Long Time Storage Of Replacement Parts; Storing Fans For Devices In The Chassis-2 Format - Siemens SINAMICS S120 Manual

10.5

Long time storage of replacement parts

10.5.1

Storing fans for devices in the Chassis-2 format

When replacement fans are stored, the fan bearings are subject to an aging process. This can
result in a higher level of wear and in turn, premature fan failure.
For replacement fans for Active Interface Module, Active Line Module and Motor Module in
the Chassis-2 format, the following constraints must be taken into consideration.
Storing fans for Active Line Module and Motor Module in the Chassis-2 format
In order to guarantee perfect operation and the longest possible service life, do not store the
device for more than one year.
Storing electronic fans for Active Line Modules and Motor Modules in the Chassis-2 format
If stored for longer periods of time, the fan should be operated for approximately 15 minutes
every year in order to move the motor bearings.
Storing fans for Active Interface Modules in the Chassis-2 format
Avoid excessively long storage times; we recommend a maximum one year (for longer
periods of time, contact the manufacturer before commissioning).
• Before installing, carefully check the motor bearings to ensure that they function
correctly.
• Recommendation: Regularly rotate the fan impeller to prevent it from seizing up and
damaging the bearings.
Air-cooled chassis power units
Equipment Manual, 06/2020, 6SL3097-5AE00-0BP3
Maintenance and Servicing
10.5 Long time storage of replacement parts
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