16CHAPTER 2: INSTALLING THE ROUTER
■During the installation, wear an
3Com recommends that you use an uninterrupted power supply (UPS) with your router.
General Site The environment of the installation site influences the performance and lifetime of Requirements the router. The installation site for your router should meet the following
requirements for temperature and humidity, dust, gases, static electricity, and electromagnetic discharge.
Temperature and Humidity
To ensure normal operation and to prolong the operational lifetime of the router, the temperature and humidity of the equipment room must be within controlled limits. The requirements for the temperature and humidity of the router installation site are listed below.
Table 13 Temperature and Humidity Requirements
Temperature | Relative humidity |
|
|
00 to 400C (320 to 1040F) | 5% to 85% |
Dust
Dust is harmful to the safe operation of the router. The specifications for the dust content and diameter of the granule within the equipment room are listed below.
Table 14 Specification for Dust Content
Maximum |
|
|
|
|
diameter (µ m) | 0.5 | 1 | 3 | 5 |
|
|
|
|
|
Maximum | 1.4 x 107 | 7 x 105 | 2.4 x 105 | 1.3 x 105 |
density (the number of granules per cubic meter)
Gases
The equipment room of the router must meet strict requirements for the content of salt, acid and sulfide. The specific limitation values of these harmful gases are given below.
Table 15 Harmful Gas Limitation Values in Equipment Room
Gas | Average (mg/m3) | Maximum (mg/m3) |
SO2 | 0.2 | 1.5 |
H2S | 0.006 | 0.03 |
NO2 | 0.04 | 0.15 |
NH3 | 0.05 | 0.15 |
Cl2 | 0.01 | 0.3 |
|
|
|
Static Electricity
To prevent damage caused by the static electricity, ensure that:
■The equipment is grounded