8
Pre-installation checklist
Table 8 Pre-installation checklist
Item Requirements
Result
Installati
on site
Ventilation
•
There is a minimum clearance of 10 cm (3.9 in) around the
inlet and outlet vents for heat dissipation of the router
chassis.
•
A ventilation system is available at the installation site.
Temperature
0°C to 45°C (32°F to 113°F)
Relative humidity
10% to 95% (noncondensing)
Cleanliness
•
Dust
concentration
≤
3 × 104 particles/m
3
•
No dust on desk within three days
ESD prevention
•
The equipment and floor are reliably grounded.
•
The equipment room is dust-proof.
•
The humidity and temperature are in the acceptable range.
•
Wear an ESD wrist strap and uniform when touching a
circuit board.
•
Place the removed memory module, CF card, or
HIM/MIM/MIC/MIC-X on an antistatic workbench, with the
face upward, or put it into an antistatic bag.
•
Touch only the edges, instead of electronic components
when observing or moving a removed memory module, CF
card, or HIM/MIM/MIC/MIC-X.
EMI prevention
•
Take effective measures to protect the power system from
the power grid system.
•
Separate the protection ground of the router from the
grounding device or lightning protection grounding device
as far as possible.
•
Keep the router far away from radio stations, radar and
high-frequency devices working in high current.
•
Use electromagnetic shielding when necessary.
Lightning
protection
•
The grounding cable of the chassis is reliably grounded.
•
The grounding terminal of the AC power receptacle is
reliably grounded.
•
A port lightning arrester is installed. (Optional)
•
A power lightning arrester is installed. (Optional)
•
A signal lightning arrester is installed at the input end of an
external signal cable. (Optional)
Electricity safety
•
Equip an uninterrupted power supply (UPS).
•
In case of emergency during operation, switch off the
external power switch.
Workbench
•
The workbench is stable enough
•
Well
grounding
Rack-mounting
requirements
•
Install the router in an open rack if possible. If you install the
router in a closed cabinet, make sure the cabinet is
equipped with a good ventilation system.
•
The rack is sturdy enough to support the weight of the
router and installation accessories.
•
The size of the rack is appropriate for the router.
•
The front and rear of the rack are a minimum of 0.8 m
(31.50 in) away from walls or other devices.
