User's Manual

SBS
-
900 Shore
Ba
Ba
sed
Radar Systems
Chapter
10
10
:
Corrective maintenance
KH
KH
-
1602 2
issue 1
:
Standard SBS900 Systems Operator & Maintenance Handbook
Page
214
of
240
Fan
replacement
Health and safety notice
Fan replacement notes:
When used under normal operational conditions, the fan has an operational
life of 10 years and should only need replacing if it fails. Due to the drying of the electrolytic
capacitors, the entire inverter must be replaced every
10 years
.
WARNING:
Pr
Pr
ior to commencing any maintenance procedure, users must familiarise themselves
with the health & safety warnings noted in the planned maintenance and health and safety sections
of the system handbook.
Prior to carrying out planned maintenance, the 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.
Warning:
When the RDU is switched ON
lethal voltages are present within the inverter.
The VF
-
S1
S1
5
inverter is located with
in the
Radar Distribution
Unit (
RDU).
Repair:
The inverter is a sealed unit that contains
NO
NO
field
serviceable or repairable parts.
The unit must never be dismantled or
repaired in the field.
Inverter removal:
To replace the fan, the inverter will need
to
b
e removed from the radar distribution unit.
See section
9.6
page
100
for the inverter removal instructions.
Fan replacement:
When the inverter has been removed, the
fan can be accessed at the base of the unit.
Radar
distribution unit
Removal:
The fan assembly is
retained by two clips which are
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 removal
Fan
power
connection
Replacement:
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.
Fan removed from case
Fan noting airflow direction