User's Manual

SBS
-
900 Shore
Ba
Ba
sed
Radar Systems
Chapter
9
:
Planned maintenance
KH
KH
-
1602 2
issue 1
:
Standard SBS900 Systems Operator & Maintenance Handbook
Page
115
of
240
10
10
-
year maintenance:
Changing the static inverter in the RDU
Inspection sheet
2
of
6
Disconnect the power:
A
ll AC sources
including UPS supported supplies
must be FULLY isolated
and disconnected
from
the Radar Distribution Unit prior to commencing this
or any maintenance
task.
Disconnection:
Ensure
the system is fully disconnected from all
AC
power sources
Disconnect/ unplug PL4
: This is the 3
-
phase supply to the antenna motor and is located on the
base of the Radar Distribution Unit.
This must not
be reconnected until the replacement inverter
has been configured
The main screw terminals protected
by a removable
safety
cover.
This is
removed by gently pushing a small
screwdriver into the locking tab as
shown.
The 2
nd
nd
nd
lower protective tab can the
n
be
removed
IMPORTANT: Prior to
disconnecting any cables make
a full note of the positions
/ pin
numbers
, polarity and cable
marker
s
of
ALL
cables
being
removed
The cable pin outs are
The cable pin outs are
not shown
in this document.
Having noted the cable locations,
d
isconn
ect all cables from the
inverter.
Upper t
erminal protection cover
fitted (left
) and removed (right)
Lower t
erminal protection cover
fitted (left
) and removed (right)
Removal
and replacement
The inverter mounted onto a plate
that is held in the RDU chassis by 4
bolts.
Removed and retain these bolts
as
they are required for refitting.
The inverter can now be removed
from the RDU.