3 Maintenance3.3.4. Vacuum System (optional)3HAC030005-001 Revision: -82© Copyright 2006 ABB. All rights reserved.3.3.4. Vacuum System (optional)GeneralThis section describes maintenance on the vacuum system, with interval 500 and 4000 hour.NOTE!Only use un lubricated air.DANGER!Turn off all electrical power, hydraulic and pneumatic pressure supplies to the robot!Also read the safety sections:• Safety risks related to pneumatic/hydraulic systems on page 18• Risks associated with live electric parts on page 20• Safety risks during installation and service work on robot on page 15Vacuum Systemxx0700000499A Air filter inlet.B Ejector UnitC Air filter inlet vacuum.D Swivel CupE Hose ClampContinues on next page