User's Manual

SBS-900 Shore Based Radar Systems
Chapter 9: Planned maintenance
KH-1602-2 issue 1: Standard SBS900 Systems Operator & Maintenance Handbook
Page 94 of 240
SBS-900 Annual planned maintenance record sheet
Inspection sheet
7 of 10
Man aloft switch
Task Description Pass Fail
Physical
inspection
Ensure that all fastenings are secure and show no signs of severe
corrosion or damage.
' '
Switch
action
Ensure the switch operation is smooth and that both the Free and
OFF positions can be selected.
' '
Earth
bonding
and
continuity
Test the earth bonding conductivity by attaching one lead of the test
equipment
note1
to chassis/ earth and the other to an unpainted part of
the equipment under test.
Check the earth bonding for continuity, resistance should not exceed
0.1 ohms. If test fails, investigate the bonding, rectify and repeat the
test.
Note
1
: Safety ohmmeter, bridge Megger or Multimeter.
' '
55-100-0436-001 Static desiccator
Task Description Pass Fail
Physical
inspection
The clear wall of the static desiccator unit allows visual
inspection of the desiccant condition.
As moisture is adsorbed the desiccant colour will change
to either:
Deep blue (dry) to pink/white (wet).
or
Orange (dry) to purple (wet).
When 80% of the desiccant material has changed
colour, the unit should be replaced.
To prevent moisture from entering the breather hole, the
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that contains the breather hole pointing downwards.
Maintenance frequency note: In areas of high humidity it may be
necessary to increase the inspection period of the desiccant.
Static
Desiccator
' '
Restore power to the system
On completion of the above maintenance tasks and noting that the following will cause antenna
rotation and system transmission, restore power to the system.
Security
switches
Place the Antenna rotation and man aloft switches in the FREE
positions.
Antenna
rotation
'
Man aloft
'
AC
Breakers
Switch the single and three-phase breakers within the RDU ON.
Caution: This will cause the antenna to rotate
'
Remote
control
Place the Remote/ Local switch on the RDU to the Local position. '
Test Test the system and ensure full functionality. '