PI - 34.85
Product Information Linear Smoke Detector Fireray 50/100RV
601-F.01U.002.705
A1.en / 29.12.2004
ST-FIR/ PRM1/ zab
Seite 21 von 22
11.2. Fault diagnosis
Fault indicator
Possible cause
Action
Beam path blocked by an obstacle
Check and/or ensure free visual line
in the area between the detector and
the reflector.
Reflector is contaminated/covered/
has fallen down.
Check the status of the reflector and
clean it if necessary.
Fault LED
illuminated
Supply voltage too low.
Measure supply voltage directly at de-
tector.
illuminated
permanently
Mode sliding switch in upper position
(
«
Direct
»
)
Set the switch to
«
Operation
»
and
wait until the 60 s activation routine is
complete.
Detector set - up changed on switch-
ing to
«
Operation
»
.
When operating the sliding switch
following the correct adjustment,
make sure that the setting is not
changed.
The limit of automatic gain control has
been reached
Clean detector lens and reflector and
correct mechanical adjustment!
Fault LED flashes
«
MODE Switch
»
sliding switch in up-
per position (
«
Direct
»
) and incom-
plete detector set - up
Align detector vertically and horizon-
tally until the fault LED is permanently
illuminated. Then continue using fine
adjustment (switch in center position)!
Alarm LED
illuminated
DIP switch 1 at OFF
(
«
Save alarm
»
),
the alarm display remains saved
Reset the detector by disrupting the
supply voltage for at least 5 s or
select
«
Reset
»
on the fire panel
illuminated
permanently
Beam path (partially) blocked by an
obstacle
Ensure a free visual line in the area
between the detector and the reflec-
tor!
No fault message
when IR beam is
disrupted
Detector receives partial IR signal,
e.g. via reflective surfaces near the
beam axis.
Cover reflector with a dark material to
test! Check detector’s range of vision
for reflective objects!
Alarm triggered
when IR beam is
disrupted
An object placed in the beam path for
testing has acted as the reflector.
For testing, use a non - reflective
material, maintain a greater distance
to the detector, cover the reflector as
directly as possible.
Triggering of false
alarms
Sensitivity to existing environmental
conditions set too high
Set a less sensitive alarm threshold
(DIP switches 3 and 4):
normal= 35%, less sensitive= 50%
