Normalise The Air Flow And Clearing Air Flow Faults - VESDA LaserSCANNER VLS-200 Installation Manual

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8.3 Normalise the Air Flow and Clearing Air Flow Faults

Note: This procedure normalises the airflow for all pipes in use and takes approximately 11 minutes.
It is important to correctly select the pipes in use before Normalising. Check the airflow is
approximately 100% when completed.
Procedure
• Select Setup by Zone ↵ Zone
Set the Air Pipes in
use for sampling.
• Set the pipes in use for sampling.
• Select Setup by Zone ↵ Zone
Set the Aspirator
Speed.
• Set the Aspirator RPM value by
• Select Setup by Zone ↵ Zone
Normalise the
Airflow. Wait for 11
minutes to
complete
Normalising.
• Select Setup by Zone ↵ Zone
Check the Airflow
after Normalising is
approximately
100%.
OR
• Select Setup by Zone ↵ Zone
• Select Setup by Zone ↵ Zone
Reset the Detector.
Note: Detectors with software version 3.x.x and above will have a Normalising fault (77) reported
during the Normalising process.
Version 1.3
LCD Programmer
Number ↵ Detector ↵ Air Flow ↵
Flow Control ↵
= Selected.
Number ↵ Detector ↵ Air Flow ↵
Flow Control ↵
using the arrow keys. Set the
value as per the ASPIRE
calculation for that site.
Number ↵ Detector ↵ Air Flow ↵
Normalise ↵ Normalise Start ↵
Number ↵ Detector ↵ Air Flow ↵
Normalise ↵ Current % Flow
Number ↵ Detector ↵ Status ↵
Number ↵ Detector ↵ Zone
Control ↵ Reset Start ↵
LaserSCANNER Installation Manual
PC Programmer
• Select Device Tree from View
menu
• From the Device tree window, click
on all the + sign to expand the
tree.
• Double click on detector to open a
window with multiple tabs.
• Click on the Airflow tab when
window appears.
• Select the pipes in use.
= Selected.
• Click on the Apply button.
• In the same window that displays
the Airflow tab, click on the
Aspirator tab.
• Change the Aspirator RPM to the
value as per the ASPIRE
calculations.
• Click on the Apply button.
• Select the Normalise Airflow
command from the Device menu.
• Check the Active Events List
displays the alarm.
• Check in the Device tree window,
the word Normalising appears next
to the Detector being Normalised.
• Double click on the Detector being
Normalised.
• Click on the Current Flow tab in
the window with multiple tabs.
• Click on the Reset icon or select
Reset from the Zone menu.
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