Just received a pair of White 4400s from a long trip across the Pacific. I've switched to use with 230 volt mains via the switch on the rear. But before I put power to them is that all that needs doing?

In the past when I've switched components for use with 240 volts here in AU, a different rated fuse was required. I can't see any mention of this in the manual, so I'm assuming that it's not required here.
(These have the input transformer option installed in the back.)

Am I good to go?