Gastroback Design Espresso Advanced Barista Bedienungsanleitung Seite 128

Problem
The pump continues to
operate, the steam is very
wet, the steam wand
leaks.
The coffee does not flow
from the group head,
OR
the coffee starts drip-
ping too late (after 12
seconds) or too slowly,
OR
the coffee is very bitter
and dark.
EN
128
Possible Reasons
Too much coffee powder
in the filter basket.
The coffee powder has
been tamped with too
much pressure.
The sealing ring in the
group head is worn out or
damaged.
You are using an unsuited
type of water.
The water tank is empty
or not inserted correctly.
The steam function or
hot water function is acti-
vated.
The water system is over-
heated.
The coffee powder is too
fine.
The Easy Solution
Ensure to leave sufficient space between the tamped
coffee powder and the rim of the filter basket (2-3mm).
Scrape off surplus coffee powder (see: 'Operation / Tam-
ping the Coffee Powder'), then tamp the coffee powder
and wipe the rim of the portafilter and filter basket clean
again.
Do not apply too much pressure when tamping the coffee
powder in the filter basket (see: 'Tips for Best Results').
Get in contact with an authorized service centre for exa-
mination and repair. Do not poke in the group
head with any hard or sharp-edged objects.
For cleaning the group head, only use a soft cloth or
SOFT nylon brush.
Flush the water system with cold tap water or low-
mineral, non-carbonated bottled water (see: 'Tips for Best
Results / The Water Quality' and 'Before First Use /
Flushing the Water System').
Fill a sufficient amount of water into the water tank
(between MIN and MAX filling line). Do not let the
machine pump the water tank completely
empty.
Push the water tank down at the back of the appliance
until the water tank lid levels up with the top of the
appliance (see: 'Operation / Filling the Water Tank').
Turn the selection dial to the vertical standby position.
For producing steam, the appliance heats the water sys-
tem to the significantly higher steam temperature. Wait,
until the extraction temperature is reached again. The
extraction starts automatically.
Only use coffee powder suited for espresso machines
(see: 'Tips for Best Results').