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Removing And Installing Expansion Modules - Siemens SIMATIC Box PC 820 Manual

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System Unit
1.3.5

Removing and Installing Expansion Modules

S
Close the application you are using.
S
Remove the diskette or CD-ROM from the drive.
S
Pull out the power supply connector.
S
Release the 6 screws on the cover of the unit. (If necessary, remove the
Box PC 820 from its support or lower the PC FI 45 housing away from the front
panel as described in Section 1.3.2).
Figure 1-13
Opening the Cover of the Housing
Installing and Removing the Module Retainer
First you must remove the crossbeam on which the modules are mounted.
S
When you bend the notched spring clips inwards a little, the snap-in lockings
can be released.
S
Grip the crossbeam, push it approximately 1cm to the left, and then lift it out
with the the module retainers.
To install the retainers, proceed in reverse order.
1-16
Top housing plate
fastening screws
Module retainers
Expansion modules
Top housing plate
fastening screws
Fastening screws
for the expansion
modules
Top housing plate
fastening screws
Box PC 820 / PC FI45 V2, Manual
A5E00051531-03
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