What is something demanded of maintenance is the cutter they are cleaned with us about 1x per year (only scraping down with carpet knife the whole thicker adhesive layers, and then release the residual glue with WD40, DONE)
About this unit can man also (finally) Use of a PSU, however, the original PSU bit expensive sold (25), alternatives are hard to find, is information not be given!
You need an AC adapter with 9V and with a hollow plug D = 5.5mm ;; Interior and d = 2.5mm
The special feature is that that is outside + and minus - inside /// + - (o -
MFG
DE-Rocket