Maintenance - Siemens SINAMICS S120 Equipment Manual

Maintenance and Servicing

11.2 Maintenance

11.2 Maintenance
The devices comprise mostly electronic components. Apart from the fan(s), therefore, they
contain hardly any components that are subject to wear or that require maintenance or
servicing. Maintenance is intended to ensure that the equipment remains in the specified
condition. Dirt and contamination must be removed regularly and parts subject to wear
replaced.
The following points must generally be observed.
Cleaning
Dust deposits
Dust deposits inside the device must be removed at regular intervals (or at least once a
year) by qualified personnel in line with the relevant safety regulations. The unit must be
cleaned using a brush and vacuum cleaner, and dry compressed air (max. 1 bar) for areas
that cannot be easily reached.
Ventilation
The ventilation openings in the devices must never be obstructed. The fans must be checked
to make sure that they are functioning correctly.
Cable and screw terminals
Cable and screw terminals must be checked regularly to ensure that they are secure in
position, and if necessary, retightened. Cabling must be checked for defects. Defective parts
must be replaced immediately.
Note
Maintenance intervals
The actual intervals at which maintenance procedures are to be performed depend on the
installation conditions (cabinet environment) and the operating conditions.
Siemens offers its customers support in the form of a service contract. For further details,
contact your regional office or sales office.
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Air-cooled chassis power units
Manual, 07/2019, 6SL3097-4AE00-0BP9