HP A5120 EI Series

3
Table 5 Harmful gas limits in the equipment room
Gas
Maximum concentration (mg/m
3
)
SO
2
0.2
H
2
S
0.006
NH
3
0.05
Cl
2
0.01
Rack-mounting requirements
Before rack-mounting a switch, make sure the rack meets the following requirements:
 HP recommends that you mount a switch in an open rack. If you mount a switch in a closed rack,
make sure there is a good heat dissipation system.
 The rack is steady enough to support the switch and accessories.
 The switch fits the rack size. Leave some space beside the left and right panels of the switch for
chassis heat dissipation.
Installation tools
The following installation tools are user-supplied.
 Flathead screwdriver
 Phillips screwdriver
 Needle-nose pliers
 Wire-stripping pliers
 Diagonal pliers
 ESD-preventive wrist strap
 Blow dryer (optional; for heating insulation for OT terminal joint when making a grounding wire)