LaserPLUS Installation Manual VESDA
®
18 Version 1.5
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.
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