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 121 of 240
10 Corrective maintenance
The following section details the corrective maintenance tasks that can be carried out on all standard
SBS-900 systems
Health & Safety notices: When carrying out any corrective or planned maintenance, the health
and safety notices shown in section 2 must be observed at all times.
Fibre optic cables: Where fibre optic cables are removed as part of any maintenance
procedure the protective dust caps must be fitted to prevent damage
to the fibre optic terminals or dust ingress within the connector.
10.1 General precautions
Antenna Rotation Safety Notice:
When three-phase power is connected to the system and switched ON, the antenna may
rotate immediately regardless of the RUN command status.
Use the antenna rotation keyswitch, man aloft safety switches or antenna control in the
command and display system to stop antenna rotation in an emergency.
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.
AC supplies: Prior to carrying out any maintenance, the system must be fully isolated and
disconnected from all single and 3-phase AC supplies. This must include the full isolation
of any UPS supported supplies to the equipment.
Caution: The motor/ gearbox assembly must NEVER be dismantled as this would cause
significant loss of oil and damage to oil seals.
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.