VESDA VESDA Maintenance Guide
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8.2 VESDA VLC
8.2.1 Replacing the VESDA VLC Filter Cartridge
The service interval of an air filter depends upon the environment. You can use the LCD Programmer or Xtralis
VSC Software to change the service interval for filters. The system will generate a minor fault when the filter
has reached 80% and an urgent fault when it reaches 120% of its capacity. We recommend that the
installation date and replacement date are written on the air filter cartridge label as a physical reminder of when
the next service is expected.
Note: The detector must have the power turned on when the air filter cartridge is being replaced.
Replacement Procedure
1. Open the front cover
2. Locate the air filter cartridge (A), inside the detector compartment, as indicated in Figure 8-15 below.
3. Undo the recessed philips head filter screw (B) in Figure 8-15 below.
4. Lift out the air filter cartridge.
Figure 8-15: Replacing the air filter cartridge in VESDA VLC detectors
5. Insert a new air filter cartridge (A) in Figure 8-15 above.
6. Tighten the filter screw (B) in Figure 8-15 above.
7. Reset the filter counter by connecting a LCD programmer or a PC with Xtralis VSC software to the
programming socket.
8. Using a PC only (applicable to RO version) or a PC with a PC-Link HLI (Applicable to VN version only),
reset the filter by entering your user level and PIN number to Log ON to the detector then Initiate the
Reset Filter Settings command located under the device menu.
9. Close up the detector.