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Maintenance
9.4 Preventive maintenance
9.4
Preventive maintenance
9.4.1
Inspection
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.
9.4.2
Checklist for preventive maintenance work
Table 9-1
General checklist for preventive maintenance work
Maintenance
Clean the cabinet (exterior).
Clean the cabinet (interior).
Check the external connections.
Check the internal connections.
Perform inspection and visual in‐
spection.
Check the cooling system.
Check the spare parts.
96
Carried out by:
Owner
Siemens
service per‐
sonnel
Owner
Siemens
service per‐
sonnel
Siemens
service per‐
sonnel
Owner
Siemens
service per‐
sonnel
Frequency
As required
Annually
After one year, and ev‐
ery four years there‐
after
After one year, and ev‐
ery four years there‐
after
Annually
After 30,000 operating
hours
Annually
Comments
Visual inspection, clean if re‐
quired.
Visual inspection, clean if re‐
quired.
Inspecting the cable clamps and
screw terminals.
See the specifications in the Op‐
erating Instructions.
See the specifications in the Op‐
erating Instructions.
If necessary reorder spare parts.
SINAMICS SM120 6SL38855?B
Operating Instructions 12/2015
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