Clearance Requirements For Airflow And Hardware Maintenance On Acx4000 Routers - Juniper ACX4000 Hardware Manual

Table 21: Site Electrical Wiring Guidelines
Site Wiring Guidelines
Factor
Electromagnet If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly
ic from lightning or radio transmitters, seek expert advice.
compatibility
Some of the problems caused by strong sources of electromagnetic interference (EMI) are:
•
Destruction of the signal drivers and receivers in the device
•
Electrical hazards as a result of power surges conducted over the lines into the equipment
Clearance Requirements for Airflow and Hardware Maintenance on
ACX4000 Routers
When planning the installation site, allow sufficient clearance around the rack (see
75):
• For service personnel to remove and install hardware components, allow at least 2.16 in. (5.5 cm) in
front of the router.
• The rack or cabinet must have an adequate supply of cooling air.
• Ensure that the cabinet allows the chassis hot exhaust air to exit from the cabinet without
recirculating into the router.
• When deploying the router in harsh environments where the router may operate between 131° F
(55° C) and 149° F (65° C), allow a 1–rack unit (U) gap above and below the router.
(Continued)
Figure 15 on page
74