There is a forcefield on front of the lift.

Hint 1 of 6:

It needs power to run.

Hint 2 of 6:

Turn off the power in the power room.

Hint 3 of 6:

Now the lift doesn't work, but at least you can get to it.

Hint 4 of 6:

You need to deactivate the forcefield now, so it won't come back when you
bring the power back.

Hint 5 of 6:

You need an axionic flux inverter.

Hint 6 of 6:

There is one in the storage area.