4.3.2 Maintenance schedule
Scheduled and non-predictable maintenance
The robot must be maintained regularly to ensure proper function. The maintenance
activities and intervals are specified in the table below.
Non-predictable situations also give rise to inspections of the robot. Any damage
must be attended to immediately.
Life of each component
The inspection intervals do not specify the life of each component. Values for these
are specified in the section Expected component life on page 90
Maintenance schedule
Reference
Every 20,000 hours
i
Every 100 km
Every 36 months
Every 12 months
Regularly
Maintenance activities
Cleaning the IRB 920 on page 108
xCleaning the robot
Check for abnormal wear or
contamination.
xInspecting the robot
Inspecting the robot cabling on
page 93
x
ii
Inspecting the robot harness
Inspecting the information labels
on page 91
xInspecting the information labels
Inspecting the ball screw spline
unit on page 94
xInspecting the ball screw spline unit
Inspecting axis-3 mechanical
stops on page 97
xInspecting the mechanical stop
Inspecting timing belts on
page 100
xInspecting the timing belt
Lubricating the ball screw spline
unit on page 106
xLubricating the ball screw spline unit
Replacing the battery pack on
page 105
x
iii
Replacing the SMB battery pack
Recommended to robots without
the SafeMove option. See
Operating manual - OmniCore.
x
v
Running the Brake Check routine
iv
Recommended to robots with
the SafeMove option. See
Application manual - Functional
safety and SafeMove.
x
v
Running the Cyclic Brake Check routine
iv
xOverhaul of complete robot
i
Operating hours counted by the DTC = Duty time counter.
Continues on next page
88 Product manual - IRB 920
3HAC075721-001 Revision: C
© Copyright 2022 ABB. All rights reserved.
4 Maintenance
4.3.2 Maintenance schedule
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