Cleaning The Detector; Replacing The Dust Separator Cartridge - Edwards LaserSense Nano Installation Handbook

Chapter 5: Maintenance
If the self-monitoring feature of the system senses that the operation of the
detector head is outside its normal range, a trouble condition will be generated.

Cleaning the detector

The exterior of the detector should be cleaned as necessary. Clean the detector
with a damp (not wet) cloth.
Do not use solvents to clean the detector. Use of solvents may cause
Caution:
damage to the detector.

Replacing the dust separator cartridge

The only part that may require field replacement during servicing is the dust
separator (filter) cartridge. Its condition can be checked using the Dust Separator
test in the Diagnostics menu of the Remote Control software or SenseNET
software, which gives a percentage reading of dust separator (filter) efficiency.
When this level drops to 80%, the detector will signal a Separator Renew fault
indicating that the dust separator cartridge needs to be replaced.
For more information, refer to either the Remote Control Software User Guide or
SenseNET Software User Guide.
It is recommended that dust separators be changed at an interval of not more
than 3 years. After replacing the filter, the detector must be put into FastLearn
mode to reset the filter condition reading.
As dust contained in the dust separators may expose maintenance personnel to
a "nuisance dust" hazard as defined by the Control of Substances Hazardous to
Health (COSHH), it is strongly recommended that suitable masks and protective
clothing be worn when changing filters.
Used dust separator cartridges are not intended for reuse and should be
Note:
discarded.
To replace the cartridge:
1. Remove power to the detector.
2. Remove the front cover mounting screw securing the unit's front cover.
3. With the front cover removed, grasp the filter firmly and pull the filter out
(directly towards you).
4. Properly dispose of the used cartridge.
5. Locate the orientation markings on the new filter cartridge. The word "IN" is
marked on one side and the other is marked "OUT".
6. Insert the replacement filter cartridge so that the "IN" mark on the cartridge is
on the left as viewed in Figure 13 on page 41.
7. Slide the cartridge all the way into place.
40 LaserSense Nano Aspirating Smoke Detector Installers Handbook