7
Installation accessories
Table1-6 Installation accessories
M6 rack screw
M4 mounting bracket screw
Cage nut
Grounding cable
Slide rails and
chassis rails
Mounting brackets with
cable management
brackets
Pre-installation checklist
Table1-7 Checklist before installation
Item
Requirements
Installation
site
Ventilation
•
There is a minimum clearance of 100 mm (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:
Without hard disks: 0°C to 45°C (32°F to 113°F)
With hard disks: 5°C to 40°C (41°F to 104°F)
•
Storage: –40°C to +70°C (–40°F to +158°F)
Relative humidity
•
Operating:
Without hard disks: 5% RH to 95% RH, noncondensing
With hard disks: 10% RH to 80% RH, noncondensing
•
Storage: 5% RH to 95% RH, noncondensing
Cleanness
•
Dust conce
ntration ≤ 3 × 104 particles/m3
•
No dust on desk within three days
ESD prevention
•
The firewall and the rack are reliably grounded.
•
The equipment room is dust-proof.
•
The humidity and temperature are at an acceptable level.
•
Always wear ESD clothing, ESD gloves, and an ESD wrist strap
and when you install and remove a transceiver module.
•
Put the removed interface modules on an ESD workbench, with the
PCB upward, or put them in ESD bags for future use.
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
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