H3C Technologies H3C MSR 930 - Manual (Page 8)

1
Preparing for installation
Safety recommendations
WARNING!
Before installation and operation, read all of the safety instructions in Compliance and Safety Guide
supplied with your router.
Follow these general safety recommendations:
• Turn off all power and remove all power cables before opening the chassis.
• Unplug all power and external cables before moving the chassis.
• Before installation, locate the emergency power switch so that you can shut off power
immediately if necessary.
• Always wear an ESD-preventive wrist strap when installing the router.
• Do not stare into an open optical interface. The light can cause permanent eye damage.
• Use a good grounding system. This is essential for reliable operation.
• Confirm that the resistance between the chassis and the ground is less than 1 ohm.
Site requirements
The router can only be used indoors.
This section provides information about temperature, humidity, cleanness, and air quality requirements,
as well as rack-mounting requirements and protection against damage from lightning and EMI.
Table 1 Temperature and humidity requirements
Temperature Relative humidity
0°C to 40°C (32°F to 104°F) 5% to 90%
Table 2 Dust concentration limit in the equipment room
Substance Concentration limit (particles/m 3 )
Dust particles ≤ 3 x 10 4 (No visible dust on desk in three days)
NOTE:
Dust particle diameter ≥ 5 μm
Table 3 Harmful gas concentration limits
Gas Max. (mg/m 3 )
SO
2
0.2
H
2
S 0.006