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IMPORTANT - When switching on the appliance, the selection dial must be turned
to the vertical, central standby position. Otherwise, the water system cannot reach
the correct temperature for operation. In this case, the power button flashes with
an unusual high frequency.
IMPORTANT - The appliance is not suited for giving off large amounts of hot
water. The temperature of the water will drop significantly, with any additional
amount.
ERROR MESSAGES
The appliance may issue error messages during operation. In this case, various but-
tons on the console flash in an unusual way. Refer to the hints given in the chapter
‘Solving Problems’ for finding out the reason and resolve the problem swiftly.
OVERHEAT PROTECTION
The appliance is equipped with thermal cut-out switches, monitoring the pump, the
grinder, and the thermo-block of the group head. If this overheat protection system
has been triggered, the appliance switches off completely.
Unplug the appliance and leave the appliance cool down for about 30-60 minutes.
Thereafter, you can use the appliance again quite usual. If not, get in contact with
an authorized service centre for examination and repair.
AUTOMATIC SHUT-OFF
An automatic shut-off switches off the machine completely after approx. 30 minutes
of being idle. Simply press the power button to switch on the machine again.
IMPORTANT - Nevertheless, do not leave the appliance switched on uselessly. If
you do not need the machine for some time, switch off and unplug the machine.
This will save energy and keep a long lifetime of the heating block.
TIPS FOR BEST RESULTS
Preparing delightful coffee is an art you will learn quite easily using your new
»Design Espresso Advanced Barista«. In this chapter, various useful tips for getting
this aim in reach are given.
Taste and flavour of your coffee depend on a lot of essential constituents. Some are
the type, roast, and freshness of the coffee beans. Additionally, various other para-
meters can be influenced during preparation and extraction: the grind size, dosage
and tamping pressure as well as the extraction volume. Attempt to get the perfect
balance of sweetness, acidity, and bitterness.
Adapt the factors of your extracting method in small steps one by one to achieve the
taste you prefer. For your assistance, the pressure gauge of the appliance gives a
clue for finding the optimum settings and procedures. As a starting point, you should
use the defaults of the appliance. For your first steps, the double-wall filter baskets
make it easier to find the optimum combination of factors.
Selection and Storage of Coffee Beans
• It is best to grind coffee beans directly before the extraction. Aroma and taste
will fade quickly, when storing coffee powder for more than a week. Buy coffee
beans in small batches to reduce the storage time.
• Use the integrated grinder of the machine for grinding and measuring up the
dosage just before starting an extraction.
• Store coffee beans or coffee powder on a cool, dark place in a dry, air-tight
container. Using a vacuum sealer from Gastroback, you can vacuum seal your
coffee beans or powder in appropriate portions to preserve aroma and taste.
THE GRIND
• The grind size will influence the rate at which the water flows through the coffee
powder in the filter basket and, therefore, the taste of the espresso. The grind
size should be fine but not too fine. If the grind is too fine (looks like powder and
feels like flour when rubbed between fingers), the water will not flow through the
coffee powder even when under pressure. The resulting espresso will be dark
in colour and bitter in flavour. If the grind is too coarse, the water will flow too
quickly. The result will be lacking in colour and flavour (see also: ‘The Optimum
Extraction’).
• When purchasing already ground coffee, ensure that the coffee is suited for
espresso machines, as indicated on the packet.
• For adapting the grind size to your favourite taste, begin with a medium grind
size in a range, suited for espresso machines. This corresponds to the grind size
setting 8 (default value of the machine) for the grinder of the machine. Change
the settings in small steps to reach the desired optimum. It is normal that a few
attempts are needed for finding the correct grind size.
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