Safety guidelines, Preparing the equipment racks – Juniper Networks E-Series User Manual
Page 59
Rack-Mounted Installation
E-Series Routers
4-5
Safety Guidelines
Observe the following safety guidelines when mounting the router in a
rack.
Rack Installation Warning: Install equipment in the rack from the bottom upward.
This will maintain the stability of the rack and reduce the chance of the rack’s
tipping over.
Heavy-Equipment Warning: Three people are required to install the E-series
router in a rack: two to lift the system into position and one to screw it to the rack.
Branch Circuit Warning: Evaluate the overall loading of the branch circuit before
you install any equipment into a rack.
Ground (Earth) Warning: Connect the E-series router or rack to ground (earth),
and ensure that a reliable grounding path is maintained in the rack.
Lightning Activity Warning: Do not work on the system or connect or disconnect
cables during lightning activity.
DC Power Disconnection Warning: Before powering on the E-series router,
remove power from the DC circuit by deactivating the circuit breaker on the panel
board that services the DC circuit.
Servicing Unit Warning: Before servicing the E-series router, turn off the power.
Jewelry Removal Warning: Remove jewelry (including rings, necklaces, and
watches) before working on equipment that is connected to power lines. Metal
objects heat up when connected to power and ground and can cause serious
burns or become welded to the terminals.
Metal Objects Warning: Do not insert any metal object, such as a screwdriver,
into an open slot or the backplane. Doing so may cause electric shock and serious
burns.
ERX-310 Router Power Cord Warning: The ERX-310 router AC model has more
than one power-supply cord. Disconnect 2 power cords BEFORE servicing to
avoid electric shock.
Preparing the Equipment Racks
Following your installation plan, use a tape measure and marking pen to
measure and mark space on each equipment rack for each E-series router
component. Horizontal spacing should follow NEBS requirements. If you
choose not to install a plenum, be sure to include 2 U of space between
the each chassis to allow for proper exhaust. A plenum, however, is highly
recommended.