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Vibiemme VBM Domobar Junior HX Manual

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5. First use of machine
For this first use of the Vibiemme Domobar espresso machine, once the pressure is above about 0.5 you
should flush the boiler to be sure that the machine is working properly. Place a suitable container (like a
heat-resistant glass measuring cup or stainless steel steaming pitcher) under the hot water spout and
carefully open the hot water valve. Water should pour out and the pump should start. Pump out about
6 ounces and then close the hot water valve. Repeat this two or three times over the next five or ten
minutes, and then check the reservoir level.
WARNING: The water dispensed as described above is hot enough to cause serious burns. Use
caution whenever dispensing or disposing water.
After an additional five or ten minutes of warm-up time, test the steam function. Place a vessel under
the steam wand and slowly open the Steam Valve. Steam should come from the Steam Wand and
the boiler pressure should drop slightly. After a few seconds, close the Steam Valve. It is normal for
some water to spurt out of the Steam Wand when the Steam Valve is first opened after it has been
closed for some time.
WARNING: Steam can easily cause deep and nasty burns. The metal Steam Wand gets very hot.
Always move the Steam Wand by holding the rubber sleeve and take great care whenever using
the steam function.
When using the Steam Wand, the pump may occasionally operate on its own. The steam comes off the
top of the main boiler where it is “stored” all the time, and the pump will only run when the water level
drops to a point determined by the depth of the water-level sensing wire.
Now it’s time to wait!
We mentioned in the other manual that patience is a virtue when it comes to making espresso and here
is our first example. The boiler, that huge brass grouphead, the portafilter, and all the related metal parts
need to come up to temperature. As the boiler comes up to temperature, hot water will circulate through
the system, helping to speed things up, but plan on waiting about twenty or thirty minutes before the
machine is ready for use.
6. Pressurestat Adjustment
The pressurestat controls temperature ( pressure) by sensing the pressure in the Steam boiler. Accessing
the pressurestat adjustment is simple. Simply remove the Cup Warming Tray and beneath that you will
see a perforated panel with a black plug. Remove the plug and fit Pressuresta adjustment knob as
shown here then turn the knob to adjust the boiler temperature:
CLOCKWISE RAISES THE TEMPERATURE*
COUNTERCLOCKWISE LOWERS THE TEMPERATURE*
* for further information on how the increase (decrease) of the pressure effect the brew temperature, see the HX
system guide chapter 3 – How it works -
… 8 …


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