Maintenance Handbook

SBS-800 Series Operator & Planned Maintenance Handbook
Chapter 4: Switch ON, OFF & Emergency Stop
KH-1601-2 Issue 6
Page 29 of 80
4.3 Switch OFF
SWITCH OFF
The following describes how to switch OFF the SBS-800 system for operational purposes.
The following does not include the switch OFF/shut down procedures for the track extractor, optional
service display or external equipment attached to the system.
SYSTEM ISOLATION
Please refer to the maintenance section for details on isolating the system from the mains supplies for
maintenance purposes or working aloft.
CAUTION
The following details switching the SBS-800 system OFF for operational purposes only.
The following must not be used as a primary means of system isolation for maintenance procedures
or working aloft.
SWITCH TO
STANDBY
Using the service display, third party command and control system or the
Standby/Run switch on the RDU (local control only), place the system into
Standby mode.
RADAR
DISTRIBUTION
UNIT
SAFETY
SWITCHES
Place the Antenna Rotation keyswitch on the front
of the Radar Distribution Unit into the OFF position.
This removes all AC power to the turning
unit/gearbox SharpEye™ transceiver and the
Antenna sub-system.
As an additional safety precaution, when in the
OFF position the key can be removed.
Keyswitch on door of RDU
WARNING
The Antenna Rotation Keyswitch does not control or isolate the Anti-
Condensation Heater supply.
See section 5 for application details.
AC POWER
TO THE
RADAR
DISTRIBUTION
UNIT
Place all three breakers within the Radar Distribution Unit to the OFF position.
 The Radar Distribution Unit is switched OFF but is not isolated from the AC
input supplies.
 The transceiver/gearbox is switched OFF, antenna rotation and system
transmission is stopped.
 The LED indicators on the breakers remain illuminated.
Note
GEARBOX
HOUSING ACH
(Anti-Condensation
Heaters)
Where connected and required, switch ON the independent AC supply to the
anti-condensation heaters using the dedicated AC breaker.
See Section 5 for application details.
WARNING:
With the system switched OFF as described in the above procedure, AC supplies are still present
within the Radar Distribution Unit.
The system must be fully isolated and lock off from ALL AC supplies prior to opening any part of the
unit or carrying out any tasks on the system.
Note: The LED indicators located on power breakers are an indication that mains voltages are
present. They are NOT an indication that the breakers are switched ON.