Outside the Detector
Installation Handbook, AutroSense Nano 116-P-ASENSENANO/DGB, 2010-08-09, Autronica Fire and Security AS
Page 4
2. Outside the Detector
1.
Front Cover Securing Screw: leave sufficient clearance
below the detector to allow screwdriver access to this
screw.
2.
Fire Alarm: illuminates to indicate that the smoke level
has passed the detector
’
s Fire 1 threshold, and the
normally open FIRE relay contacts have closed.
3.
Pre-Alarm: illuminates to indicate that the smoke level
has passed the detector
’
s Pre-Alarm threshold, and the
normally open PRE-ALARM relay contacts have closed.
4.
Fault: illuminates to indicate a fault condition and that
the normally closed FAULT relay contacts have opened.
Three additional LEDs indicate the type of fault:
a)
Flow: illuminates to indicate an airflow fault. This
may be due to blocked or broken pipes,
although it can also occur if, for example, factory
warehouse doors are opened on a windy day, or
if industrial air conditioning turns on. Another
possible cause is that the aspirating fan
connection cable is damaged or disconnected.
3
2
4
a
c
1
b
5
