Vibiemme Domobar Junior - Manual (Page 8)

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5. First use of machine
For this first use of the Vibiemme Domobar espresso machines, 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 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 of water from the Vibiemme Domobar espresso
machines.
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 be
pushed out of the Steam Wand with some force when the Steam Valve is first opened after the Steam
Valve 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. Coffee boiler temperature adjustment
The thermostat controls Coffee boiler temperature by sensing the temperature in the Coffee boiler.
Accessing the thermostat adjustment is simple. Simply remove the Cup Warming Tray and beneath
that you will see a perforated panel with a with a symbol +/- around: fit a screwdriver, then turn to adjust
the boiler temperature:
CLOCKWISE RAISES THE TEMPERATURE
COUNTERCLOCKWISE LOWERS THE TEMPERATURE
Temperatures on Domobar Junior 2B are mechanically set. By acting on the thermometer adjusting screw
you can change values by steps of 3 °C ( approx.). The screw on its clockwise end of stroke corresponds
to 0°C, while the counterclockwise end of stroke corresponds to 128°C. The Vibiemme Domobar Junior
2B is set by manufacturer at 95°C.