3.3 Alarm
If the hazard
threshold is exceeded (alarm) the red
1
LED
stays on and the buzzer lets off a continuous
noise. At this point the detector sends a command to
close the solenoid valve.
The command is made by switching the the output
relay contact (terminals NO - C - NC).
Once the alarm is over the device returns to normal
operating conditions.
When the red LED
the buzzer is disabled and the contact on the terminal
NO - C - NC is switched.
It is then necessary to reset the solenoid valve manu-
ally.
1. see "Technical characteristics - threshold setting"
turns off (end of state of alarm),
4. Irregularities
4.1 General failure
If there is an internal failure in the device, the green
LED
shifts from flashing mode to constant mode,
while the yellow LED
is necessary to contact an installer.
For the user
starts flashing. In this case it
ENGLISH - 13