Router Clearance Requirements For Airflow And Hardware Maintenance - Juniper MX204 Hardware Manual

MX204 3D Universal Edge Router Hardware Guide
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MX204 Router Clearance Requirements for Airflow and Hardware Maintenance
34
Figure 16: Airflow Through MX204 Chassis
Ports
MX204 Router Physical Specifications on page 29
MX204 Site Preparation Checklist on page 35
MX204 Installation Summary on page 63
MX204 Cooling System Description on page 11
When planning the installation site, allow sufficient clearance around the rack (see
Figure 17 on page 35):
For the cooling system to function properly, the airflow around the chassis must be
unrestricted. Allow at least 6 in. (15.2 cm) of clearance between side-cooled routers.
Allow 2.8 in. (7 cm) between the side of the chassis and any non-heat-producing
surface such as a wall.
For service personnel to remove and install hardware components, there must be
adequate space at the front and back of the router. At least 24 in. (61 cm) are required
both in front of and behind the router. NEBS GR-63 recommends that you allow at
least 30 in. (76.2 cm) in front of the rack and 24 in. (61 cm) behind the router.
To accommodate power cable bend radius at the rear of the chassis and the interface
cable bend radius at the front of the chassis, provide at least 2.75 in. (7 cm) at the rear
and 3.5 in. (8.9 cm) at the front.
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