Connection To Building Structure; Clearance Requirements For Airflow And Hardware Maintenance; Routing Node Environmental Specifications; Figure 27: Chassis Dimensions And Clearance Requirements - Juniper Internet Router M160 Hardware Manual

M160 Internet Router Hardware Guide

Connection to Building Structure

Always secure the rack to the structure of the building. If your geographical
area is subject to earthquakes, bolt the rack to the floor. For maximum
stability, also secure the rack to ceiling brackets. For more information, see
"Rack-Mounting Requirements and Warnings" on page 240.

Clearance Requirements for Airflow and Hardware Maintenance

When planning the installation site, you need to allow sufficient
clearance around the rack (see Figure 27):

Figure 27: Chassis Dimensions and Clearance Requirements

24 in. (61 cm) clearance
for maintenance
Front of chassis

Routing Node Environmental Specifications

Table 15 specifies the environmental specifications required for normal
router operation. In addition, the site should be as dust-free as possible.
Dust can clog air intake vents, reducing cooling system efficiency. Check the
vents frequently, cleaning them as necessary. For more information, see
"Maintaining Hardware Components" on page 127.
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Routing Node Environmental Specifications
For the cooling system to function properly, the airflow around the chassis
must be unrestricted. Figure 20 depicts the airflow in the router.
For service personnel to remove and install hardware components, there must
be adequate space at the front and back of the router. Allow at least 24 in.
(61 cm) both in front of the router and behind it.
Top down view
29 in.
(73.6 cm)
19 in. 19 in.
(48.3 cm) (48.3 cm)
Center rack-mount ears
24 in. (61 cm) clearance
for maintenance
6 in. (15.2 cm) clearance
for airflow
Rear of chassis
17.5 in.
(44.5 cm)
6 in. (15.2 cm) clearance
for airflow