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