16
1 Preparing and using for the first time
E You can interrupt rinsing of the filter at any time by pressing
any button. Press the Maintenance button c to continue rins-
ing of the filter.
E The water may be slightly discoloured. This is not harmful to
health and does not affect the taste.
Rinsing of the filter stops automatically after approximately
500 ml. The machine heats up.
COFFEE READY appears
on the display. The filter is activated.
E If you are using the CLARIS Blue filter cartridge and have acti-
vated it in programming mode, you will not be able to adjust
the water hardness.
The harder the water is, the more frequently the IMPRESSA needs to
be descaled. It is therefore important to adjust the water hardness.
The water hardness can be adjusted on a continuous scale between
1° dH and 30° dH. It can also be deactivated, which means that the
IMPRESSA will not let you know when it has to be descaled.
You can find out what the water hardness is by using the Aquadur®
test strip supplied as standard.
T Hold the test strip briefly (for one second) under flowing
water. Shake off the water.
T Wait for about one minute.
T You will then be able to read the degree of water hardness
from the discolouration of the Aquadur® test strip and the
description on the packaging.
You can now adjust the water hardness.
Example: Proceed as follows to change the water hardness from
16°dH to 25°dH.
Precondition:
COFFEE READY is displayed.
k T Press and hold the Rotary Switch until
MAINTENANCE
appears on the display.
g T Turn the Rotary Switch until
HARDNESS 16°dH is dis-
played.
Determining and
adjusting the water
hardness
Determining the water
hardness
Adjusting the water
hardness
