2
Installation site requirements
This section provides information about temperature and humidity, cleanness, and air quality
requirements.
You must maintain a proper temperature and humidity in the equipment room. Long-term high
humidity may lead to bad insulation, electricity leakage, mechanical property changes, and metal
corrosion. However, if the relative humidity is too low, captive screws may become loose as the result
of contraction of insulation washers and static electricity may be produced in a dry environment to
jeopardize the circuits. High temperature is the most undesirable condition, because it accelerates the
aging of insulation materials and significantly lowers the reliability and service life of the switch.
For the temperature and humidity requirements of different switch models, see Table 10 in Appendix
A T
echnical specifications.
Table 2 Dust concentration limit in the equipment room
Substance Concentration limit (
articles/m
3
)
Dust particles
≤ 3 x 104
(No visible dust on desk in three days)
NOTE:
Dust particle diameter ≥ 5 μm
Table 3 Limits on harmful gases in the equipment room
Gas Maximum concentration (m
/m
3
)
SO
2
0.2
H
2
S 0.06
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.
• Make sure the rack is steady enough to support the switch and accessories.
• Make sure the switch fits the rack size. Leave some spaces beside the left and right panels of the
switch for chassis heat dissipation.
Installation tools
• Phillips screwdriver P1-100mm, P2-150mm, and P3-250mm
• ESD wrist strap
All these installation tools are user supplied.
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