6
Table 2 Mechanically active substance concentration limit in the equipment room
Substance Particle diameter Concentration limit
Dust particles ≥ 5 µm
≤ 3 x 10
4
particles/m
3
(No visible dust on desk in three days)
Dust (suspension) ≤ 75 µm ≤ 0.2 mg/m
3
Dust
(sedimentation)
75 µm to 150 µm ≤ 1.5 mg/(m
2
h)
Sand ≥ 150 µm ≤ 30 mg/m
3
The equipment room must also meet limits on salts, acids, and sulfides to eliminate corrosion and
premature aging of components, as shown in Table 3.
Table 3
Harmful gas limits in an equipment room
Gas Maximum concentration (mg/m
3
)
SO
2
0.2
H
2
S 0.006
NO
2
0.04
NH
3
0.05
Cl
2
0.01
Grounding requirements
Correctly connecting the server grounding cable is crucial to lightning protection, anti-interference,
and ESD prevention. The server can be grounded through the grounding wire of the power supply
system and no external grounding cable is required.
Installation tools
Table 4 lists the tools that you might use during installation.
Table 4 Installation tools
Picture Name Description
T25 Torx screwdriver For captive screws inside chassis ears.
T30 Torx screwdriver For captive screws on processor heatsinks.
T15 Torx screwdriver
(shipped with the server)
For screws on access panels.
T10 Torx screwdriver
(shipped with the server)
For screws on PCIe module blanks or riser card
blanks.
Flat-head screwdriver
For captive screws inside chassis ears or for replacing
system batteries.
Phillips screwdriver For screws on SATA M.2 SSDs.
Cage nut insertion/extraction
tool
For insertion and extraction of cage nuts in rack posts.
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