H3C Technologies H3C SecPath F5000-S Firewall - Manual (Page 16)

7
Front mounting
bracket (required)
Rubber feet (required) Bail latch (required) Cable tie (user supplied)
Checklist before installation
Table 5 Checklist before installation
Item Requirements Result
Installation
site
Ventilation
• There is a minimum clearance of 10 cm (3.94 in) around
the inlet and outlet air vents for heat dissipation of the
firewall chassis.
• A ventilation system is available at the installation site.
Temperature
Operating: 0°C to 40°C (32°F to 104°F)
Non operating: –40°C to +70°C (–40°F to +158°F)
Relative humidity
Operating: 10% to 95% (noncondensing)
Non operating: 5% to 95% (noncondensing)
Cleanness
• Dust concentration ≤ 3 × 10 4 particles/m 3
• No dust on desk within three days
ESD prevention
• The equipment and rack are well grounded.
• The equipment room is dust-proof.
• The humidity and temperature are at a proper level.
• Wear an ESD-preventive wrist strap and make sure the
wrist strap makes good skin contact and is well
grounded when installing FRUs.
• Put cards away on an ESD-preventive workbench, with
the PCB upward, or put them in ESD-preventive bags for
future use.
• Touch only the edges, instead of electronic components
when observing or moving a removed interface card.
EMI prevention
• Take effective measures to protect the power system from
the power grid system.
• Separate the protection ground of the firewall from the
grounding device or lightning protection grounding
device as far as possible.
• Keep the firewall far away from radio stations, radar and
high-frequency devices working in high current.
• Use electromagnetic shielding when necessary.