Water Hardness - DeLonghi La Specialista ARTE EC915X Manual Del Usuario

10. WATER HARDNESS

10.1 Water hardness
The descale light (B3) comes on after a period of time established according to water hardness. The machine can also be pro-
grammed according to the actual hardness of the water supply in the various regions, in which case descaling may be required less
frequently (see "7. Menu settings" -
1. Remove the "TOTAL HARD-
NESS TEST" indicator paper
(C5) from its pack.
).
1
2. Immerse the paper
completely in a glass of
water for one second.
2
3. Remove the paper from
the water and shake
lightly.
After about a minute, 1, 2, 3, or 4 red squares form, depending
on the hardness of the water. Each square corresponds to one
level.
Total Hardness Test result
16
4. Set the appliance as indi-
cated in section "7. Menu
settings".
3
Button (B7) Level
soft water
medium
very hard
1
2
water
3
hard or
water