Y HYD SYS ENG PUMP and ELEC PUMP simultaneous ops.

[igorsulim]

Hello everybody! Is it possible to switch ELEC PUMP on when ENG PUMP is operating? Can it cause Y ELEC PUMP OVHT or any other Y SYS malfunction? For example, can we switch ELEC PUMP in flight and how does system work in this configuration? There is no any description of this configuration in FCOM...
Best regards to everybody!