Siemens SINAMICS DCM Manual page 658

11.2 Replacing components
Note
Only authorized Siemens personnel are permitted to repair the power unit.
Exception: Fuses may also be changed by the customer.
11.2.1 Replacing the fan
WARNING
The fan must only be replaced by qualified personnel.
The TSE capacitors continue to carry dangerous voltage levels following disconnection. For
this reason, the device should not be opened until a reasonable period of time has elapsed.
Death, serious injury, or substantial material damage can result if these warnings are not
taken into account.
WARNING
An incorrect phase sequence (counter-clockwise phase sequence = fan rotates the wrong
way) may create a risk of the device overheating.
Check: If the fan rotor rotates in a counter-clockwise direction (to the left) when viewed from
above, then the direction of rotation is correct.
Notice: Risk of injury due to rotating parts.
The recommendation to replace the fan is displayed in the form of alarm A60165, refer to
Chapter 10, Section "Operating hours counter, device fan".
SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
ac.maher.co.ir
Maintenance
11.2 Replacing components
659