7
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 40°C (32°F to 104°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.
