H3C Technologies H3C S5560 Series Switches - Manual (Page 26)

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Figure 21 Mounting the switch in the rack (2)
Mounting the switch on a workbench
IMPORTANT:
•
Ensure good ventilation and 10 cm (3.9 in) of clearance around the chassis for heat dissipation.
• Avoid placing heavy objects on the switch.
To mount the switch on a workbench:
1. Verify that the workbench is sturdy and correctly grounded.
2. Place the switch with bottom up, and clean the round holes in the chassis bottom with dry cloth.
3. Attach the rubber feet to the four round holes in the chassis bottom.
4. Place the switch with upside up on the workbench.
Grounding the switch
WARNING!
Correctly connecting the switch grounding cable is crucial to lightning protection and EMI protection.
The power input end of the switch has a noise filter, whose central ground is directly connected to the
chassis to form the chassis ground (commonly known as PGND). You must securely connect this chassis
ground to the earth so the faradism and leakage electricity can be safely released to the earth to
minimize EMI susceptibility of the switch.