The electric pump starts automatically when one of the engines is started. It then operates continuously until the two engines are stopped.
Blue ELEC PUMP pb-switch
”AUTO” ( pb switch in )
● In flight:
- with the BLUE ELEC PUMP pushbutton at AUTO and AC power available, the electric pump operates.
● On Ground:
- the electrical pump is energized, provided one engine is running ,or
- the Blue Pump OVRD pb switch on the 50VU is pushed in.
”OFF”( pb switch out )
● OFF illuminates white
● the pump is de-energized
● deactivates the FAULT LT except at overheat-conditions.