Coffee machines series Caffè Corso from an Italian manufacturer DeLonghi have proven themselves to be reliable devices for the home, but regular maintenance requires access to internal components. Over time, coffee oils and limescale deposits accumulate in the hydraulic system and brewing unit, which can lead to a decrease in the quality of the drink or breakdown of the mechanisms. Disassembling the device yourself is an effective way to extend the life of the equipment without contacting a service center, if you have basic skills in working with tools.
The process of dismantling the case and internal components requires care, as there are fragile plastic parts and electrical connections inside. Incorrect handling of latches or force can damage the housing, so it is important to proceed consistently and carefully. Before starting any work, make sure that the device is completely disconnected from the power supply and has cooled down after last use.
In this article we will take a detailed look at the stages of disassembling a popular model DeLonghi ESAM 2600 and its analogues so that you can carry out deep cleaning or replace seals. You will learn how to safely remove the side panels, access the infuser and pump, and what tools you will need for this procedure. A competent approach to maintenance will preserve the warranty on the main components and ensure stable operation of the coffee machine for many years.
Preparation of the workplace and necessary tools
High-quality disassembly is impossible without a properly organized space and a set of tools. You'll need a clean, well-lit desk covered with a soft cloth or silicone mat to avoid scratching the case's glossy surfaces or losing small screws. The absence of dust and foreign objects minimizes the risk of debris getting inside the mechanism when the case is open.
The basic tool kit should include a Phillips size screwdriver PH1 or PH2, since these are the screws most often used by the manufacturer. A flathead screwdriver with a thin blade can also be useful to gently pry off the plastic clips if they are tight in the grooves. To remove hard-to-reach parts, it is sometimes useful to use tweezers or a medical forceps.
- 🛠️ Medium-sized Phillips screwdriver for removing case screws.
- 🔧 Flat screwdriver with a thin blade for working with latches.
- 🧤 Latex gloves to protect hands from dirt and coffee residues.
- 🧼 Cleaning products: citric acid, decalcification tablet or specialized chemicals.
Don't forget to prepare a container for water that may remain in the tubes and towels for wiping surfaces. Unplug the coffee machine in advance and allow it to cool completely, especially if you have just prepared hot drinks. It is critical to drain all water from the tank and internal lines before starting work to avoid short circuits.
☑️ Preparation for disassembly
Dismantling external elements and removing the housing
The first step is always to remove removable external components that do not require the use of a screwdriver. Start by removing the water tank, drip tray and ground coffee compartment. These elements can be removed by simply pulling them up or pressing special latches located on the front panel.
After releasing the inner chamber, it is necessary to remove the top cover, which is often held on by screws hidden under decorative plugs or rubber pads. In the model Caffè Corso The main fasteners are located at the rear of the device and under the removable tray. Be careful when unscrewing the screws so as not to strip the threads in the plastic seats.
⚠️ Caution: Do not use excessive force when removing plastic panels. If the element does not budge, check that all screws are removed and that it is not caught in internal cables or tubes.
The side panels are removed by carefully releasing the internal latches. To do this, you need to insert a flat-head screwdriver into a special groove between the front and side of the case, lightly pressing and pulling the panel towards you. Movements must be smooth so as not to break the plastic “ears” of the fasteners, which can easily break if handled carelessly.
Access to the brewing unit and its maintenance
The brewing unit is the heart of the coffee machine and is the one that requires the most thorough cleaning. Unlike some other models, the DeLonghi Caffè Corso the brewing mechanism is removed through the front door after removing the side panels and, in some modifications, dismantling the front decorative frame. Make sure the unit is in the down position before removing.
To do this, turn on the car, wait for the warm-up to finish and immediately unplug it from the outlet before the engine has time to return to the parking position. This will allow you to gain access to the mechanism. Gently press the red tabs on the sides of the block and pull it towards you. If the unit is jammed, it may be necessary to partially disassemble the front panel to access the release levers.
After removing, rinse the unit with warm water without using detergents, removing coffee dust and residue. Inspect the rubber seals and strainer for damage or heavy contamination. For deep cleaning, you can use a soft brush, but lubricate the mechanism with oil, as this will ruin the taste of the coffee.
- ☕ Rinse the brewing unit under running warm water, removing all coffee residues.
- 🧹 Use a soft brush to clean the strainer and pistons.
- 💧 Lubricate the guides with food grade silicone only if there is a strong squeak (rarely).
- 👀 Check the integrity of the rubber seals for cracks.
What should I do if the brewing unit cannot be removed?
If you cannot remove the block using the standard method, the mechanism may be stuck in the upper position. In this case, you will have to remove the top cover and manually, carefully turning the drive gears, lower the block to the lower position. Do this only with the power completely off!
Dismantling the hydraulic system and pump
Coffee machine hydraulic system Caffè Corso includes pump, boiler, valves and connecting pipes. Access to these components opens after complete removal of the housing. The pump in this model is usually located at the bottom of the device and is mounted on rubber shock absorbers to reduce vibration.
Before disconnecting the tubes, it is recommended to photograph their location so as not to confuse the inputs and outputs during assembly. The tubes can be secured with clamps or inserted into quick fittings. To remove the tube from the fitting, you need to press on the fixing ring and at the same time pull the tube towards you. Be prepared for residual water to leak out of the system.
| Component | Function | Cleaning frequency | Symptoms of a problem |
|---|---|---|---|
| Vibration Pump | Create a pressure of 9 bar | As needed | Noise, weak stream |
| Boiler (Thermoblock) | Water heating | Decalcification once every 3 months. | Doesn't heat, leaks |
| Solenoid valve | Pressure release | When disassembling | Dripping into the pan |
| Flow sensor | Water volume control | For problems with dosage | Invalid portion size |
If the pump needs to be replaced, unscrew the mounting screws and disconnect the electrical terminals. New pumps are often supplied without fittings, so the old ones are carefully replaced with the new pump. When assembling hydraulics, it is important to make sure that all connections are tight and that the tubes are not twisted or pinched by the housing.
When replacing the pump, check the condition of the strainer at the water inlet - its contamination is often the cause of noise and pressure loss, and not a breakdown of the pump itself.
Electrical part and control unit
Coffee machine electronics DeLonghi represented by a control board, which is usually located at the top or rear of the case. To access it, you may need to remove additional plastic screens. The board is connected to the motor, pump, sensors and control panel via connectors.
When working with electrical components, it is extremely important to be careful not to touch the terminals with your hands, as residual oil and sweat can oxidize the connections. If you plan to test circuits with a multimeter, make sure that the device is completely de-energized. Most often, users are faced with the need to check thermostats or replace control panel buttons.
⚠️ Attention: Capacitors on the board can retain charge even after being disconnected from the network. Do not touch conductive parts of the board unnecessarily and avoid short-circuiting tools.
If the coffee machine does not turn on, check the integrity of the fuse, which is often located near the power cable entry point. Replacing a blown fuse with a similar one may restore functionality, but if the problem persists, there is a short circuit somewhere in the circuit that requires professional diagnosis.
Assembly and initial launch
The device is assembled in the reverse order: first, the internal components are installed, cables and tubes are connected, then the housing is fixed. Make sure all screws are tight but not overtightened to avoid cracking the plastic. Pay special attention to the correct position of the tubes - they should not touch hot parts of the boiler or sharp edges of metal parts.
Once fully assembled, fill the reservoir with fresh water and turn on the coffee machine. The first start-up may be accompanied by noise until the system fills with water and air comes out. It is recommended to run 2-3 cycles of preparing water without coffee through the system to flush the internal lines of possible dust or cleaning agents.
- 🔌 Connect your device to the network and turn on the power button.
- 💧 Wait until the system warms up and fills up.
- ☕ Drain 2-3 portions of hot water to flush the circuit.
- ✅ Check all connections for leaks while the pump is running.
If extraneous sounds or leaks appear during operation, immediately turn off the device and repeat the check of the problem unit. Often the reason lies in a not fully latched tube or a foreign object. When assembled correctly, the machine operates quietly and consistently, producing coffee with a rich, crema-like crema.
High-quality assembly and checking the tightness of connections is the key to a long service life of the coffee machine after repair. Don't ignore the test run phase of the system.
Frequently asked questions (FAQ)
Can the brewing unit be washed in the dishwasher?
Manufacturer DeLonghi We do not recommend washing the brewing unit in the dishwasher. High temperatures and aggressive detergents can deform plastic parts and damage the special lubricant of the guides, which will lead to creaking and jamming of the mechanism. It is better to use warm water and a soft brush.
How often should I completely disassemble my coffee machine?
Complete disassembly and removal of the housing is rarely required, usually in case of breakdowns or deep blockages. Routine maintenance, such as removing and rinsing the brew unit, should be done every 2-3 weeks or after 200-300 cups, depending on the water hardness and fat content of the coffee.
What should I do if, after assembly, the coffee machine starts to make a lot of noise?
Loud noise often indicates that the pump is airy or the tubing is not connected correctly. Check that all connections are tight and try running the water cycle several times. If the noise persists, the pump may have been installed incorrectly or may require replacement.
Where can I get the assembly diagram for my DeLonghi model?
Official service manuals (Service Manual) can often be found on the Internet by searching for the model and the phrase “Service Manual” or “Exploded View”. For Caffè Corso Video reviews on specialized channels are also useful, where the procedure is visually shown.