Siemens SIMATIC Box PC 820, Manual

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Box PC 820 / PC FI45 V2, Manual
A5E00051531-03
Before Opening the Unit
Before opening the unit, you should read the following rules carefully:
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Before you disconnect the power supply cable, discharge any electrostatic
charge on your body. You can do this by touching metallic parts, such as
screws, on the rear panel of the PG.
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Discharge any electrostatic charge from tools that you are using.
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Wear a grounding wrist strap if you are handling components.
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Leave components and modules in their packaging until you are ready to install
them.
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Disconnect the PC from its power supply before plugging in or removing any
modules or components.
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Touch components and modules only on their edges. Above all, do not touch
the connecting pins and printed conductors.
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Do not operate the PC with the cover open.
Tools
Use a suitable crosstip or TORX screwdriver to remove or install components.
System Unit
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