VESDA by Xtralis VESDAVLSProduct Guide
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9 Starting Up
After installing the VESDA VLS detector it is necessary to power up the system:
The system takes approximately 15 seconds to power up
If the system fails to power up, check all power wires are secured to its terminals and the polarities of the
power wires are correctly terminated
On power up:
l The aspirator starts up and air is felt flowing out of the exhaust port
l If a programmer module is fitted, the word “VESDA” will be displayed
l If a Display Module is fitted, the following indicators are lit:
l Fire Alarm Threshold indicators
l Smoke Threshold indicators on bar graph
l Two digit numerical display
l Various fault indicators if there are any faults
l System OK indicator if there are no faults
If any of the above does not happen, contact your commissioning engineer or distributor to troubleshoot.
Note: It is normal for the detector to display troubles immediately after power up. Reset the detector by
pressing the reset button on the front cover of the detector to unlatch the relays and fault LEDs. The
fault LEDs on the front cover will illuminate. Proceed with the preliminary systems check.
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