Nespresso EF 451 C 111 Service Manual page 40

Observe the safety
instructions on the
descaler package.
Use a container with a
capacity of 1 l min.
40
M A I N T E N A N C E
3) Fill the water tank with 0.5 L of potable
water and add 1 Nespresso descaling
liquid.
5) To enter the descaling mode, while the
machine is turned on, press both the
espresso and lungo button for 3 sec-
onds.
Both LEDs blink.
Citiz service manual
4) Place a container (min. volume 1 L)
under the coffee outlet.
6) Press the lungo button and wait until
the water tank is empty.