ABB OmniCore IRB 6720 Product Manual

Inspecting the evacuation holeNoteActionDANGERTurn off all:• electric power supply• hydraulic pressure supply• air pressure supplyto the robot, before entering the robot workingarea.1WARNINGHandling gearbox oil involves several safety risks,see Gearbox lubricants (oil or grease) on page 30.2xx2300001603Do a leakage check of the sight glass/evacuationhole of each motor.If any oil is available on the sight glass or if anyoil has been spilled out from the evacuation hole,replacement of the motor is recommended.NoteIf oil is present in the evacuation it is an indicationthat the primary seal of the motor is leaking. Asecondary seal after the evacuation is keepingthe oil out from the motor, but it is still recommen-ded to replace the motor at a suitable timing if oilis present in the evacuation.3Replacing of motors is describedin the repair chapter Motors onpage 353.Product manual - IRB 6720 1073HAC085697-001 Revision: C© Copyright 2023 ABB. All rights reserved.4 Maintenance4.3.1 Inspecting the motor sealContinued