Miele CM 7750 Operating Instructions Manual page 87

If a descaling cartridge is not fitted, an
empty cartridge is fitted or an expired
cartridge is fitted, the machine needs to
be descaled regularly using the
maintenance programme.
the machine
The appliance will guide you through
the descaling process. Various
messages will appear in the display,
e.g. you will be prompted to empty the
drip tray or fill the water container.
You need 1 descaling tablet for the
descaling process. The process takes
approx. 12 minutes.
The coffee machine prompts you when
it needs to be descaled.
until the machine must be descaled: 50
appear in the display. The remaining
number of drinks that can be made
before descaling will appear in the
display after each drink.
 Confirm the message with OK.
When the number of remaining portions
reaches 0, the coffee machine will lock
out.
Descale the machine
display.
You can switch the coffee machine off if
you do not want to carry out the
descaling programme at this point. You
cannot make any drinks until the
machine has been descaled.
Descaling after prompt appears in
the display
Descale the machine
display.
Descaling cannot be cancelled once it
has started. It must be completed
through to the end.
Descale
Number of drinks
will appear in the
appears in the
 Touch OK.
The process will start.
 Follow the instructions in the display.
When Fill the water container to the 
symbol with descaling agent and lukewarm
water and place it in the machine
in the display, proceed as follows.
Creating the descaling solution
We recommend using Miele descaling
tablets for optimum results.
These have been specially developed
for use with Miele coffee machines and
prevent subsequent damage.
Other descaling agents, which
will
contain other acids besides citric
acid and/or other undesirable
substances, such as chlorides for
example, could damage the coffee
machine. Moreover, the descaling
effect required cannot be guaranteed
if the descaling solution is not of the
appropriate concentration.
Miele descaling tablets are available to
order via the Miele webshop or directly
from Miele (see the end of this booklet
for contact details).
Cleaning and care
appears
87