3-ASU operating instructions
EST3 System Operation Manual 3.5
building, advising occupants of what actions to take for safe
egress, etc.
Basic response tasks
The basic tasks in responding to an emergency event are:
1. Use the All Call function to announce the arrival of the fire
department, making any necessary announcements.
2. Use the Page to Evac function to reinforce the evacuation of
the occupants in areas receiving the evacuation signal. As an
example, occupants may be directed to follow the evacuation
plan, not to use the elevators, etc.
3. Use the Page to Alert function to notify the areas not in
immediate danger to prepare to evacuate, or that people in
the evacuation area may be entering their area as an area of
refuge.
4. Use the All Call Minus switch to make announcements to
areas of the facility not receiving the Evac or Alert signals,
as required. Stairwells are typical areas accessed using the
All Call Minus page function.
5. The zone page controls may be used to manually select
paging areas.
Paging sequence
Select the areas to receive the page by pressing the appropriate
page function switch(s). The switch’s integral LED will be on
steady when the system is ready to receive the page.
Press the PTT switch on the microphone. The Ready to Page
LED will flash while the pre-announcement tone is sounding.
Begin the announcement once the Ready to Page LED is on
steady. Adjust your voice level so that the far right LED on the
volume meter only flickers occasionally. Release the PTT switch
when the announcement is finished. The system will turn off the
page, and return to its pre-page condition after a short delay.
Note: The local microphone has priority over a telephone page,
which has priority over a remote microphone page.
Each installation is customized. Please refer to your site-specific
documentation to determine which areas of your facility
automatically receives the page, or how to select the areas to
receive the page.
Phone page
If your system is equipped with a firefighter’s telephone circuit,
you can connect the telephone circuit to the page function by
pressing the Phone Page switch. This permits an individual
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