7
Pre-installation checklist
Table 5 Pre-installation checklist
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 device chassis.
•
A ventilation system is available at the installation
site.
Temperature
(indoor)
•
Operating: 0°C to 45°C (32°F to 113°F)
•
Storage: –40°C to +70°C (–40°F to +158°F)
Relative humidity
(indoor)
5% RH to 95% RH, noncondensing
Cleanliness
•
Dust
concentration
≤
3 × 10
4
particles/m
3
•
No dust on desk within three days
ESD prevention
•
The equipment and the workbench or rack are
reliably grounded.
•
The equipment room is dust-proof.
•
The humidity and temperature are at acceptable
levels.
•
An ESD wrist strap is available.
•
An antistatic workbench is available.
•
Antistatic bags are available.
EMI prevention
•
Effective measures are taken for filtering interference
from the power grid.
•
The protection ground of the device is away from the
grounding facility of power equipment or lightning
protection grounding facility.
•
The device 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 grounding cable of the chassis is reliably
grounded.
•
The grounding terminal of the AC power receptacle is
reliably grounded.
•
(Optional.) A power lightning arrester is available.
Electricity safety
•
A UPS is available.
•
The power-off switch in the equipment room is
identified and accessible so that the power can be
immediately shut off when an accident occurs.
Rack-mounting
requirements
•
The rack has a good ventilation system.
•
The rack is sturdy enough to support the weight of the
device and installation accessories.
•
The rack has a size that can accommodate the
device.
•
The front and rear of the rack are a minimum of 0.8 m
(2.62 ft) away from walls or other devices.
Safety
precautions
•
The device is far away from any moist area and heat source.
•
The emergency power switch in the equipment room is located.
