VESDA
®
LaserSCANNER Installation Manual
Version 1.3
19
7. Power
Up
Caution Powering up the system must be done by VESDA accredited personnel.
7.1 Power Up the System
(a)
Disconnect the power terminals
from the Termination card before turning ON the power.
(b) Turn ON the power to the detector.
(c) Check the voltage at the
Power
terminals is
24VDC
+/-6V. If the voltage is out of
specification, turn OFF the power and troubleshoot.
(d) If the measured voltages are within specification, then reconnect the terminal plugs and
turn on the power.
(e) Repeat measurements for other detectors connected onto the same power supply routing.
(f) The system takes approximately 15 seconds to power up.
(g) If the system fails to power up:-
•
Check all power wires are secured to its terminals.
•
Check the polarities of the power wires are correctly terminated.
h) On
power
up.
The aspirator starts up and air is felt flowing out of the exhaust port.
If a Programmer module is fitted, the VESDA name will appear on the LCD screen.
If a Display module is fitted, the following indicators are lit:-
•
Fire Alarm Threshold indicators
•
Smoke Threshold Levels on Bar Graph
•
2 digit indicator
•
Various fault indicators if there are any faults
•
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:
The detector may show faults immediately after power up and this is normal. Reset the
detector by pressing the RESET switch on the front cover of the detector to unlatch the
relays and fault lights. The fault lights on the front cover will light up and this is normal.
Proceed to section 8.
