H3C Technologies H3C S9500E Series Switches - Manual (Page 27)

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Weight support
Make sure the floor can support the total weight of the rack, chassis, cards, power supplies, and all other
components. Additionally, the floor loading plan must also consider system expansion, such as adding
more cards.
For the weights of the switch components, see the chapter "Appendix A Technical specifications."
Temperature
CAUTION:
If condensation appears on the switch when you move it to a high-temperature environment, dry the switch
before powering it on to avoid short circuits.
To ensure the proper operation of the switch, the room temperature must meet the requirements described
in
Table 7 .
Table 7 Temperature requirements
Temperature Range
Operating temperature
• Long term:
0°C to 45°C (32°F to 113°F)
• Short term:
–10°C to +55°C (14°F to 131°F) (up to 96 hours of continuous
operation within less than 15 days in one year)
Storage temperature –40°C to +70°C (–40°F to +158°F)
Humidity
• Lasting high relative humidity can cause poor insulation, electricity creepage, mechanical property
change of materials, and metal corrosion.
• Lasting low relative humidity can cause washer contraction and ESD and bring problems including
loose captive screws and circuit failure.
Maintain appropriate humidity in your equipment room, as described in Table 8 .
Table 8 Humidity requirements
Humidity Range
Operating humidity 5% to 95%, noncondensing
Storage humidity 5% to 95%, noncondensing
Cleanness
Dust buildup on the chassis may result in electrostatic adsorption, which causes poor contact of metal
components and contact points, especially when indoor relative humidity is low. In the worst case,
electrostatic adsorption can cause communication failure.