H3C Technologies H3C SecPath F100-C-EI - Manual (Page 22)

Installation Manual
H3C SecPath F100-C-EI Firewall
Chapter 2 Preparing for Installation
2-2
Table 2-1
Temperature/humidity requirements in the equipment
room
Temperature Relative humidity
0°C to 45°C (32°F to 113°F) 10% to 95% (noncondensing)
2.1.2 Cleanness Requirements
I. Dust prevention requirements
Dust undermines the normal operation of your device. Dust on
the equipment can cause electrostatic adsorption, which degrades the
contact performance of the metal connectors or connection points.
This not only shortens the service life or your device, but also causes
communication failures.
This is more likely to happen when the relative humidity in the
equipment room is too low.
The contents of the dust in the equipment room must not exceed
the limit as shown in the following table:
Table 2-2
Limitation on dust content in equipment room
Substance Content (particles/m³)
Dust
≤ 3 X 10
4
(No visible dust on desk over three days)