9.3 Preventive maintenance
The purpose of an inspection is to ascertain and evaluate the current status of the equipment.
An inspection mainly comprises visual checks. Inspections should be carried out based on a
schedule that meets the needs of the special environmental conditions at the location of use.
The following servicing and inspection instructions are used as the basis for regular inspection
of the equipment.
9.3.1 Checklist for preventive maintenance work
Maintenance work Carried out by Frequency Comments
Check the cooling system Operating
company
After 30 000 operating
hours
Check the fans
Clean the cabinet (exterior) Operating
company
As required Visual inspection, clean if
required
Clean the cabinet (interior) Siemens serv‐
ice personnel
Annually Visual inspection, clean if
required
Check the electrical connec‐
tions (external power and
monitoring connections)
Operating
company
After one year, and ev‐
ery four years thereafter
Check the internal connec‐
tions
Siemens serv‐
ice personnel
After one year, and ev‐
ery four years thereafter
Carry out an inspection and
visual check
Siemens serv‐
ice personnel
Annually See the specifications in
the Operating Manual
Check the software Siemens serv‐
ice personnel
After every parameter
modification, and every
five years thereafter
Check the replacement parts Siemens serv‐
ice personnel
Annually
Check the options Siemens serv‐
ice personnel
See the specifications in
the Operating Manual
9.3.2 Visual inspections
9.3.2.1 Equipment for visual inspections
You require the following basic equipment to carry out the visual checks and maintenance
work:
● Mirror
● Flashlight
● Torque wrench for tightening screws
Maintenance
9.3 Preventive maintenance
SINAMICS GL150 6SL38503UM114PA0Z
106 Operating Instructions 04/2017