Maintenance
6.2 Servicing inspections
A5E01083943A AB
76 Siemens AG Operating Instructions 2.02 1FW4
6.2.2 First service after installation or repair
Inspection items
After approximately 500 operating hours, at the latest after 1 year
● check, while the motor is running, that:
– the equipment conforms to the stated electrical characteristics.
– the permissible bearing temperatures are not exceeded.
– the smooth running characteristics and motor operating noise have not become
worse.
● check, while the motor is at standstill, that:
– The motor foundation has no indentations or cracks.
Further checks may be required in addition as a result of additional operating instructions or
in accordance with the plant-specific conditions. Any impermissible discrepancies or
changes found during the checks must be rectified immediately. [ID 56]
6.2.3 General inspection
Service criteria
After approximately 16,000 operating hours, at the latest after 2 years
● check, while the motor is running, that:
– the equipment conforms to the stated electrical characteristics.
– the permissible bearing temperatures are not exceeded.
– the smooth running characteristics and motor noise in operation have not deteriorated.
● check, while the motor is at standstill, that:
– the motor foundation has no indentations or cracks
– the motor is aligned within the permissible tolerance ranges.
– all of the mounting bolts for the mechanical and electrical connections are tight.
– the winding insulation resistances are sufficiently high.
– if the bearings are insulated, the insulation has not been bridged.
– the cooling system is in good condition, i.e. that the pressure drop (inlet/outlet) is not
significantly higher.
– cables and insulating parts and components are in good condition and are not
discolored.
[ID 665]
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