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 89 of 240
SBS-900 Annual planned maintenance record sheet
Inspection sheet
2 of 10
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 sections
of the system handbooks.
Prior to carrying out planned maintenance, the system must be fully isolated from ALL single and 3-
phase AC supplies including any UPS supported supplies.
Caution: When the gearbox and antenna have been operating in strong sunlight or elevated
temperatures, the gearbox casing and antenna surfaces will be extremely hot.
Antenna inspection
Task Description Pass Fail
Cleaning
Clean the antenna facia with a soft cloth moistened in a mild non-
abrasive soap solution.
Note
1
: Cleaning the antenna is important as the system performance can be
degraded if the antenna transmission face becomes obscured by dirt.
Note
2
: The antenna facia must never be painted.
' '
Physical
inspection
Ensure that all securing bolts are tights, secure and show no signs of
severe corrosion or damage.
' '
Check that waveguide couplings are securely fastened and appear to
be waterproof.
' '
The antenna should be checked to ensure that there is no obvious
external damage, cracking or potential faults that could lead to a
general failure of any part of the system.
' '
Check the antenna for signs of excessive vertical end play.
Example of antenna end-play
If the end play is more than +/-10mm please consult with Kelvin
Hughes.
' '
Caution:
' The following tests should only be undertaken when it is safe to manually rotate the antenna
i.e. the system is fully isolated from all sources of power and the antenna can be safely
accessed and reached.
' Do not use excessive force.
' Do not take unnecessary risk when turning the antenna such as reaching too far or leaning
outside safety guardrails.
' This task should be disregarded if there are any safety concerns.
Task Description Pass Fail
Manual
antenna
rotation
Noting the above safety precautions and where safe to do so,
manually rotate the antenna and ensure that it is free from obstruction
and turns smoothly
' '
Antenna
not
accessible
'