Step 2 in the manual says, "Raise the lever making sure that it has got to the end of its run.
Step 3: Introduce the electrical plug in the socket.
Step 4: Press the push button (The one that says "INT."), the resistance indicator lamp will light, wait until the group delivered water, raise totally the lever and wait until the lamp is switching off.
Its prob translated from Italian. The way I read it, Im supposed to...
2. Lift the lever (to ON position)
3. Plug it in,
4. Push the button which will make the light come on, and presumably water will come out of the group. I dont get why Im supposed the raise the already-raised lever... and why the light will go off.