03.06
4.2 Mounting
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© Siemens AG, 2006. All rights reserved
SINUMERIK 840D Configuring Manual NCU (PHD) – 03.06 Edition
Fan box
!
Warning
Only trained personnel may replace a fan box. The regulations for handling
electrostatic sensitive devices must be observed.
Completely switch off the system. Check that it is safely isolated from the
supply and safeguard against unauthorized switch-on.
4 Descri