LaCie 12big Rack Network
Foreword
User Manual
page 6
Rack System Safety
Precautions
The following safety requirements must be
considered when the unit is mounted in a
rack.
✦
The rack construction must be ca-
pable of supporting the total weight
of the installed enclosure(s) and the
design should incorporate stabiliz-
ing features suitable to prevent the
rack from tipping or being pushed
over during installation or in normal
use.
✦
When loading a rack with the units,
fill the rack from the bottom up and
empty from the top down.
✦
Always remove all modules and
drives, to minimize weight, before
loading the chassis into a rack.
CAUTION:
To avoid danger of the rack
toppling over, under no circumstances
should more than one enclosure be drawn
out of the cabinet at any one time.
✦
The system must be operated with
low pressure rear exhaust installa-
tion. (Back pressure created by rack
doors and obstacles not to exceed 5
pascals [0.5mm water gauge]).
✦
The rack design should take into
consideration the maximum oper-
ating ambient temperature for the
unit, which is 35°C.
✦
The rack should have a safe electri-
cal distribution system. It must pro-
vide overcurrent protection for the
unit and must not be overloaded by
the total number of units installed
in the rack. When addressing these
concerns consideration of the elec-
trical power consumption rating
shown on the nameplate.
✦
The electrical distribution system
must provide a reliable earth for
each unit and the rack.
✦
Each Power Supply Unit has an
earth leakage current of 1.4mA.
The design of the electrical distribu-
tion system must take into consider-
ation the total earth leakage current
from all the power supplies in all the
units. The rack will require labelling
with “HIGH LEAKAGE CURRENT.
Earth connection essential before
connecting supply”.
✦
The rack when configured with the
units must meet the safety require-
ments of UL 60950-1 and IEC
60950-1.
