User's Manual

The equipment room must be free from explosive, conductive, magnetically-permeable, and
corrosive dust. Table 5-11 shows the requirement for dust concentration in the equipment room.
Table 5-11 Requirements for dust particles in the equipment room
Mechanical active
material
Unit Concentration
Dust particle
Particle /m
3
≤ 3x 10
4
(no visible dust accumulated
on a workbench in three
days)
Suspending dust
mg/m
3
≤0.2
Precipitable dust
mg/m
2
·h
≤1.5
Description
l Dust particle diameter ≥ 5 µm
l Suspending dust diameter ≤ 75 µm
l 75 µm ≤ precipitable dust diameter ≤ 150 µm
Take the following measures to meet the requirements:
l Use dustproof materials for ground, wall, and ceiling construction.
l Use screens on the door and windows facing outside. The outer windows should be dust-
proof.
l Clean the equipment room regularly and clean the air filter monthly.
l Wear shoe covers and ESD clothes before entering the equipment room.
Requirements for Corrosive Gases
The room should be free from dusts and corrosive gases, such as SO
2
, H
2
S, and NH
3
. Table
5-12 shows the requirements for the corrosive gas concentration.
Table 5-12 Requirements for corrosive gas concentration
Chemical active
material
Unit Concentration
SO
2
mg/m
3
≤0.20
H
2
S
mg/m
3
≤0.006
NH
3
mg/m
3
≤0.05
Cl
2
mg/m
3
≤0.01
Huawei AP8030DN & AP8130DN
Hardware Installation and Maintenance Guide
5 Appendix
Issue 03 (2015-05-18) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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