25
Operation Manual
FT1020G3 Rev 2.10.4
4.3
Occupant Warning System (OWS)
4.3.1
Standard OWS Display
The standard Brooks OWS display and control layout is shown in Figure 4 below. For more
details, refer to the standalone OWS manual MA380.
Figure 4 Occupant Warning System Display
Brooks Occupant Warning System is a single evacuation zone system designed to provide
warning to the occupant to evacuate the building in the event of fire or emergency. The
speaker circuit can split up to 48 supervised speaker circuits using 12 x 4 zone splitter
cards SUB999 that can be fitted in FT1020G3, numbers are dependent on the available
space in the standard cabinet, larger enclosures can be used to allow for more options.
The OWS comprises an amplifier, control / indication front, optional zone splitter cards and
speakers / strobes distributed within the building to provide audible and visual warning to
the occupant as well as PA notifications. In addition to the T3, the OWS provides in its
standard configuration alert and evacuation messages as well as electret microphone for
PA purposes. Dynamic hand-held microphone can also be used on request.
The Brooks OWS provides high quality audio output utilising high efficiency class D
amplifier, sizes available: 60W, 120W and 225W
. The front display push buttons /
indicators and its function are explained in Table 10 below.
Note:
fault will be generated if the manual mode is kept active for more than 5 minutes
Table 10 OWS Controls and Indications
17
OWS comprises of 60W, 120W and 225W driven by their own separate power supply.
LED indicators &
Buttons
Indicating
Manual
LED – Yellow
Illuminates to indicate “Manual” activation
Button
Enables manual activation of Alert, Evac or PA.
Alert
LED – Red
Indicates that alert tone/message is active
Button
Manual trigger of the alert tone/message
Evac
LED - Red
Indicates that evacuation tone/message is active
Button
Manual trigger of the evacuation tone/message
PA
LED - Yellow
Indicates that PA is enabled
Button
Enables PA mode
Press to
Talk PPT
LED - Yellow
Indicates PA is broadcasting
Button
Press and hold to broadcast via the electret mic
Fault
Yellow
Indicates common fault in OWS i.e. speaker fault, trigger
fault, strobe fault, etc.
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