5
Pre-Alarm:
When the alarm detects over 50ppm
CO the red light flashes every 2 seconds. This
helps locate CO leaks as the unit gives an indication
straight away (without this feature the CO level
would need to be at 50ppm CO for 90 minutes
for the horn to sound). Note the Pre-Alarm signal
may be triggered by CO coming for example, from
cooking with gas, from car engines or from nearby
barbecues. This is usually not a concern unless the
Pre-Alarm signal persists until the alarm sounds and
the CO source is unknown.
Note
: The CO Alarm may sound if cigarette smoke is
blown into it, or aerosols are released nearby.
2.4 CO ALARM MEMORY
When in standby the CO Alarm will flash accordingly
to indicate if there has been a CO event. The flash
rate indicates the level of CO detected as below:-
-
Red light is Off
– No CO detected since reset or
power up.
-
Red light flashes 2 times
(in 2 seconds) every 40
seconds - 50 ppm CO detected for approximately
90 minutes since reset or power-up.
-
Red light flashes 4 times
(in 2 seconds) every 40
seconds - 100 ppm CO detected for approximately
40 minutes since reset or power-up.
-
Red light flashes 8 times
(in 2 seconds) every 40
seconds - 300 ppm CO detected for approximately
3 minutes.
In addition, when the Test button is pressed the horn
will sound, and the red light will only flash if the unit
has previously detected CO and been in alarm. The
digital display on the Ei261DENRC model will also
show the previous peak reading. This tells you if the
unit has detected CO in your absence and helps to
detect and locate leaks, monitor premises etc.
Reset Memory
by holding down the Test button for
over 20 seconds until the red light stops flashing.
Cover the horn with a cloth to muffle the alarm during
this time.
Please note that the memory will also be reset when
the unit is removed from the mounting plate.
