Purging The Group Head - Gastroback 42636 Bedienungsanleitung

der and feels like flour when rubbed
between fingers), the water will not flow
through the coffee even when under
pressure. The resulting espresso will be
OVER EXTRACTED, dark in colour and
bitter in flavour.
If the grind is too coarse the water will
flow through the ground coffee in the
filter basket too quickly. The resulting
espresso will be under extracted lacking
in colour and flavour.
COFFEE DOSE AND TAMPING
• Wipe coffee basket with a dry cloth.
• If using Single Wall filter baskets,
grind just enough coffee to fill the cof-
fee basket. You may need to experi-
ment with how long the grinder needs
to run to achieve the correct dose.
• Tap the portafilter several times to dis-
tribute the coffee evenly in the filter
basket.
• Tamp down firmly (using approx.
15-20kgs of pressure). The amount of
pressure is not as important as consi-
stent pressure every time.
• As a guide to dose, the top edge of
the metal cap on the tamper should
be level with the top of the filter bas-
ket after the coffee has been tamped.
TRIMMING THE DOSE
• Insert the Razor™ dosing tool into the
coffee basket until the shoulders of the
tool rest on the rim of the basket. The
blade of the dosing tool should pene-
trate the surface of the tamped coffee.
• Rotate the Razor™ dosing tool back
and forth while holding the portafil-
ter on an angle over the knock box
to trim off excess coffee grinds. Your
coffee filter basket is now dosed with
the correct amount of coffee.
• Wipe excess coffee from the rim of
the filter basket to ensure a proper
seal is achieved in the group head.
NOTE:
If the extraction is too fast, make the
grind finer & repeat above steps.
If the extraction is too slow, make the
grind coarser and repeat above steps.

PURGING THE GROUP HEAD

Before placing the portafilter into the
group head, run a short flow of water
through the group head by pressing and
holding the 1 CUP button. This will pur-
ge any ground coffee residue from the
group head and stabilise the tempera-
ture prior to extraction.
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