Espresso Pressure Gauge; Steam Wand For Getting Hot Water And Steam - Gastroback Design Espresso Advanced Barista Bedienungsanleitung

ESPRESSO PRESSURE GAUGE

The pressure gauge at the group head indicates the water pressure at the portafilter
during extraction. Use this readings for deciding, if your espresso has been extracted
perfectly.
• Under extracted zone: The gauge pointer is positioned in the lower white zone
during extraction. The espresso has been extracted with insufficient pressure. This
occurs when the water flows too fast. Low pressure during extraction results is
an under-extracted espresso that is watery and lacks crema and flavour. Under-
extraction may occur, when the grind size is too coarse and/or an insufficient
amount of coffee powder is in the filter basket and/or the pressure applied duri-
ng tamping has been too low.
NOTE
The appliance performs a pre-infusion cycle, before applying high pressure. This
is for moistening the coffee powder first. During pre-infusion, the gauge pointer
should stay within the white lower third of the pressure range.
• Optimum extracted zone: With the gauge pointer positioned in the grey central
zone during extraction, the espresso will be extracted at the perfect pressure.
• Over-extracted zone: With the gauge pointer positioned in the red upper zone
during extraction the espresso is extracted with too much pressure. This occurs
when the water flows too slow. The result is an over-extracted espresso that is
very dark and bitter with an uneven crema. Possible reasons: the grind size is
too fine and/or there is too much coffee powder in filter basket and/or you
pressed too hard during tamping.

STEAM WAND FOR GETTING HOT WATER AND STEAM

The appliance can give off hot water and steam via the steam wand.
• Use the hot water function for diluting the espresso and getting other special
coffee drinks, for making other hot drinks (e.g. tea, cacao drinks), and for pre-
heating your cups and the portafilter.
• Via the steam function you texture milk: Use this function especially for making
latte, cappuccino or similar coffee drinks.
You control the steam wand functions via the selection dial at the left side of the
group head. The hot water indicator below the pressure gauge illuminates, when a
steam wand function is running.
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