Siemens MICROMASTER 420 Reference Manual page 86

6.1 Maintenance
The MICROMASTER 420 itself has no user serviceable components. However,
after prolonged use, the fan mounted on the bottom of the inverter may become
unserviceable. In this case, the fan can easily be removed and exchanged. The
faulty fan should be disposed of according to local regulations. Figure 6-1
illustrates the method of removal.
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3
Figure 6-1
78
Fan Removal
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MICROMASTER 420 Reference Manual
Issue A1