of water
  Reason: The seal is damaged or the block cover is skewed.
  Decision: Replace the ring and make sure the block is inserted into the slots before clicking.

If after all the manipulations the machine still does not work, perhaps the problem lies in the electronics. In this case, it is better to contact the service. Average cost of diagnosis Nivona 520 1,000-1,500 rubles.

How to Reset E05 Error Without Disassembly?

Sometimes it's a mistake. E05 It's due to a temporary failure. Try to throw it off like this:

1. Turn the car off the socket for 5 minutes.
2. Turn it back on and press the buttons right away. Menus. and espresso 10 seconds.
3. If the error disappears, start the test cycle of brewing.

If the method does not work, the disassembly of the block is required.

FAQ: Answers to Frequent Questions

Can I clean the cooker in the dishwasher?

Nope! High temperatures and aggressive detergents will damage plastic parts and rubber seals. All parts of the unit can be washed only by hand with warm water.

How much does a professional cleaning cost in the service?

The cost depends on the region and the degree of pollution. On average:

• Basic cleaning (without disassembly) - 1,500-2,500 rubles.
• Deep cleaning with the replacement of seals - 3000-4 500 rubles.
• Cleaning + replacement of TENS (with strong scale) - up to 6000 rubles.

How often should the rings be changed?

The manufacturer recommends a replacement every 6-12 months. However, if you use the car daily (more than 3 cups of coffee a day), do it every 3-4 months. Signs of ring wear:

• Water leaks during brewing.
• Mistakes. E05 or E06.
• Visible cracks or deformation of rubber.

What can replace the original cleaning pills?

If you can not buy branded tablets, use:

• Special products for coffee machines of other brands (De'Longhi EcoDecalk, Saeco Cafiza).
• Baking soda (1 tbsp). Spoon per 1 liter of water - to remove odors.
• Citric acid (20 g per 1 l) - to combat scale.

⚠️ Do not use vinegar or household chemicals!

Why did the coffee get bitter after cleaning?

Probable reasons:

• Insufficient washing after cleaning - particles of detergent remained in the system.
• The filter mesh is damaged (for example, when cleaning with a hard brush).
• The sealing rings are worn out - they begin to "burn" when heated.

Decision: Wash the car 2-3 times with clean water. If the taste is not improved, check the filter and rings.