5
Pre-installation checklist
Item Requirements
Installation
site
Ventilation
•
There is a minimum clearance of 10 cm (3.9 in) around the air
inlet and outlet vents.
•
An adequate ventilation system is available at the installation
site.
Temperature
0°C to 45°C (32°F to 113°F)
Relative humidity
5% to 90% (noncondensing)
Cleanness
Dust concentration
≤
3 × 10
4
particles/m
3
(no visible dust on the
tabletop over three days)
ESD prevention
•
The router and floor are reliably grounded.
•
The equipment room is dust-controlled.
•
Humidity and temperature are maintained at acceptable levels.
•
An ESD wrist strap is available.
EMI prevention
•
A single-phase three-wire power receptacle with protection
earth (PE) is available for filtering interference from the power
grid.
•
The router is far away from radio transmitting stations, radar
stations, and high-frequency devices.
•
Electromagnetic shielding, for example, shielded interface
cables, is used as required.
Lightning protection
•
The router is reliably grounded.
•
The AC power receptacle is reliably grounded.
•
(Optional.) Port lightning protectors are available. A signal
lightning arrester is required at the input end of an external
signal cable.
•
(Optional.) Power lightning protectors are available.
Electricity safety
•
A UPS is available.
•
The external power switch is located so to shut off the power
immediately when an accident occurs..
Workbench
•
The workbench is stable.
•
The workbench is reliably grounded.
Safety
precautions
•
The router is far away from any sources of heat or moisture.
•
The emergency power switch in the equipment room is identified and accessible.
Tools
•
Installation accessories supplied with the router are ready.
•
User-supplied tools are ready.
Reference
•
Documents shipped with the router are available.
•
Online documents are available.