General Site Guidelines - Juniper EX9253 Hardware Manual

Table 23: EX9253 Switch Environmental Tolerances
Description
Temperature
Seismic
Maximum thermal output (500 W)
NOTE: Install EX Series switches only in restricted areas, such as dedicated equipment rooms
and equipment closets, in accordance with Articles 110– 16, 110– 17, and 110– 18 of the
National Electrical Code, ANSI/NFPA 70.

General Site Guidelines

Efficient device operation requires proper site planning and maintenance and proper layout of the
equipment, rack or cabinet, and wiring closet.
To plan and create an acceptable operating environment for your device and prevent environmentally
caused equipment failures:
• Keep the area around the chassis free from dust and conductive material, such as metal flakes.
• Follow prescribed airflow guidelines to ensure that the cooling system functions properly and that
exhaust from other equipment does not blow into the intake vents of the device.
• Follow the prescribed electrostatic discharge (ESD) prevention procedures to prevent damaging the
equipment. Static discharge can cause components to fail completely or intermittently over time.
• Install the device in a secure area, so that only authorized personnel can access the device.
(Continued)
Value
Normal operation ensured in temperature range of 32° F (0° C) through
104° F (40°C)
Nonoperating storage temperature in shipping container: – 40° F (–40°C)
through 158° F (70°C)
Designed to meet Telcordia Technologies Zone 4 earthquake requirements
1705 BTU/hour
51