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Operation in alarm condition
Upon switching on the detector for the first time or when the device is
switched on after a long period (more than 2 weeks) without power, the
sensor takes 7 to 10 days to acquire its steady physical-chemical cha-
racteristics and thus a constant level of sensitivity. It is therefore strongly
recommended to make sure that this “period of conditioning” has pas-
sed before carrying out any checks on the activation level.
On connecting the detector, the green led will flash for 2 minutes approx.
(known as “reactivation period”): during this time the detector cannot
test the quantity of gas present in the environment.
When the concentration of gas in the air exceeds the threshold, the
detector starts working by switching on the red led. After 5 seconds from
the led red switch-on, the built-in intermittent sound alarm starts.
If, during this time, the concentration of gas falls below the detection
threshold, the gas detector alarm switches off and the delay is comple-
tely reset. The sound alarm remains on for all the duration of the alarm.
Afterwards, after 20 seconds from the activation of the sound alarm, the
alarm relay is activated too. The alarm relay contacts can also control
solenoid valves (NO or NC) or visual-sound alarms.
INSTALLATION
For the instructions of the following:
• Mounting
• Overall dimensions
• Where installing the device
• Positioning
• Areas to be avoided
Refer to the instructions, pages 21, 22 and 23 of the manual of model
RG1-M.
LED
On
Off
Flashing
detector supplied
detector not
detector under
GREEN
with power
power supplied
reactivated
sensor or
detector in full
YELLOW
detector failure
working order
detector in alarm
RED
condition due to
detector alarm
the exceeding of
off
the threshold
C.443BIS 18-12-2003 12:55 Pagina 29
