Replacing The Cooling Fan - Siemens sinamics g120 Hardware Installation Manual

Service and maintenance

5.2 Replacing the cooling fan

Cables and screw terminals
Cables and screw terminals must be checked regularly to ensure that they are secure, and if
necessary, retightened. Retighten if necessary. The wiring must be checked for damage.
Defective parts must be replaced immediately.
Note
The actual maintenance intervals depend on the installation and operating conditions.
Siemens offers its customers support in the form of service contracts. For further information,
contact your Siemens regional office or sales office.
5.2 Replacing the cooling fan
Service life of the fan
The average service life of the fan is 40,000 hours. In practice, however, the service life may
deviate from this value. Especially a dusty environment can block up the fan.
The fan must be replaced in good time to ensure that the inverter is ready for operation.
Danger to life through electric shock due to the residual charge of the DC link capacitors
Because of the DC link capacitors, a hazardous voltage is present for up to 5 minutes after
the power supply has been switched off.
Contact with live parts can result in death or serious injury.
• Do not open the protective cover of the device until 5 minutes have elapsed.
• Before starting any work, check that the system is in a voltage-free state by measuring
• Ensure that the associated warning plate in the appropriate language is attached.
54
DANGER
all terminals, also to ground.
Power Module PM230, IP20 / Push-through technology (PT)
Hardware Installation Manual, 06/2014, A5E34331322B AA