VESDA VLC, Руководство по обслуживанию

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VESDA VESDA Maintenance Guide
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8.4.2 Replacing the VESDA VLI Secondary Foam Filter
To maintain the operational integrity of the detector, it is recommended that the secondary foam filter be
replaced every 4 years, or when a filter fault occurs or more often for environments that experience high levels
of contamination.
Remove the Secondary Foam Filter
1. Set the detector to Standby mode.
2. Remove the front cover.
3. Remove two secondary foam filter screws (A).
4. Remove the secondary foam filter (B).
A
B
Figure 8-21: Secondary Foam Filter Replacement
Reinstall the Secondary Foam Filter
To reinstall the Secondary Foam Filter, follow the removal procedure in reverse order and execute the Reset
Secondary Filter life command in Xtralis VSC.
Caution: Do not reinstall a used filter.
8.4.3 Replacing the VESDA VLI Aspirator
Ensure the area surrounding the aspirator is clear of dirt and debris prior to replacement.
Care must be taken during aspirator replacement. The aspirator must be correctly seated; this is essential to
ensure gaskets are not damaged or dislodged from the underside of the aspirator.
Remove the Aspirator
1. Set the detector to Standby mode.
2. Remove the front cover.
3. Power down the detector by removing the 24V input.
4. Remove the Intelligent Filter (Figure 8-22). Refer to Section 8.4.1 on page 32 for further information.