Replacing Components - Siemens SINAMICS S120 Equipment Manual

Maintenance and servicing

9.4 Replacing components

9.4 Replacing components
Warning
When transporting the devices and replacing components, note the following:
• Some of the devices and components are heavy or top heavy.
• Due to their weight, the devices must be handled with care by trained personnel.
•
Warning
The devices are operated on high voltages.
All connection work must be carried out when the cabinet is de-energized!
All work on the device must be performed by properly trained personnel. Death, serious
injury, or substantial material damage can result if these warnings are not taken into account.
Work on an open device must be carried out with extreme caution because external line
voltages may be present. The power and control terminals may be live even when the motor
is not running.
Due to the DC link capacitors, dangerously high voltage levels are still present inside the
device up to five minutes after it has been disconnected. For this reason, the cabinet should
not be opened until after an appropriate period of time has elapsed.
Caution
The busbars and coolant connections which stick out of the module must never be used as
handles or support surfaces when the units are transported.
9-4
Improper lifting and handling can cause serious or fatal injury to personnel and
substantial property damage.
SINAMICS S120 Equipment Manual, Edition 04/2007, 6SL3097-2AM00-0BP2
Chassis Power Units Liquid Cooled