Juniper ACX1000 Hardware Manual page 80

• The site must be as dust-free as possible, because dust can clog air intake vents and filters, reducing
the efficiency of the router cooling system.
• Maintain ambient airflow for normal router operation. If the airflow is blocked or restricted, or if the
intake air is too warm, the router might overheat, leading to the router temperature monitor shutting
down the router to protect the hardware components.
NOTE: Depending on the ambient temperature, it may take up to 5 minutes for the router to
heat up to the operating temperature.
Table 20 on page 72 provides the required environmental conditions for normal router operation.
Table 20: Router Environmental Specifications
Description
Altitude
Relative humidity
Temperature
Commercial grade SFP/SFP+
temperature
Seismic
Value
No performance degradation to 10,000 ft (3048 m)
Normal operation ensured in relative humidity range of 5% to 90%,
noncondensing
•
Harsh environment: –40°F (–40°C) to 149°F (65°C)
•
Central office environment: 23°F (–5°C) to 131°F (55°C)
•
Harsh environment: –40°F (–40°C) to 122°F (50°C)
•
Central office environment: –40°F (–40°C) to 104°F (40°C)
Designed to meet Telcordia Technologies Zone 4 earthquake requirements
72