H3C Technologies H3C SR6600-X - Manual (Page 14)

4
Temperature
To ensure normal operation of the router, make sure the room temperature meets the requirements
in Table 1 .
Table 1 Temperature requirements
Item Temperature
Operating temperature 0°C to 45°C (32°F to 113°F)
Storage temperature –40°C to +70°C (–40°F to +158°F)
Humidity
Maintain appropriate humidity in your equipment room, as described in Table 2 .
• Lasting high relative humidity tends to cause poor insulation, electricity creepage, mechanical
property change of materials, and corrosion of metal parts.
• Lasting low relative humidity is likely to result in loose screws due to washer contraction, and even
ESD, which causes the circuits to fail.
Table 2 Humidity requirements
Item Humidity
Operating humidity (noncondensing) 10% to 95%
Storage humidity (noncondensing) 5% to 95%
Altitude
Table 3 Altitude requirements
Item Altitude
Operating altitude –60 m (–196.85 ft) to 4 km (2.49 miles)
Storage altitude –60 m (–196.85 ft) to 4.5 km (2.80 miles)
Cleanness
Dust buildup on the chassis might 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.
Table 4 Dust concentration limit in the equipment room
Substance Concentration limit (particles/m 3 )
Dust particles
≤ 3 x 10 4
(No visible dust on desk in three days)