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Maintenance
9.1 Safety instructions for maintenance
Damage caused by foreign bodies
If foreign bodies are left in the device after installation and maintenance work, this can cause
damage when the device is switched on.
● Before switching on, check as to whether there are any foreign bodies in the device.
Damage due to contamination and dirt
Contamination and dirt can damage the device.
● Visually inspect the equipment at least once per year. For more information, please refer to
● Dust deposits inside the cabinet unit must be removed at regular intervals (or at least once
Note
The actual intervals at which maintenance procedures are to be performed depend on the
environmental and operating conditions. Define maintenance intervals that reflect your plant-
specific environmental and operating conditions and meet your availability requirements. When
doing so, take the prescribed maintenance intervals into consideration, as well as the
instructions for repairing and replacing installed components.
Note
Siemens offers its customers support in the form of a service contract. For further details,
contact your regional office or sales office.
Note
Inform the manufacturer about each maintenance job that has been carried out and about each
spare part replacement for the purposes of a reliability analysis.
136
Remove any foreign bodies.
the section "Visual inspections".
a year) by qualified personnel in line with the relevant safety regulations.
SINAMICS SM150 6SL3845-7NN46-7AA2
Operating Instructions Rev.201910281345 EXAMPLE
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