Installation Manual
H3C SecPath F100-C Firewall
Chapter 2 Preparing for Installation
2-2
Table 2-1
Temperature and humidity requirements in the
equipment room
Temperature
Relative Humidity
0
°
C to 40
°
C (32
°
F to 104
°
F)
10% to 90%
2.1.2 Cleanliness
The equipment room must be free of explosion hazards and the
electrical and magnetic conductible dust as well. The contents of the
dust must be limited as shown in the following table:
Table 2-2
Limit to the content of dust in an equipment room
Substance
Unit
Content
Dust Particle/m³
≤
3 X 10
4
(No visible dust on
the table top for
three days)
Note: Diameter of a dust particle
≥
5
μ
m
Besides the dust, there are rigorous limits on the harmful gases
that can accelerate the erosion and aging of metals, such as salts,
acids, and sulfides, as shown in the following table.
Table 2-3
Limits of harmful gases in the equipment room
Gas
Maximum (mg/m
3
)
SO
2
0.2
H
2
S 0.006
