Alphatron ALPHA BNWAS Panduan Pemasangan & Pengoperasian - Halaman 9

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ALPHA BNWAS

The AlphaBNWAS is easily operated by the buttons on the front panel.

Changes to time and on/auto/off mode can only be made when the key

switch is in the vertical position. The key cannot be removed when the

key is in the vertical position.

The 3 to 12 minute timer can be adjusted by pushing the time select

button. The on/auto/off mode can be selected by pushing the on/auto/off

select button. Activating the AlphaBNWAS will start the 3 to 12 minute

timer until it exceeds. The "reset" LED will start blinking and the internal

buzzer will sound for half a second giving a pre-alarm.

After 15 seconds the internal buzzer will pulsate continuously and the

relay contact for the (optional) bridge siren will sound.

If the officer on the bridge does not respond by operating the reset button

within 15 seconds, the backup officer will be alarmed and "call officer" LED

will light.

When the backup officer does not respond within the preset time (90-180

seconds) the entire crew will be notified by activating the general alarm.

This last stage can be adjusted with the 16-position switch (0-F) behind

the removable front panel.

The time is adjustable from 90 to 180 seconds in steps of 6 seconds

(0=90 , F=180 seconds). When the "Emergency" button is operated the

AlphaBNWAS will switch to "call officer" stage without activating acoustic

signalling on the bridge. The LEDs on the front panel can be dimmed by

holding the reset button for a few seconds.