User's Manual

SBS
-
900 Shore
Ba
Ba
sed
Radar Systems
Chapter
10
10
:
Corr
ective maintenance
KH
KH
-
1602 2
issue 1
:
Standard SBS900 Systems Operator & Maintenance Handbook
Page
219
of
240
Fan
replacement
Health and safety notice
WARNING
:
Prior to
commencing any maintenance
procedure
, users must familiarise
themselves with the health
&
safety warnings noted in the planned maintenance
and
health and safety
section
s
of the system handbook
.
Prior to carrying out planned maintenance, t
he system must
be
fully isolated and
disconnected
from the single and 3
-
phase AC supplies
. See
system isolation
in the
planned maintenance section of the system handbook.
The Toshiba
VF
VF
-
nC3
inverter is
located with
in the Radar
Distribution Unit (RDU).
The inverter is
a sealed unit that,
with the exception of the fan,
contains no field serviceable or
repairable parts.
The unit must never be dismantled
or repaired in the field.
Toshiba VF
nC3
inverter
Radar distribution unit
Warning:
When powered
lethal voltages are present
within the inverter
.
Inverter removal:
To replace the fan, the inverter will need to
b
e removed from the Radar Distribution
Unit.
See section
9.6.2
page 107
for
the inverter removal instructions.
When the inverter has been
removed, the fan can be
accessed at
the top of the unit.
The fan assembly is retained by a
single clip which is released by
pressing towards the centre of the
fan.
The fan assembly can now be
removed.
Disconnect the power connector
from the inverter.
Fan assembly
on top of inverter
Fan power connection
Noting the orientation and direction, the fan can now be removed from the plastic case and the
replacement fan fitted.
The fan is retained in the case by 4 plastic clips.
The fan assembly
can now be reconnected/ refitted and the inverter replaced into the RDU.