User's Manual

SBS-900 Shore Based Radar Systems
Chapter 10: Corrective maintenance
KH-1602-2 issue 1: Standard SBS900 Systems Operator & Maintenance Handbook
Page 141 of 240
10.6 Advanced antenna sub systems
Enhanced ATU and antennas: The corrective
maintenance procedures for the advanced
ST1-F10/ 20 Antenna Turning Unit (ATU) and
range of antennas are not detailed in this
section. ST1-F20 Antenna Turning Unit & antenna
Please refer to the installation and maintenance handbook supplied with the equipment for full details
on corrective maintenance.
Spares: Where required, only Kelvin Hughes approved spares must be used. The use
of unapproved spares can invalidate the warranty status of the unit or lead to
a failure of the system.
Adverse weather: It is strongly recommended that the gearbox inspections noted in section 9.4
are carried out at the earliest safe opportunity after the system has been
exposed to severe or adverse weather conditions.
Health & safety: All safety warnings for the system noted in section 2 must be observed at all
times when inspecting and maintaining any part of the SBS system or its
associated sub systems.
System isolation: Please refer to section 9.3 page 87 for details on isolating the system from all
sources of AC power.
WARNING
Lethal voltages are present within the equipment.
All maintenance procedures must be carried out with all relevant power sources switched
OFF, fully isolated and disconnected.
Caution: When the system has been operating in strong sunlight or elevated
temperatures, gearbox casings and antenna surfaces will be extremely hot.