H3C MSR 30-16, Руководство по установке

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2
I
NSTALLATION
P
REPARATIONS
Requirements on
Environment
H3C MSR 30 Series must be used indoors. To ensure the normal operation and
prolong their service life, the following requirements for installation site must be
met.
Requirements on
Temperature/Humidity
To ensure the normal operation and prolong their service life, certain requirements
on temperature and humidity in the equipment room shall be met. If the relative
humidity is too high, the insulation materials in it will deteriorate easily or even
lead to electric leakage. Sometimes this will result in change to the mechanical
performance of the materials and rusting of the metal components. If the relative
humidity is too low, the fastening screw will become loosen due to shrinkage of
the isolation spacer. In an environment with dry climate, static electricity may be
produced, putting the CMOS of the router to risk. High temperature is of the
greatest risk: for it will significantly degrade the router’s reliability, speed up aging
process of the insulating materials, and shorten the service life of the router.
The requirements on the temperature and humidity for H3C MSR 30 Series are
shown in the following table:
Requirements on
Cleanness
Dust is harmful to the safe operation of the Router. Dust on the chassis may result
in static absorption, thus causing poor contact of the metal connection
components or points. Especially under the condition of low indoor humidity, dust
is easier to be absorbed.
The requirements on the dust concentration and diameter of H3C MSR 30 Series
Routers are shown in the following table:
Besides the dust specifications, the equipment room of the Router should also
meet the rigorous requirements for the content of salt, acid and sulfide. These
harmful gases could accelerate the metal erosion and aging process of some parts.
The specific limits of these harmful gases as SO
2
, H
2
S, NO
2
, NH
3
and CI
2
are given
in the following table.
Table 16 Temperature/humidity requirements in the equipment room
Temperature Relative humidity
0
°
C to 40
°
C (32
°
F to 104
°
F) 5% to 90% (non-conducting)
Table 17 Limitation on dust content in equipment room
Diameter (
μ
m) 0.5 1 3 5
Concentration
(particle/m
3
)
1.4
×
10
7
7
×
10
5
2.4
×
10
5
1.3
×
10
5