Table 3 Humidity requirements
Item
Operating humidity (noncondensing)
Storage humidity (noncondensing)
Altitude
Table 4 Altitude requirements
Item
Operating altitude
Storage altitude
Cleanliness
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 5 Dust concentration limit in the equipment room
Substance
Dust particles
NOTE:
Dust particle diameter ≥ 5 µm
The equipment room must also meet strict limits on salts, acids, and sulfides to eliminate corrosion
and premature aging of components, as shown in
Table 6 Harmful gas limits in the equipment room
Gas
SO
2
H
S
2
NH
3
Cl
2
NO
2
Cooling system
The router has a horizontally-oriented fan tray slot at the top and uses bottom to top airflow for heat
dissipation.
To ensure good ventilation, the following requirements must be met:
•
Leave a minimum clearance of 10 cm (3.94 in) at the inlet and outlet air vents.
•
The installation site has a good cooling system.
Humidity
10% RH to 95% RH
5% RH to 95% RH
Altitude
–60 m (–196.85 ft) to +4 km (2.49 miles)
–60 m (–196.85 ft) to +4.5 km(2.8 miles)
Concentration limit (particles/m
4
≤ 3 x 10
(No visible dust on desk in three days)
Table
3
Max. (mg/m
)
0.2
0.006
0.05
0.01
0.04
3
3
)
6.