Bought used with no manual. Need info on proper blade cleaning and motor servicing. Made in West Germany so even the power cord plug shape is not standard (jerry rigged computer power cable in use). Specs would be a big help to replace parts if needed. If this model’s manual not available, any manual for a similar type or even make of heavy duty industrial/military shredder may be some help. Other identifying marks on the machine: Shredex Pirhana Top Secret LR 24171 9A 110-115V 60Hz. Thanks.