Maintenance - Siemens SINAMICS S120 Equipment Manual

Maintenance and service

10.2 Maintenance

10.2 Maintenance
The devices comprise mostly electronic components. Apart from the electronic fan(s),
therefore, they contain hardly any components that are subject to mechanical wear or that
require maintenance or servicing. Maintenance is intended to ensure that the equipment
remains in the specified condition. Inspections must be performed regularly, but at least once
a year. Where necessary, contaminants must be removed and wearing parts 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 electronic 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.
Checking for leaks
The cooling system should be checked for leaks whenever maintenance is carried out.
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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Water-cooled chassis power units for common cooling circuits
Manual, 08/2017, 6SL3097-4AM10-0BP0