Solution

To replace electro valve with water pump (in ovens with optional predisposition to pump), follow 

the steps listed below: (see picture below for number indication)

1. Remove the back cover from oven.
2. Disconnect the wiring cables from the electro valve
3. Disconnect water tube (3) from the electro valve, pressing and keeping the edge of black linking pressed.
4. Unscrew the electro valve from the oven frame.
5. Fix the pump (1) to the frame with the appropriate support (2) and the two screws (4) included.
6. Connect cables from electro valve to the pump.
7. Connect tubes from electro valve to the pump.
8. Connect the tube(6) with filter and stabilizer to pump apron(7).
9. Replace the back cover.