9.4.2 Checklist for preventive maintenance work
Table 9-1 Control Module: Checklist for preventive maintenance work
Maintenance Carried out by: Frequency Comments
Replace the AOP battery. Owner Siemens
service per‐
sonnel
When the relevant
message is output.
Display battery status using the
"AOP diagnostics" menu item.
Replace the UPS battery. Owner Siemens
service per‐
sonnel
When the relevant
message is output.
Relevant for option L53
Check the software. Siemens
service per‐
sonnel
After every parameter
modification, and ev‐
ery five years there‐
after
Test the insulation. Siemens
service per‐
sonnel
Every two years "Bender insulation" test mode
9.4.3 Visual inspections
9.4.3.1 Equipment for visual inspections
You require the following basic equipment to carry out the visual checks and maintenance
work:
● Mirror
● Torch
● Torque wrench for tightening screws
NOTICE
Contamination
Contamination and dirt can damage the device.
Visually inspect the equipment at least once per year. For more information, please refer to
the section "Visual inspections".
Dust deposits inside the cabinet unit must be removed at regular intervals (or at least once
a year) by qualified personnel in line with the relevant safety regulations.
Maintenance
9.4 Preventive maintenance
SINAMICS SM120 6SL38715
Operating Instructions 07/2015 87
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