Installation Manual

3
Temperature and humidity
Maintain appropriate temperature and humidity in the equipment room.
• 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.
• High temperature can accelerate the aging of insulation materials and significantly lower the
reliability and lifespan of the router.
For the temperature and humidity requirements of the router, see Table 2.
Table 2 Temperature r
equirements
Item Tem
p
erature
Operating temperature 0°C to 45°C (32°F to 113°F)
Storage temperature –40°C to 70°C (–40°F to +158°F)
Table 3 Humidity requirements
Item Relative humidit
y
Operating humidity 5% to 95%
Storage humidity 5% to 95%
Altitude
Table 4 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(2.8 miles)
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.
Table 5 Dust concentration limit in the equipment room
Substance Concentration limit (
p
articles/cu m)
Dust particles
 3 x 10
4
(No visible dust on desk in three days)
NOTE:
Dust particle diameter ≥ 5 μm