1.4.3 Low CO concentration warning
In daily life, low levels of carbon monoxide can often occur. For
example, cigarette smoking, burning candle and gas-burning
appliances can produce low concentrations of CO. Although it
may do no harm to normal people, prolonged exposure to low
levels of CO can impair the health of vulnerable groups such as
children, pregnant women, elderly or patients. This warning is to
help these people avoid prolonged exposure to low levels of CO.
It doesn’t mean a dangerous situation, so please don’t be panic.
When CO concentration is greater than 30PPM for a duration of
more than 60 minutes, or when CO concentration is greater
than 40PPM for a duration of more than 40 minutes, low CO
concentration warning will be made. The low CO concentration
warning which has been specified in Section 1.3.1 is distinctly
different from alarm warning:
difference
Low CO concentration
warning
Alarm warning
1
flashes
4 times with
beeps at a slower
speed.
The Alarm indicator
flashes 5 times with
beeps at a faster
speed.
2
warning
is given once
every 3 to 5 minutes.
Alarm warning is given
3 times every 10
seconds.
Low CO concentration warning won’t stop until CO
concentration is less than 25 PPM.
1.4.4 Testing
Test the CO alarm at least once a week by pressing the TEST
button, to make sure the sensor, buzzer and indicator lights are
operating properly.
Press the TEST button, and the Power, Fault and Alarm
indicators
will flash once at the same time. If the detector is
working properly, then one cycle of alarm will be made. If there
is malfunction, then fault warning will be made.
Wait at least 5 seconds if you want to perform the test operation
again.
When testing, the LCD display shows ”- - -”.
Please test the product at least once a week to ensure the
unit is working properly.
Important:
If you hear 4 slower beeps every 3 to 5 minutes instead of
continuous alarm sounds, it’s low CO concentration warning.
Don’t be panic. If you
continuous alarm sounds with short
intervals, it’s alarm warning. It is very dangerous, please
leave the scene immediately.
To Next Page