ECM Technique V PID

The ECM Technika V PID lever coffee machine is a very beautiful, elegant and quiet coffee machine with a rotary pump. It has captivating technology and true elegance. It is a model with professional parameters - Heat Exchanger system, quick opening valves, hot water/steam, professional rotary pump and patented ECM head E61. A large-capacity stainless steel boiler with PID temperature control contributes to thermal stability. ECM benefits from many years of experience and expertise, which are very important in the production of coffee machines and grinders. Their sensitivity is in the detail, so each instrument really grabs your attention. At the same time, high quality components are used, which guarantees a long service life of the device. You can also optionally connect the rotary pump coffee machine directly to the water supply and, if necessary, to the waste.

E61 head and boiler, professional size (58 mm)

The E61 head is connected to the water circuit (boiler), the water in the boiler then circulates through the E61 head chamber. The head is thus heated by the water from the espresso boiler and thus helps to stabilise the temperature during extraction. The technology is one of the most widely used technologies today. A boiler is a container of a certain volume of water. The boiler can be heated actively by its own heating element or passively by another heat source. The larger the boiler volume and the more precise the temperature control technology, the more stable the espresso water. Water temperature control in the boiler is most often provided by a thermostat, electronic thermostat, preset or electronically, i.e. PID control. As for the 58mm dimension, it's not a completely accurate indication of the size of the head itself. The professional head and the inner diameter of the lever are slightly larger, 60 mm. However, for every barista, the most important figure is the dimension that designates the frother, which in this case is the 58 mm - that is why these types of coffee machines are known as professional head 58.

Hot water/steam quick valves and three-way valve

Hot water/steam quick valves are a faster and for some a more convenient alternative to rotary valves. The quick release valves can be opened only partially by holding or moved to the outermost position and opened to the maximum by a quick movement. It is quick and comfortable to use. The three-way valve is a very important technical element in the equipment of a coffee machine. It opens/switches between the following paths - the hot water source for the coffee, the head of the coffee machine and the waste. When the coffee dispenser is switched on, the water supply to the head of the coffee machine is opened, the path to the waste is closed. When the coffee dispensing is switched off, the path between the head of the coffee machine and the waste is opened and the water source is closed. Thanks to this valve, the pressure in the head of the coffee machine is released after coffee extraction and the excess water is drained to waste. Based on this principle, it is also possible to carry out the correct maintenance of the coffee machine, the backflush.

Water tank, extraction time, shot timer

All home coffee machines have a water tank. It is recommended to insert a suitable water filter (softener) into the water tank. It is recommended that the water tank is thoroughly flushed at regular intervals. Domestic coffee machines with a rotary pump usually have a connection to the water supply in addition to the water tank, so it is possible to switch (mechanically or electronically) between the water source of the tank and the fixed connection. An important parameter during coffee preparation is the extraction time, i.e. the time of contact between coffee and water. Generally, the extraction time for espresso is between 20 and 30 seconds. When making espresso from lighter roasted coffee (new roasting trends), the extraction time can vary between 30 and 40 seconds. It is advisable to keep track of the extraction time during espresso preparation; more equipped coffee machines with a display have this timer, making it very convenient for the barista to keep track of the time.

Rotary pump

The rotary pump is used in professional coffee machines and in the higher class of home coffee machines. It is powered by a robust electric motor and, as the name suggests, works on the principle of rotation. It is possible to set the desired pressure directly on the pump using the bypass screw. The calibration screw is usually located outside the body of the coffee machine and the user can conveniently calibrate the pressure. Calibration is done by inserting a blank filter (as in backwash) into the lever and switching on the water discharge. The pressure gauge displays the currently set pressure, which you can decrease or increase by turning the screw. It is usually set at 9 bar. The rotary pump has a very quiet and refined operation. The rotary pump coffee maker can be connected directly to the water supply line, but when connecting to the water supply line, it is strongly recommended to use a suitable water filtration between the water source and the coffee maker. Home coffee machines with a rotary pump usually have a water reservoir, so it is possible to switch the water source between the reservoir and the fixed connection.

2 circuits dependent - HX (Heat Exchanger), heat exchanger, PID temperature control with display

The coffee machine with the HX boiler system, i.e. the heat exchanger, allows very comfortable operation when preparing milk drinks (whipping milk). It is possible to brew espresso and whisk milk at the same time. Steam is immediately available without waiting. HX works in such a way that you have 2 circuits and the heating element is only in one of them - in the service boiler. The espresso circuit does not have its own heating element and the water in this circuit is heated by the other circuit (service boiler). The espresso circuit actually goes through the larger service boiler that heats it. Only the service boiler can be regulated. If you increase the temperature in the boiler (e.g. you want a stronger steam), this will also directly affect the temperature of the water in the espresso exchanger/circuit. The target temperature can be changed on the display. PID control is one of the most widely used algorithms for precise control of the controlled variable. Since the explanation of this algorithm is more complex and is widely described in the literature.