H3c-technologies H3C SecPath F1000-E Uživatelský manuál stáhnout pdf (Strana 16)

Item Tem

erature

Storage temperature –40°C to +70°C (–40°F to +158°F)

Table 2 Humidity requirements

Item Relative humidit

Operating humidity 10% to 95%, noncondensing

Storage humidity 5% to 95%, noncondensing

Cleanness

Dust buildup on the chassis may 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 3 Dust concentration limit in the equipment room

Substance Concentration limit (

articles/cu m)

Dust particles

 3 x 10

(No visible dust on desk in three days)

NOTE:

Dust particle diameter  5 m

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

premature aging of components, as shown in Table 4.

Table 4 Harmful gas li

mits in an equipment room

Gas Max. (m

)

0.2

S 0.006

0.05

0.01

Cooling

The firewalls adopt left to right airflow for heat dissipation. Plan the installation site for adequate

ventilation.

• Leave at least 10 cm (3.94 in) of clearance at the inlet and outlet air vents.

• The installation site has a good cooling system.

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H3c-technologies H3C SecPath F1000-E Uživatelský manuál Strana 16