Nespresso EF 451 C 111 - Test Run

Citiz service manual
106
FUNCTION TESTS
9.4.2 Test run
9) Connect mains cable.
10) Start coffee machine.
11) After heating up, press the espresso
button.
12) Open the valve and let the water flow
for approximately 10 sec out of the
drain hose.
13) Close the valve completely. The pres-
sure stabilizes after increasing briefly
between 16-19 bar (pressure check).
The pressure increases slowly with
increasing temperature. Should the
pressure exceed 23 bar, switch off
the coffee machine and release the
pressure by opening the valve.
9.
10.
12. / 13.
10 sec
11.
For better visibility
use a flashlight.
14) Check all connections under pressure
for audible and visible leaks.
Do not run the pump for more
than 50 sec with the valve closed.
max. 50 sec
14.