NABO GSI 1500, Instruction Manual, Page: 54 / 112

Adjusting salt consumption
Table of Water Hardness Level Settings
If the hardness of the water you use is above 90 dF (French hardness) or if you are using well
water; you are recommended to use filter and water refinement devices.
NOTE: Hardness level is adjusted to level 3 as a factory setting .
Open the
testing
strip. Run
water
through
your tap
for 1
min. Keep the
testing
strip in
water for 1
sec. Shake the
testing strip
after taking it
out of water. Wait for
1 min. Make your machine’s water hardness
setting according to the result obtained
through the testing strip.
Water
hardness
level German
hardness
dH French
hardness
dF British
hardness
dE
Hardness Level Indicator
1
0-5
0-9
0-6
L1 is seen on display.
2
6-11
10-20
7-14
L2 is seen on display.
3
12-17
21-30
15-21
L3 is seen on display.
4
18-22
31-40
22-28
L4 is seen on display.
5
23-31
41-55
29-39
L5 is seen on display.
6
32-50
56-90
40-63
L6 is seen on display.
1 6
Testing strip
The washing effectiveness of your machine depends on the softness of the tap water. For this reason,
your machine is equipped with a system that reduces the hardness in mains water supply. The
washing effectiveness will increase when the system is correctly set. To find out the water hardness
level of water in your area, contact your local water board or determine water hardness level by using
the test strip(if available).