Siemens SINAMICS G120, Installation Manual

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Service and maintenance
5.3 Replacing a fan
Power Module PM240-2
70
Hardware Installation Manual, 01/2020, A5E33294624B AL
5.3 Replacing a 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 converter is ready for operation.
Applies to all frame sizes
Proceed as follows to remove the fan unit:
Switch off the converter power supply before replacing the fan.
WARNING
Electric shock as a result of a residual charge in power components
After the power supply has been switched off, it takes up to 5 minutes until the capacitors in
the converter have discharged so that the residual charge is at a non-hazardous level.
•
Check the voltage at the converter connections before you carry out any installation
work.
5.3.1 Fan replacement FSA … FSC
The fan module is installed at the bottom. It has one fan each for frame sizes FSA and FSB,
and two for frame size C.
Procedure
1.
Withdraw the line and motor cable plug connectors and, if available, remove the braking
resistor from the Power Module.
2. Remove the shield plate from the Power Module.
3. Remove the fan module from the Power Module in steps
①
and
②
as shown in the
diagram. Use a screwdriver if necessary.
4. Install the new fan module in the inverse sequence.
You have replaced the fan module.