Ampac EvacU, Technical Manual

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Page 9
EWCIE Technical Manual
Indicator flashing at ½ Hz when the evacuate signal has been activated as a result of the
EWCIE responding to an alarm signal (from a connected fire alarm control panel) or
operation of the EVAC control. If the EWCIE is in the TEST condition, the evacuate signal
is NOT broadcast.
When multiple amplifiers are fitted, the Alert and Evac indicators are used for ALL CALL only. Hence
when all amplifiers are broadcasting the Alert signal, then the Alert indicator will be flashing, otherwise
it will be off. Similarly, the Evac indicator will be steady when all amplifiers are broadcasting the Evac
signal.
The buzzer sounds to announce a fault or alarm signal from the connected fire alarm control
panel. Buzzer also used to provide audible feedback for key presses of the controls (one
beep for a valid key press and a double beep for an invalid key press). There is no audible
feedback on the PTT control.
4.4 Access Levels
Access levels are used to manage access to the front panel controls of the EWCIE.
Controls at access level #1 shall be accessible without special procedures
Controls at access level #2 shall be restricted by a special procedure.
In most cases the EWCIE will be mounted in the same cabinet as the fire alarm control panel, and the
cabinet will have an outer door. A 003 key is required to unlock the door. Hence all controls on the
EWCIE will be at access level #2.
In the rare case where the cabinet does not have an outer door, jumper K3 (see section 4.1 Connectors)
has been provided to connect a key switch. When the key switch is ON (outputs shorted together), then
the controls are enabled.
4.5 Controls
4.5.1 Press to talk
The Front Panel Control and Indicator card is fitted with an on-board microphone.
The Press to Talk (PTT) button - While pressed, the microphone is live (muting any other
active audio source). The PTT control is operational at access level 2.
While the microphone is live, the PTT indicator (red LED) will be illuminated and any Alert
or Evacuate LEDs will be extinguished. The PTT control on the microphone is the highest
priority of all on-board controls. It shall override all other audio signals that are currently being
broadcasted to the emergency zone.
4.5.2 Silence Buzzer
Silences the EWCIE’s buzzer. Does not affect the buzzer of the connected fire alarm
control panel.
Silencing the buzzer on the LoopSense or FireFinder PLUS fire alarm control panel will silence the
buzzer on the EWCIE.

Note: Pressing the buzzer silence control for 3s or longer will initiate a Lamp Test on the Front
Panel Control and Indicator card. During the Lamp Test, all indicators shall go steady and the buzzer
shall sound continuously.