HP Firewall Series Installation Manual download pdf (Page 9)

Altitude

Table 4 Altitude requirements

Item Altitude

Operating altitude –60 m (–196.85 ft) to 3 km (1.86 miles)

Storage altitude –60 m (–196.85 ft) to 4.5km(2.8 miles)

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 5 Dust concentration limit in the equipment room

Substance Concentration limit (particles/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 6.

Table 6 Harmful gas li

mits in an equipment room

Gas Max. (mg/m

)

0.2

S 0.006

0.05

0.01

Cooling system

The A-F1000-A-EI/A-F1000-S-EI firewall adopts left to right airflow for heat dissipation.

Figure 3 A-F1000-A-EI/A-F1000-S-EI airflow

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HP Firewall Series Installation Manual Page 9