VESDA VESDA Maintenance Guide
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1 Introduction
This Maintenance Guide provides essential information for service personnel who are maintaining VESDA
systems. It includes suggestions for a maintenance schedule and instructions on servicing an installed
VESDA detector.
Knowledge about local fire regulations, electrical codes and standards is assumed. Anyone responsible for
maintenance should possess this knowledge.
Note: Xtralis strongly recommends that all persons who install, commission, service and/or maintain
VESDA systems attend the VESDA accreditation training. Please contact your local Xtralis office
for more information.
1.1 Brief Outline
The information presented in this Maintenance Guide is arranged into the following chapters:
l Chapter 3 describes how to determine an appropriate maintenance schedule and maintenance procedures
for VESDA detectors.
l Chapter 4 describes how to maintain the power supply.
l Chapter 5 describes how to maintain the sampling pipe network.
l Chapter 6 provides information on post-maintenance testing.
l Chapter 7 provides information on annual testing.
l Appendix A provides a list of part numbers for spare and replacement parts.
l Appendix B provides application specific information on determining an appropriate maintenance
schedule.
l Appendix C provides a sample maintenance log, which should be completed as part of each maintenance
visit.
1.2 Maintenance Overview - Who and When?
To maintain the VESDA system at its peak performance level, the suggested maintenance schedule should
be followed. Maintenance can be conducted by the original installer, VESDA distributor or a service
contractor. Optimum operation of the VESDA system requires that the equipment is supported by a well-
designed and maintained sampling pipe network. Site conditions and local codes & standards may require
more regular maintenance than that recommended by Xtralis.
Maintenance frequency must be increased in industrial applications such as coal-fired power stations,
factories, distribution facilities and warehousing with high vehicular traffic loads since these applications
commonly have high levels of background pollution.
Notes:
l Xtralis have adopted the fire industry term 'Disable' for the VESDA VLF and all future products. The
VESDA VLP, VESDA VLS and VESDA VLC continue to use the term 'Isolate'. Both terms are used
throughout this document and have the same meaning.
l Xtralis have adopted the fire industry term 'Address' instead of the formerly used term ‘Zone’ for the
VESDA VLF and all future products. The VESDA VLP, VESDA VLS and VESDA VLC continue to use
the term 'Zone'. Both terms are used throughout this document and have the same meaning.
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