18
Safety guidelines
IMPORTANT:
The enclosure must be grounded before applying power.
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The plug on the power supply cord is used as the main disconnect device. Ensure that the socket outlets are
located near the equipment and are easily accessible.
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2U enclosures are intended to operate with two PCMs.
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5U84 enclosures are intended to operate with two PSUs.
Figure 4 Power Cooling Module Warning label
CAUTION:
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Do not remove the covers from the enclosure or any of the modules—there is a danger of electric shock inside.
Do not attempt to disassemble the rear sub-chassis from the enclosure. Return any damaged components to
your supplier for repair.
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When bifurcated power cords (Y-leads) are used, these cords must only be connected to a power supply range
of 200–240 VAC.
IMPORTANT:
The RJ-45 socket on IOMs is for the Ethernet connection only and must not be connected to a
telecommunications network.
Rack system safety precautions
The following safety requirements must be considered when the enclosure is mounted in a rack.
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The rack construction must be capable of supporting the total weight of the installed enclosures. The design
should incorporate stabilizing features suitable to prevent the rack from tipping or being pushed over during
installation or in normal use.
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When loading a rack with enclosures, fill the rack from the bottom up; and empty the rack from the top down.
•
Always remove all power supply modules to minimize weight before loading the enclosure into the rack.
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Do not try to lift the enclosure by yourself.
CAUTION:
To avoid danger of the rack falling over, under no circumstances should more than one enclosure be
moved out of the cabinet at any one time.
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The system must be operated with low pressure rear exhaust installation. The back pressure created by rack
doors and obstacles is not to exceed 5 pascals (0.5 mm water gauge).
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The rack design should take into consideration the maximum operating ambient temperature for the enclosure,
which is 35ºC (95ºF) for RBODs and 40ºC (104ºF) for EBODs.
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The rack should have a safe electrical distribution system. It must provide over-current protection for the
enclosure and must not be overloaded by the total number of enclosures installed in the rack. When addressing
these concerns, consideration should be given to the electrical power consumption rating shown on the
nameplate.