Juniper Networks E-Series - Manual (Page 49)

Safety Guidelines
E-Series Routers
3-3
Safety Guidelines
For your safety, before installing the system, review all safety warnings in
this section.
Temperature Warning: The recommended maximum ambient temperature is
50° C (122° F). The internal temperature of the rack should be considered for safe
operation.
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: Two people are required to lift an E-series router.
Three people are required to install an E-series router in a rack. The equipment is
extremely heavy.
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.
Power Connection 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.
Branch Circuit Caution: Evaluate the overall loading of the branch circuit before
you install any equipment into a rack.