Test Run - Nespresso Maestria EF 285 Service Manual

For better visibility
use a flashlight.
122
F U N C T I O N T E S T S

9.4.2 Test run

9) After heating up, set Lungo push/turn
control to "3" and push button.
10) Open the valve and let the water flow
for approximately 10 sec out of the
drain hose.
11) 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.
12) Check all connections under pressure
for audible and visible leaks.
Do not run the pump for more
than 50 sec with the valve closed.
Maestria / Gran Maestria service manual
10 sec
10. / 11.
3
9.
max.
50 sec
12.