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The Peak Level Memory Button
When the Peak button is pressed the unit will display the highest CO
concentration measured since the peak memory was last reset or the
unit was powered. Levels between 11 and 999-ppm will be display
although the unit does not display values below 30-ppm during normal
operation. Although the peak level will display values below 30ppm the
unit will never result in an alarm no matter how long the device is
exposed to these levels. Peak Levels below 30ppm are for reference
only and the accuracy of the concentration shown may not be as accu-
rate as noted in the technical information section. DO NOT ignore read-
ings above 30ppm or an alarming device. Refer to the following section
“What to Do When The Alarm Sounds”.
To Reset the Peak Level Memory…
Step 1. Press the peak level button.
Step 2. With the peak level button still pressed, press the test/reset but-
ton for two seconds and release.
The number on the display will turn to “0”. The memory has now been
cleared and the alarm will begin monitoring for CO within a few min-
utes.
The Effects of CO Exposure
When you breathe carbon monoxide, it enters your bloodstream
through your lungs and attaches to red blood cells. These red blood
cells, called haemoglobin, carry oxygen throughout your body. CO mol-
ecules attach to the red blood cells 200 times faster than oxygen, pre-
venting the flow of oxygen to your heart, brain and vital organs. As CO
accumulates in your bloodstream, your body becomes starved for oxy-
gen. The amount of CO in a person’s body can be measured by a sim-
ple blood test, called a “carboxyhaemoglobin level” test .
The early symptoms of CO poisoning are often mistaken for the flu –
headache, dizziness, weakness, nausea, vomiting, sleepiness, and
confusion. Breathing very high concentrations of CO can be lethal in
minutes.
Your Family at Risk for CO Poisoning
Carbon monoxide is the number one cause of poisoning deaths. While
anyone is susceptible, experts agree that unborn babies, small chil-
dren, senior citizens and people with heart or respiratory problems are
especially vulnerable to CO and are at the greatest risk for death or
serious injury.
Normal Operation
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