Determining And Adjusting The Degree Of Water Hardness - Jura IMPRESSA S9 One Touch Classic Manual

2 Preparing and using for the first time
Determining and
adjusting the degree
of water hardness
Level Display German
Degree (°dH)
Not active
Very soft water
Soft water
Hard water
Very hard water
16
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.
Degrees of general
hardness (°dGH)
–
<3 <3
> 4 > 4
> 8.4 > 8.4
> 14 > 14
E However, if you are using the CLEARYL filter cartridge and have
activated it, you will not be able to adjust the water hardness.
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 discoloration of the Aquadur® test strip and the
description on the packaging.
You can now adjust the water hardness.
Example: To change the water hardness from
proceed as follows:
Precondition:
T Open the cover of the Rotary Switch.
k T Keep the Rotary Switch pressed until
appears.
g T Turn the rotary switch until
displayed.
k T Press the Rotary Switch to enter the program item.
16°dH
g T Turn the Rotary Switch until
Parts per
million (ppm)
– –
< 53.4
> 71
> 150
> 250
is displayed.
COFFEE READY
Indicator Strip number
of 'reddish' fields
–
None
1
2
3
to
16°dH 25°dH
MAINTENANCE
HARDNESS 16°dH
is displayed.
25°dH
,
is