7
Table 4
Harmful gas concentration limits
Gas Max.
(mg/m
3
)
SO
2
0.2
H
2
S 0.006
NH
3
0.05
Cl
2
0.01
To prevent overheating:
•
Provide adequate clearance for air flow, including at least 10 cm [3.94 in] ventilation space around
the router's air intake and outlet vents.
•
Make sure the site has an adequate cooling system.
EMI
EMI from any source adversely affects the router.
To prevent EMI:
•
Use electromagnetic shielding when necessary.
•
Take measures against interference from the power grid.
•
Position the router as far as possible from any power source's grounding equipment or light-
prevention equipment.
•
Position the router as far as possible from radio transmitters, radar, and all high-voltage or high-
frequency equipment.
Lightning protection
To protect the router from lightning:
•
Make sure the grounding cable of the chassis is grounded properly.
•
Make sure the grounding terminal of the AC power receptacle is grounded properly.
•
Install a lightning arrester at the input end of the power supply.
•
Install a lightning arrester at the input end of outdoor signal lines (for example, E1/T1 line) to which
the router’s interface modules are connected.
Installation tools
Accessories provided with the router
•
Power cord
•
Console cable
•
Grounding cable
