©
AirSense Technology Ltd. 2005
Page 9
Stratos-Micra 100
• INSTALLER’S HANDBOOK • Iss. 3
The following table gives suggested settings of ClassiFire alarm setting for different locations
0
Extremely High
Once per year
Semiconductor manufacturing clean room
1
Once per 5 years
Computer room
2
Once per 10 years
Non-smoking office
3
Once per 50 years
Clean factory
4
Medium
Once per 1000 years
Warehouse
5
Medium
Once per 5,000 years
Warehouse with diesel trucks operating
6
Medium
Once per 10,000 years
Warehouse with diesel trucks operating
7
Low
Once per 20,000 years
Warehouse with diesel trucks operating
8
Low
Once per 100,000 years
Warehouse with diesel trucks operating
Alarm
Factor
Sensitivity
Probability of
Nuisance Alarm
Suggested Protected Area
3.6
LDD Enable -
Alarm levels and delays
tab
When this function is ticked, Laser Dust Discrimination (LDD™) increases the response
time of the detector slightly, whilst greatly reducing the likelihood of nuisance alarms
due to dust ingress. LDD may be disabled in
very clean rooms
for a slightly faster
response to smoke by setting this function to unticking the box. This function is
enabled by default.
NB: Disabling LDD is not recommended for areas other than man-
ufacturing clean rooms, due to the increased probability of nuisance alarms in most
other operating environments.
3.7
FastLearn enable -
Alarm levels and delays
tab
If the detector is in FastLearn mode, unticking this box will stop the FastLearn process.
Using the function in this way is neither recommended nor supported by AirSense
Technology Ltd.
Ticking the box will start a FastLearn at any time. The green “OK” LED on the front of
the detector will flash for the fifteen minutes that it takes for the FastLearn process, and
will then change to constant illumination to indicate that the FastLearn is complete.
Note:
It will take a further 24 hours after the FastLearn for full sensitivity to be reached,
unless Demonstration Mode has been initiated
(See section 3.10, “Demo mode”).
It is
essential for proper functioning that the detector not be left in Demonstration mode, and
that it be allowed to complete the 24-hour learning period. To cancel demo mode, tick this
box or power down and restart the detector to initiate FastLearn mode.
3.8
Auto FastLearn enable -
Alarm levels and delays
tab
When enabled, this function ensures that if the detector is powered off for any reason
(e.g. for maintenance or to be moved to a new area), a FastLearn is commenced auto-
matically on power-up. There may be occasions when it is desirable to power down the
detector for short periods of time, and it is highly likely that ambient contaminant lev-
els will be the same on power-up. Under these circumstances it may not be desirable
that the detector should to go through the whole learning process again. To this end,
this function can be unticked before power-down, whereupon it will return to the orig-
inal settings on power-up. This function is enabled by default.
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