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
108
of
240
5
-
year maintenance:
Changing the static inverter in the RDU
Inspection sheet
2
of
6
Single phase input inverter removal and replacement
Disconnect the power:
As noted in the health and safety warning, all AC sources must be
FULLY isolated
and
disconnected
form the radar distribution unit prior to commencing this task.
Disconnection:
-
Ensure the system is
fully
isolated from all sources of power including UPS supplies
-
Disconnected from all power sources from the RDU
-
Disconnect PL4 (3
-
Phase out
to antenna motor) from the base of the RDU
Disconnect the inverter
IMPORTANT:
Prior to
disconnecting
any cables,
make a
note of the
cable
positions
and
cable numbers as these are NOT
shown in this handbook
T
he
main
screw terminals
c
a
n be
accessed by
removing the covers as
shown.
Noting the cable numbers and
locations, d
isconnect all cables to the
inverter.
VF
VF
-
nC3 terminal positions (top and bottom)
Terminal cover removal
Replacement inverter
Kelvin Hughes spare part number
for Toshiba VF
-
nC3:
45
45
-
690
-
0066
001
Caution:
The use of
alternative
s
or unapproved spares
invalidate
s
the warranty status of the unit and can effect or inhibit
system performance.
Removal
and replacement
The inverter is retained into the RDU
chassis by 2 bolts as shown.
Remove and retain these bolts.
The inverter can be removed from the
RDU.
The replacement inverter can now be
installed using the same mounting
points and fasteners.