SBS-800 Series Operator & Planned Maintenance Handbook
Chapter 9
: Planned Maintenance
KH-1601-2 Issue 6
Page 68 of 80
SAFETY SWITCH TESTS
SYSTEM CONFIGURATION
The following tests should be carried out with power restored to the system and the transceiver
placed into RUN.
WARNING:
When carrying out the following test, do not contravene any health and safety precautions regarding
working aloft, antenna or electrical safety.
Task
Description
Pass
Fail
Antenna rotation
keyswitch
- Place the
antenna rotation
keyswitch (located on the
door of the Radar Distribution Unit) to OFF
- The yellow LED on the front panel of the radar
distribution unit will flash
- Ensure that the system stops transmitting, antenna
rotation is stopped and that the appropriate system
alarms are generated
- Return to switch to the
free
position and ensure that
normal operation is resumed
☐
☐
Man aloft switch
(MAS)
- Change the
man aloft switch
position to the
OFF
position
- Ensure that the system stops transmitting, antenna
rotation is stopped and that the appropriate system
alarms are generated
- Return to switch to the
free
position and ensure that
normal operation is resumed
☐
☐
Hut door switch
(
Where fitted)
- Where possible
and SAFE to do so
, open the hut door
- Ensure the appropriate system alarms are generated
- Close the HUT door and ensure that normal operation
is resumed
☐
☐
Not fitted
☐
Antenna platform
switch
(
Where fitted)
- Where it is possible
and SAFE to do so
, open the
antenna platform access door
- Ensure the appropriate system alarms are generated
- Close the antenna platform access door and ensure
that normal operation is resumed
☐
☐
Not fitted
☐
RDU fan
operation
- Open the door to the RDU
☐
☐
WARNING
Lethal single phase and antenna motor AC supplies are
present within the Radar Distribution Unit.
- Visually confirm that the two fans on the dual
redundant power supply are running
END OF PLANNED MAINTENANCE TASKS
