Contaminant Conditions; Checking Acoustic Noise Levels - Fujitsu M10 Installation Manual

when the relative humidity falls below 30%. The set optimal relative humidity range
is stricter than the guidelines applied to indoor locations with more relaxed
environmental conditions such as general office environments. However, if the server
is installed in a server room, this condition is not difficult to meet because server
rooms utilize highly efficient moisture-proof materials and have fewer ventilation
cycles.
2.5.3

Contaminant conditions

Table 2-6
SPARC M10 systems.
Table 2-6 Acceptable reference values for contaminants
Contaminant
Hydrogen sulfide (H2S)
Sulfurous acid gas (sulfur oxide) (SO2)
Hydrogen chloride (HCI)
Chlorine (CI2)
Hydrogen fluoride (HF)
Nitrogen dioxide (nitrogen oxide) (NO2)
Ammonia (NH3)
Ozone (O3)
Oil vapor
Dust
Seawater (salt damage)
2.6

Checking Acoustic Noise Levels

This section describes the acoustic noise levels of the SPARC M10 systems.
The acoustic noise levels of each chassis in
according to the following conditions.
Measurement environment: Complying with ISO 7779
Ambient temperature: 23°C
Fujitsu M10/SPARC M10 Systems Installation Guide ･ July 2015
40
lists the acceptable reference values for contaminants with regard to the
Acceptable reference value
7.1 ppb or less
37 ppb or less
6.6 ppb or less
3.4 ppb or less
3.6 ppb or less
52 ppb or less
420 ppb or less
5 ppb or less
3
0.2 mg/m or less
3
0.15 mg/m or less
Do not install out at sea or within 500 m
(1,640.4 ft.) of the seashore.
(However, this does not apply if air
conditioning facilities do not use outside air.)
Table 2-7 and Table 2-8 were measured