Xtralis VESDAnet Product Manual page 18

Xtralis VESDA
VESDAnet Interface Card Product Guide
®
Sampling pipe functionality
The VLF has a single sampling pipe as opposed to four on the VLP. The LCD
Programmer shall indicate the VLF pipe as the VLP Pipe 1.
This means that the only sampling pipe that can be enabled for use is Pipe 1.
Setting Aspirator Speed
The aspirator on the VLF-VN has a fixed speed and cannot be changed. The
LCD Programer has a function that allows VLP aspirator speed to be
changed. This command is visible with the VLF but no change can be made to
its speed.
Normalizing Airflow
The VLF detector airflow normalisation process is instantaneous compared to
the VLP, VLS and VLC detectors. The best way to check whether airflow
normalization was successful is to check the current flow for the Pipe. It
should read close to 100%.
Filter Replacement
When the filter in the VLF has been replaced the "Filter Old" fault needs to be
cleared. This can be done from VSC by sending the "Filter Insertion"
command with the option "New Filter" selected.
If using the LCD programmer, it will detect that the filter has been changed
and ask if the inserted filter is new or the original. Select the appropriate
option
.
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