H3C Technologies H3C SecPath L1000-A Load Balancer - Manual (Page 11)

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• High temperature can accelerate the aging of insulation materials and significantly lower the
reliability and lifespan of the L1000-A.
For the temperature and humidity requirements of the L1000-A, see Table 1 .
Table 1 Temperature and humidity requirements
Ambient temperature Ambient relative humidity
• Operating
0°C to 45°C (32°F to 113°F)
• Nonoperating and storage
–40°C to +70°C (–40°F to +158°F)
• Operating
5% to 95%, noncondensing
• Nonoperating and storage
5% to 95%, 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 (particles/cu m)
Dust particles
≤ 3 x 10 4
(No visible dust on desk in three days)
NOTE:
Dust particle diameter ≥ 5 μm
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 3 .
Table 3 Harmful gas limits in an equipment room
Gas Max. (mg/m 3 )
SO
2
0.2
H
2
S 0.006
NH
3
0.05
Cl
2
0.01
Cooling
The L1000-A adopts 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.