Only tip I can offer is if you take any covers off keep it connected to the mains (not on) so it is earthed. They have EEPROMS which can be temprimental from any static shocks, also run it from an anti surge if you don’t already.
I would give it a good blow out with canned air and use a light sewing machine oil or such on any phosphur bronze bearings and maybe some vaseline on any gears. Cleaning off any crap first.
Any roller bearing I would remove and put some WD40 on wiping of the excess after.
Sorry I can’t be more help than that.