SAFETY AND SECURITY
44
Note: We suggest the use of an incense
stick or cigarette as the way in which
these products burn produces a readable
localized amount of CO. A readable level
of carbon monoxide will not be given off
by other sources of smoke, for example an
extinguished candle or match.
Step 1: If the alarm is wall mounted unhook it
from the fixing screws.
Step 2: Hold the Test/Mode button down
until the spanner icon appears in the bottom
left hand corner of the screen and the bar
graph ‘scans’ from left to right. This indicates
the alarm is in sensor test mode where the
sampling rate of the sensor has increased and
the alarm can be tested using a known source
of CO.
Step 3: Light an incense stick or cigarette
using a match or lighter. Extinguish the
lighter, or put out the match and place it into
a dish of water.
Step 4: Hold the incense stick or burning
cigarette 15cm (6 inches) below the
detector, so that the smoke goes into the
holes at the bottom of the detector. As the
smoke gets into the alarm the display will
show the amount of CO being detected.
When the level of CO in the sensor reaches
50ppm the alarm will sound a single alarm
cycle, this confirms that the sensor is working
correctly and is the end of the sensor test.
The alarm will return to normal standby
mode.
Step 5: Put out the incense stick or cigarette
by placing it into a dish of water. Ensure that
all flames have been extinguished.
Note: If the level of CO in the sensor doesn’t
reach 50ppm then the Sensor Test mode
will time out and finish automatically after
3 minutes. Even if the level doesn’t reach
50ppm, as long as the display shows a
reading of CO then you can be confident
that the alarm is working correctly. If you
have any questions about testing the sensor
please contact the technical support team
Understanding the Product's
Indicators
Digital Display
The LCD screen has many icons with one or
more being shown at any one time.
Bar Graph to show early build up of CO.
To understand the role of the product
indicators please refer to section ‘Carbon
Monoxide and how it can affect your family’
on page 3 of the CO-9D User Manual. The
alarm has a bar graph which mimics the way
CO levels build up in the blood stream. The
response times of the alarm are determined by
the European Standard BS EN 50291:2001 so
the alarm will only sound when it has detected
CO for a prescribed length of time, the higher
the level of CO the quicker the alarm must
sound. However with FireAngel’s CO-9D
there is an early visual warning that CO is
present. When CO is first detected the alarm
indicates it’s presence by displaying the level
on the screen in parts per million (ppm). If CO
continues to be present additional bars will
appear on the graph. When the graph is full
CO ALARM
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