3-2
Table 3-3
Concentration limit of some harmful gases in the equipment room
Gas
Max (mg/m
3
)
SO
2
0.2
H
2
S 0.006
NH
3
0.05
Cl
2
0.01
Ventilation Requirements
The fans of the F5000-A5 draw air in through the inlet vents on the left and out through the exhaust
vents on the right.
Figure 3-1
Ventilation method for the F5000-A5
Make sure that:
There is a minimum clearance of 10 cm (3.9 in.) around the inlet vents and exhaust vents for heat
dissipation of the device chassis.
A ventilation system is available at the installation site.
Electrostatic Discharge Prevention
Generation and damage of static electricity
In the communication network to which the device is connected, static induction mainly results from:
External electrical fields such as outdoor high voltage power line or lightning
Indoor environment, flooring materials, and the device structure
Although the F5000-A5 adopts many antistatic measures, damage to board circuits or even the device
may still happen when the static electricity exceeds a certain limit.
Measures against ESD
To prevent electrostatic discharge (ESD),
