H3c-technologies H3C MSR 3600 Manual de usuario descargar pdf (Pagina 10)

Examining the installation site

The router can only be used indoors. To make sure the router operates correctly and to prolong its service

lifetime, the installation site must meet the following requirements.

Temperature and humidity

You must maintain temperature and humidity in the equipment room at acceptable levels.

• Lasting high relative humidity tends to cause poor insulation, electricity creepage, mechanical

property change of materials, and corrosion of metal parts.

• Lasting low relative humidity is likely to result in loose screws due to washer contraction, and even

ESD, which causes the circuits to fail.

• A high temperature is the most undesirable condition, because it accelerates the aging of insulation

materials and significantly lowers reliability and service life of the router.

For the temperature and humidity requirements of the router, see Table 1.

Table 1 Temperature

and humidity requirements

Tem

erature Humidit

0°C to 45°C (32°F to 113°F) 5% to 90% (noncondensing)

Cleanness

Dust buildup on the chassis might result in electrostatic adsorption, which causes poor contact of metal

components and contact points, especially when indoor relative humidity is low. In the worst case,

electrostatic adsorption can cause communication failure.

Table 2 Dust concentration limit in the equipment room

Substance Concentration limit (

articles/m

)

Dust particles

≤ 3 x 10

(No visible dust on desk in three days)

NOTE:

Dust particle diameter ≥ 5 μm

The equipment room must also meet limits on salts, acids, and sulfides to eliminate corrosion and

premature aging of components, as shown in Table 3.

Table 3 Harmful gas li

mits in the equipment room

Gas Max. (m

)

0.2

S 0.006

0.05

0.01

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 94 95

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H3c-technologies H3C MSR 3600 Manual de usuario Pagina 10