2.
Loosen
the
two
wing
nuts
2
.
3.
Loosen
the
wing
nut
3
and
slide
the
bracket
toward
the
back
of
the
rail.
4.
Remain
at
the
back
of
the
rack
holding
the
support
rail
in
position
in
the
rack,
and
then
install
and
fully
tighten
the
two
mounting
screws
5
.
5.
Go
to
the
front
of
the
rack.
6.
Extend
the
support
rail
toward
the
front
of
the
rack.
Note:
Hold
the
support
rail
in
position
until
you
have
completed
step
7.
Ensure
that
the
support
rail
is
horizontal
(a
level
might
be
useful
here).
8.
Install
the
two
mounting
screws
1
into
the
third
and
fourth
holes
of
the
support
rail
flange.
Fully
tighten
the
screws.
9.
Fully
tighten
the
two
wing
nuts
2
.
10.
Loosen
the
wing
nut
3
and
slide
the
bracket
toward
the
front
of
the
rail
as
far
as
it
will
go,
with
the
front
edge
of
the
bracket
against
the
back-end
of
the
front
support
rail.
1
2
4
3
5
Figure
83.
Installing
support
rails
for
a
2145
UPS
into
the
rack
122
IBM
System
Storage
SAN
Volume
Controller:
Hardware
Installation
Guide
Summary of Contents for 2145UPS-1U
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