There's nothing in the manual, but there IS a technical note about sensor cleaning on the R-D 1 support website. It's pretty much as you described, but there is one trick:
1) Power off the camera and insert a freshly-charged battery.
2) This is the trick --
remove the memory card.
3) Turn the camera on, set the shutter speed to B, lock open the shutter with a locking cable release, and clean away.
The reason for the trick in step 2: Leaving the memory card out tells the camera NOT to energize the CCD sensor when it powers up. With the sensor de-energized, Epson says, there's no risk of it building up a static charge that would make dust more difficult to remove.
Incidentally, in case you're wishing your R-D 1 had a built-in dust removal system like all the cool DSLR kids have now, get your eyes opened by reading
this article (click) on the Hungarian PixInfo website. Basically, PixInfo has done something no other website has dared to do (possibly for fear of annoying camera manufacturers who tout their dust-removal features): they exposed several DSLRs to an artificially created, uniformly dusty environment, then operated the dust-removal systems repeatedly.
Although they give the nod to Olympus' system as being marginally more effective than others, the conclusion you can't help but draw if you read their article and examine their sample images is that
NONE of the systems work worth a darn!
