The water hardness can be adjusted on a continu-
ous scale between 1 °dH and 30 °dH.
Level Display
German
Degree (°dH)
Degrees of
general hardness
(°dGH)
Parts per
million (ppm)
Indicator Strip number
of ‘reddish’ fields
Not active – – – –
Very soft water <3 <3 < 53.4 None
Soft water > 4 > 4 > 71 1
Hard water > 8.4 > 8.4 > 150 2
Very hard water > 14 > 14 > 250 3
Connecting milk
Your IMPRESSA creates fine, creamy, feather-light
milk foam with a perfect consistency. The most
important requirement for frothing milk is a milk
temperature of 39–46 °F (4–8 °C). We would
therefore recommend using a milk cooler or a
vacuum milk container.
T Remove the protective cover from the dual
spout.
T Connect the milk pipe to the dual spout.
T Connect the other end of the milk pipe to a
milk container or immerse it in a milk
carton.