VESDA VLC, Maintenance Manual

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VESDA VESDA Maintenance Guide
www.xtralis.com 15
7 Annual Testing
Local code guidelines may state that system and detector tests be conducted on a regular basis. Xtralis
recommends that such tests be conducted, at least, annually. However, there are some environments in
which it is necessary to conduct maintenance and testing more frequently, refer to Appendix B on page 49.
Notes:
l
A sample maintenance and testing log is provided in Appendix C on page 51.
l
Xtralis strongly recommends that all persons who install, commission, service and maintain VESDA
systems attend the VESDA accreditation training. Please contact your local Xtralis office for more
information.
7.1 Detector Tests
Check the following items to ensure that performance is still satisfactory:
1. Recorded faults - If any faults are present, record and rectify them before beginning any maintenance.
2. Power supply - Ensure that the input voltage is within the operating requirements.
3. Backup battery (if installed) - Check that the batteries are fully charged and the charging voltage is
functioning correctly.
4. Airflow - Check the airflow for each sampling pipe in use. Compare to previous site visit data to ensure
that there is no degradation in performance due to pipe blockages, leaks, breaks or contamination.
5. Smoke test - Inject an appropriate level of smoke into the required sampling holes.
6. Record Transport Time - This figure should be consistent with your previous maintenance visit or your
original commissioning documentation. Refer to your local standards for allowable variations.
7. Local detector display - Ensure that the detector's front panel display responds appropriately to any faults
and smoke levels, within the time specified in your local code guidelines.
8. Relay performance - Ensure that the detector's fire and fault relays are functioning correctly.
9. Remote detector display - Ensure that any associated remote detector displays (if installed) respond
appropriately to any faults and smoke levels, within the time specified in your local code guidelines.
10. Record results - Xtralis recommends that you photocopy the sample maintenance log in Appendix C on
page 51 and record all results on the copy. Store the log in an appropriate known location on-site.
11. Compare all results to previous recorded tests - Ensure that there is no degradation in performance. If a
noticeable change is observed, maintenance of the detector and/or sampling pipe network may be
necessary.
12. Schedule next visit - Determine the appropriate time for the next site visit by referring to Appendix B on
page 49.
7.2 System Fire Panel Notification Tests
Your detector alarm and fault tests should register on the monitoring system, within a time frame consistent
with local standards. System notification results should be recorded in the detector maintenance log.