Failure to oil the cutting cylinders every 30 minutes of continuous use voids the warranty on the gears.
When finished, press the master switch to OFF . Troubleshooting and Maintenance Common Issues & Fixes Ativa 12 Sheet Cross Cut Shredder MD1250 - Office Depot
Locate the master power switch on the back of the unit and press it to the ON position.
The manual explicitly prohibits shredding the following materials to maintain warranty validity: