Chapter 5: Maintenance
38 LaserSense Nano Aspirating Smoke Detector Installers Handbook
Introduction
This chapter contains maintenance instructions for the detector system. These
procedures should be performed on a scheduled basis. In the event that system
problems are found during routine maintenance, refer to Chapter 4
“Troubleshooting” on page 33. Failure to properly maintain the system may affect
the functioning of the system.
Scheduled maintenance
The scheduled maintenance of the system should be performed at an
established interval. The interval between performance of maintenance
procedures should not exceed any imposed regulations. (See NFPA 72 or other
local requirements.)
Local standards and specification requirements must be adhered to. A typical
maintenance plan is listed in Table 6 below.
Notes
It is prudent to disconnect or isolate the detector from the fire panel during
maintenance to prevent unintentional alarm activations.
The detector should be powered down during internal cleaning (use an air duster
can or dry air gun).
Table 6: Maintenance plan
Step Procedure
1 Check detector, wiring and pipework for damage
2 Check original design is still valid, e.g. changes due to building upgrades
3 Check detector for contamination and clean if necessary
4 Check maintenance logs for issues and rectify as appropriate
5 Check transport times against original records: significant increases or decreases in
transport times may imply damaged pipes or sampling holes that need clearing
6 Isolate detector from fire panel if required
7 Smoke test to check detector operation and Alarm relay connection
8 Simulate a fault to check the Fault relay and connection
9 Complete and file maintenance records
10 Reconnect detector to fire panel if required
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