VBM brewing group must be considered as the alter ego of Faema historical group; both conceived by Carlo Ernest Valente, they can be considered as twins.
The intuitions providing the guidelines for VBM-E61 project went together with the principles of the first mathematical models about espresso process, even now considered the golden rule for the perfect Italian Espresso: to get a certain volume of drink (30 ml), in a certaine time (30 seconds), with certain temperatures/pressures values (90 °/9bar), by grinding and pressing (20 kgf) a certain quantity of coffee powder (6,5 gr.).
Among all intuitions making VBM-E61 group the most popular brewing system, there were:
THERMOSIPHONIC CIRCULATION principle:
allowing a more precise temperatures control while coffe is in the group.
MECHANIC PRE-INFUSION principle:
so that coffee ground get wet just before the extraction, amplifying in this way both body and flowery taste of coffee.
VBM-E61 group never changed throughout its history; anyway the more and more precise determination of the espresso variables values, the growing availability of scientific data on coffee, the using of electronic controls of temperatures/pressures and the instant electronic grinding will of course require some updating to the project, despite its incomparable intuition.
2B TECHNOLOGY (MULTIBOILER)
Multiboiler technology has a certainly more limited application compared to its direct competitor, the HX version; anyway, the multiboiler is moving onward and upward both for machine operators and for public.
VBM was the first manufacturer able to successfully combine the E61 group with Multiboilers technology and is now the only company improving this technology.
With regards to functioning, in comparison with the HX technology, the thermosiphonic circulation principle and pre-infusion remain the same; anyway, the need of:
- 1.A more precise control on temperatures during brewing phase
- 2. Independence of steam power increase from brewing temperatures
- 3. electronic check of the single shots parameters
brought us to introduce the Multiboiler system instead of the traditional boiler with heater exchanger system.
With regards to the hydraulic circuit, this is the same as in the traditional heater exchanger system (HX): espresso brewing boilers (B) are connected brewing group (GH) through an upper circulation tube (IT) and a lower circulation tube (OT): this can guarantee the water thermosiphonic circulation for the brewing group heating even in the idle phase.
Brewing boilers (B) are totally fill in with water and the net pressure (or pump pressure when the group is working) guarantees their immediate filling (saturation) – unlike the HX technology system.
Group temperature adjustment is made through a probe (P), driven by a display by means of a control unit: the operator can set the desired temperature value for each group – unlike the HX technology system.
Water and steam boiler (independent of the brewing boilers), always contains a part of water and steam in order to produce steam and tea water. The water/steam ratio is adjustable as you want – unlike the HX technology system – no need to worry about how this adjustment influence brewing temperature, since brewing boilers are totally independent of the hydraulic circuit.
TOTALLY INDEPENDENT STEAM PRODUCTION
SEPARATE PUMP GAUGE AND BOILER GAUGE
STEAM BOILER: PICKLED COPPER BOILER 0,75 Lt. CAPACITY WITH 1200 WATT ELEMENT
COFFEE BOILER: PICKLED COPPER BOILER 0,5 Lt. CAPACITY WITH 600 WATT ELEMENT
SMALL OVERALL DIMENSIONS
TOTAL FLEXIBILITY IN COFFEE BREWING:
IT IS RECOMMENDED FOR EXTRACTION OF SINGLE ORIGIN COFFEE AND 100% ARABICA COFFEES
BEST QUALITY-PRICE RATIO IN ITS RANGE
SMALL OVERALL DIMENSIONS: 25x45x42 cm
CHROME OUTER TAPS WITH SCREW CONTROL
360° ADJUSTABLE STAINLESS STEEL STEAM LANCES
2 HOLES STEAM LANCE END: 1,5MM DIAMETER; 30° INCLINATION
STEAM BOILER 0.75L
COFFEE BOILER 0.5L
POWER OF ELEMENT 1600W
NUMBER OF PORTAFILTERS: 2
SPOUT TYPE: SINGLE & DOUBLE
BASKET DIAMETER: 58mm
OPERATING PRESSURE: 8-9 BAR
MANUAL PRESS REGULATION
PRESSURE RELIEF VALVE
BOILER TYPE: NICKEL PLATED COPPER
NUMBER OF BOILERS: 2
BREW GROUP MATERIAL: CHROME BRASS
WATER TANK CAPACITY: 1.7L
TANK REMOVAL: YES
ABLE TO PLUMB IN EXTERNALLY: NO
TANK MATERIAL: PLASTIC
CONSTRUCTION: STAINLESS STEEL
CHROME OUTER TAPS WITH SCREW CONTROL
WARRANTY: 12 months back to base