Sun Microsystems Netra ft 1800, Installation Manual

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Chapter 1 Before Installation 7
Adjustable rear flanges can be fitted. They provide a mounting face anywhere
between 400 mm and 500 mm (15.75 inches and 19.7 inches) from the front of the
system (see “Mounting Flanges” on page 13).
The vertical mounting hole pattern should conform to the standard dimensions
given in
TABLE 1-1
.
Loading
The rack must be capable of supporting 230 kg (500 lbs) for a fully configured and
cabled Netra ft 1800.
In Seismic (Earthquake) Risk Zones 3 and 4, it is recommended that the Netra ft 1800
is installed in an appropriate secured seismic rack or cabinet.
Vertical space
The Netra ft 1800 chassis occupies 33RU (57.75 inches) of vertical height.
To allow adequate airflow, the rack must provide a minimum of 38RU (66 inches) of
rackable height, together with minimum inlet and exhaust vents of 2U gap each. If
the rack provides unobstructed vertical airflow via vents of adequate size in the top
and/or bottom panels, then the minimum rack vertical opening required is 37RU
(64.75 inches).
When you fit the Netra ft 1800 into a rack with its red transit plinth in place, allow
1U (1.75 inches) of clearance beneath the plinth. This space permits removal of the
plinth.
Note –
The plinth must be removed to allow fitment of the chassis environmental
filters.
TABLE 1-1
Mounting Hole Pattern Dimensions
Standard Pattern
EIA/RETMA (RU) Repeating pattern of 5/8
inch
, 5/8
inch
, 1/2
inch
IEC917/ETSI (SU) Constant pitch of 25 mm