Jura IMPRESSA F7 - Water Hardness Measurement

13
1 Preparing and using for the first time
T Fill the water tank with fresh, cold water and reinsert the
tank.
SWITCH OPEN
The arrow on the switch lights up.
T Place a receptacle under the fine foam frother and under the
coffee spout.
 j T Turn the switch to them position.
SYSTEM FILLING, the system fills up with water.
SWITCH CLOSE
 h T Turn the switch to the °position.
The illuminated arrow on the switch goes out.
SYSTEM FILLING, the system fills up with water.
HEATING, the machine heats up.
RINSING, the system is rinsed. The rinse stops automat-
ically.
READY appears on the display. Your IMPRESSA is
ready for use.
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 1second) under flowing water.
Shake off the water.
T Wait for about 1minute.
T You will then be able to read the degree of water hardness
from the discoloration of the Aquadur® test strip and the
description on the packaging.
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
Determining the water
hardness