Maipu MP1800X-40, Руководство по установке

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MP1800X Series Router
Appendix
copyright

2017Maipu, all rights reserved
D-5
D1.3 Cleanliness requirements
Dust is harmful to the safe operation of the router. When indoor dust falls on the router,
it may cause electrostatic adsorption to lead to poor contact of the metal connector or
metal contact. In particular, it is easier to cause electrostatic adsorption when the
indoor relative humidity is low, which does not only affect the equipment life, but also
easily lead to communication failure. Requirements for content and particle size of dust
in equipment room are as shown in the following table.
Appendix Table D-2
Requirements for content of dust in equipment room
Maximum
diameter (μm) 0.5 1 3 5
Maximum
concentration
(particle/m
3
)
1.4
×
10
7
7
×
10
5
2.4
×
10
5
1.3
×
10
5
Caution:

The cleanliness requirements are met when there is no visible dust on a desktop in
3 days.
Besides dust, the equipment room for the router also has strict requirements for the salt,
acid and sulfide in the air as those will accelerate metal corrosion and aging of some
parts.
Harmful gases like SO2, H2S, NO2, NH3 and Cl2 shall be prevented from entering the
equipment room, with the specific limit values as shown in the following table.
Appendix Table D-3 Content index of the harmful gases in equipment room
Gas Maximum (mg/m
3
)
SO
2
0.2
H
2
S 0.006
NO
2
0.2
NH
3
0.05
Cl
2
0.01