Siemens SINAMICS S120 Manual page 47

Storage
The cabinet units must be stored in clean, dry rooms. Temperatures between -25 °C and
+55 °C are permissible (class 1K4 to EN 60721-3-1). Temperature variations greater than 20
K per hour are not permitted.
If the cabinets are stored for a prolonged period, cover them or take other appropriate
measures to ensure that they do not become dirty and that they are protected against
environmental influences. If such measures are not taken, the warranty becomes invalid in
the event of a claim for damages.
Forming the DC link capacitors
The cabinet unit should not be stored for more than two years. If the cabinet unit is stored
for more than two years, the DC link capacitors of the power units must be reformed during
commissioning.
The reforming procedure is described in the chapter titled "Maintenance and service",
section "Reforming the DC link capacitors".
NOTICE
Do not apply mechanical loads to the hoods!
The hoods (option M23, M43 or M54) are delivered separately and must be installed on
site.
Therefore the hoods must not be subjected to mechanical loads, otherwise they could be
destroyed.
Cabinet Modules
Manual, 03/2013, A5E03263538A
WARNING
Mechanical installation
3.1 Important notes
45