The need to set up the grinder and adjust the steam pressure immediately after unpacking the Delonghi EC 685 is often a critical moment for obtaining quality espresso. Factory settings may not match your specific roast level or water hardness, so ignoring the initial calibration will result in coffee that flows too quickly or drips at a time. Understanding the logic of work thermoblock and the pump dispenser mechanism avoids common mistakes, such as using too fine a grind, which creates excess pressure in the system.
The first thing you should do is run a system initial flush cycle without coffee to remove any possible factory dust and stabilize the temperature thermoblock. Many users mistakenly believe that the device is ready for use immediately after switching on, but air in the tubes and heating element can cause uneven water flow. Proper preparation boiler It only takes a couple of minutes, but it has a significant effect on the stability of the temperature of the first cups.
Initial preparation and launch of the device
Before turning on for the first time, make sure that the water tank is installed correctly and fits tightly to the body, as the liquid level sensor must be activated to activate the pump. If the indicator blinks and no water comes out, check the position of the container and make sure that the magnetic float is not stuck. The water must be soft, otherwise scale will quickly damage it. thermoblock, which is in the model EC 685 is the main heating element.
The warm-up process takes about 40 seconds, which is indicated by the readiness indicator stopping blinking. At this moment, the system is already filled with water, and the pressure in the circuit has stabilized. It is important not to try to start the water or steam until it is ready to avoid water hammer or cold water getting into the cup.
⚠️ Attention: Never turn on the device without water in the tank, as dry running of the pump can lead to overheating and failure.
To test the system, run about 50 ml of hot water through idle (without coffee). This action also helps warm up the metal holder if you have rinsed it with boiling water first. Stable temperature is the key to proper extraction, and thermoblock should be in working mode.
Warm the metal horn (holder) with hot water before each pouring of coffee to avoid a sharp drop in temperature when ground beans come into contact with cold metal.
Grinding and tamping settings for the perfect espresso
The quality of espresso directly depends on the degree of grinding of the beans, and for Delonghi EC 685 A medium grind, close to fine salt, is considered optimal. If the coffee flows like water, the grind is too coarse and the water is not meeting enough resistance. coffee tablet. In this case, it is necessary to reduce the step on the coffee grinder to increase the extraction time to 20-25 seconds.
The opposite situation, when the liquid drips in rare drops or does not flow at all, indicates too fine grinding or excessive compaction. The pressure in the system increases and water cannot pass through the compressed coffee, which can cause the safety valve to break. Use the tamper with a force of about 8-10 kg, simply leveling the surface, since the main work of creating resistance is done by a properly adjusted grinding.
To control the process, use the included measuring spoon and lightly tap the horn on your palm so that the coffee is evenly distributed before tamping. The uniformity of the distribution of fractions affects how water will pass through coffee tablet, preventing channeling.
Adjusting the cappuccino maker and frothing milk
Panarello on the model EC 685 equipped with a special coupling that allows you to regulate the amount of air captured when whipping. Turning the outer ring of the nozzle changes the diameter of the air intake hole: the “minimum” position gives a denser, glossy foam, and the “maximum” position gives volume and air. For a classic cappuccino, the middle position is recommended to achieve a balance between texture and volume.
The churning technique requires immersing the tip of the tube appena sotto la superficie milk to initiate the aeration process (fizzing) and then lowering it deeper to create a funnel and warm the entire volume. Steam should be dry and powerful, so before starting the procedure, always release a little condensation until pure steam comes out. This will prevent excess water from getting into the milk.
⚠️ Attention: After each use of the cappuccino maker, immediately blow out the steam wand and wipe it with a damp cloth so that the milk fat does not dry out inside and clog the holes.
The ideal temperature for drinking milk is 60-65 degrees Celsius; If it becomes impossible to keep your hand on the pitcher, heating should be stopped. Overheated milk loses its sweetness and acquires the taste of a boiled product, which spoils the taste of the drink. Panarello designed to work with cold milk, preferably cooled to 4-5 degrees.
Programmable serving size and working with tablets
The device allows you to program the volume of water supplied for one and two cups, which eliminates the need to stand next to the coffee maker. To set up, you need to press the corresponding button (1 cup or 2 cups) and hold it until the desired amount of drink is in the cup. Then release the button and memory The device will preserve the duration of the pump operation for subsequent cycles.
The use of ready-made coffee pods (E.S.E. pods) is also supported by this model thanks to a special adapter in the filter basket. When using tablets, tamping is not required, since the paper already creates the necessary resistance to the flow of water. However, it is worth considering that tablets are often coarser than freshly ground coffee, so the flow may be faster.
The secret of double espresso
If you use a double basket and the coffee comes out watery, try increasing the coffee dose by 1-2 grams and slightly increasing the tamping to increase the density of the tablet.
To reset the volume settings to factory values, you need to turn off the coffee maker, then hold down the programming button and turn on the device, holding the button for a few seconds. The indicators will blink to confirm the return to standard settings. This is useful to do when changing the type of coffee or type of water used.
Descaling system and maintenance
Water hardness is the main enemy of any coffee equipment, and Delonghi EC 685 no exception. If signs of scale appear (noise during operation, reduced steam flow, prolonged heating), it is necessary to start a decalcification cycle. For this, a special product is used, which is poured into the tank in the proportion specified by the manufacturer, usually 100 ml of product per 1 liter of water.
The cleaning process takes about 30 minutes and takes place in several stages: supplying the solution, pausing to dissolve deposits and repeated rinsing with clean water. During the cycle, do not interrupt the operation of the device, as this may leave harsh chemicals inside thermoblock.
| Cleaning stage | User action | Indication |
|:--- |:--- |:--- |
| Preparation | Pour decalcifier solution | All indicators are flashing |
| Draining the solution | Open steam tap | Steam indicator lights up |
| Flushing 1 | Fill with clean water, open the tap | Cup indicator flashes |
| Flushing 2 | Repeat the cycle with clean water | Constant light of indicators |
| Completion | The device is ready for use | Standard Mode |
☑️ Service checklist
After completing the cycle, it is recommended to do a couple of idle runs of water to make sure there is no aftertaste from the product. Regular maintenance extends service life pumps and heating element, keeping the coffee taste unchanged.
Troubleshooting and error codes
If the coffee maker stops working correctly, first of all, pay attention to the blinking indicators, which serve as a diagnostic tool. For example, the simultaneous flashing of the cup and steam lights often indicates the need for descaling or the presence of an air lock in the system. In this case, pumping the system through idle with the steam valve open helps.
Lack of pressure may be caused by a clogged mesh in the filter or by using a grind that is too fine. Check that the cappuccino maker spout rotates freely and that the divider holes are not clogged. Mechanical cleaning with a toothpick or a special needle often returns the device to functionality without calling a technician.
⚠️ Attention: If the indicators flash in "police car" mode (alternating flashing), this may indicate a critical electronic error or overheating, requiring service.
It is also worth checking the integrity of the O-ring on the holder; if it has lost elasticity or is torn, water will leak down the sides of the horn while cooking. Replacing this consumable is a simple procedure available to the user. Timely replacement of the seal prevents water from entering the electronic components under the horn.
The main reason for bad coffee in 90% of cases is not a malfunction of the machine, but incorrect grinding or old grain, so always start your diagnosis with the quality of the raw materials.
Frequently asked questions (FAQ)
Why does the Delonghi 685 coffee maker hum, but no coffee comes out?
Most likely, the grind is too fine or the coffee is pressed too hard. Try making the grind coarser or reducing the tamping force. Also check to see if the filter mesh is clogged.
How often does the water filter in this model need to be changed?
The standard life of a filter jug or cartridge is about 2 months or 50 liters of water, whichever comes first. If the water is very hard, it should be replaced more often.
Can I use ground coffee bags for single use?
Yes, the model supports standard E.S.E. tablets. diameter 44 mm. To do this, you need to use a special adapter insert that comes with the coffee maker, and do not tamp the coffee.
What does the flashing limescale warning light mean?
This is a signal that mineral deposits have accumulated in the system and a decalcification procedure is necessary. Ignoring the signal may result in decreased performance and damage to the thermoblock.
How to properly store the device if it is not used for a long time?
It is necessary to completely empty the water tank, drain the remaining water from the boiler through the steam tap and leave the device in a dry place with the top valve of the tank open for ventilation.