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Operation
Peak Level Memory
The peak level feature is helpful in identifying CO occurrences below 30 PPM.
Although the unit will not automatically display levels below 30 PPM, it will
detect and store these readings in memory. By pressing the peak level but-
ton, concentration levels as low as 11 and up to 999 PPM will be displayed.
Concentrations of CO between 0 and 30 PPM can often occur in normal,
everyday conditions. Concentrations of CO below 30 PPM may be an indi-
cation of a transient condition that may appear today and never reappear.
Just a few examples of conditions and/or sources that may cause readings
are heavy automobile traffic, a starting a vehicle in an attached garage, an
appliance that emits CO when starting up, a fire in a fireplace or charcoal in
a nearby barbecue. A temperature inversion can trap CO generated by traf-
fic and other fuel burning appliances causing readings of CO.
Normally, the digital display will read “0” and under certain conditions you may
notice levels of 30 or more for short periods of time, by using the Peak level
memory feature on the Carrier CO alarm you can view concentrations of CO
between 11 and 30 PPM. Use the concentrations shown in memory as a tool
in identifying the source of the CO. It may be helpful to purchase additional
Carrier CO Alarms to place in different locations throughout your house to iso-
late the CO source. Monitor the CO concentrations shown in the peak level
memory to see if readings occur in certain areas at certain times of the day,
or near a particular appliance.
Once the source is located, correcting the problem may be as easy as open-
ing a window, venting an appliance, backing a running car out of the garage
a safe distance from living quarters and closing the garage door. It could be
possible that a weather condition caused the reading and the condition may
or may not happen again.
Some CO conditions may start out as low level leaks but could develop into
CO concentrations that could become harmful. If this happens, the CO alarm
will detect the dangerous level and alarm, notifying you and others of the con-
ditions. DO NOT ignore high concentration readings above 30 PPM or a CO
alarming device that is in alarm.
CO concentrations displayed below 30 PPM in "Peak Level" memory are for
reference only and the accuracy of the concentration shown may not be as
accurate as noted on page 24.
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 minutes.