Medela Symphony Mode D'emploi page 22

6. Preparing for pumping
i
Info
22
l Always close the lid when pumping.
The lid keeps the membrane cap pushed
down to prevent a loss of vacuum that
could occur if the membrane cap came
off.
7
Open the lid of the breast pump:
Press the oval button on the top of
the Symphony and lift the handle.
10
Close the lid.