Normal Operating Mode; Model; Performing Self-Test; Viewing Peak Levels - 3M 110 Series User Instructions

Normal Operating Mode

CO and H S Models
2
The LCD will display "CO" or "HS" until the unit is exposed to detected gas levels at or above 0 ppm for CO
models or 0 ppm for H S models (Fig.  and 4). The gas readings will change in increments at or above 5

ppm as the CO or H S gas levels change.

Fig. 
Fig. 4
O

Model

2
The LCD should display 0.9% once activated in an environment containing normal oxygen levels. It will
change in increments of 0.5% above or below .0% if oxygen levels change (e.g. 0.5%, .5% etc.).

Performing Self-test

Each time a self-test is performed, it activates the audible, vibratory and visual alarms. If the self-test fails,
or all the alarms do not activate, do not use. Failure to do so may adversely affect product performance and
result in sickness or death.
A self-test can be performed at any time by pressing the On/Menu button once from the normal operating
mode. This will test the battery, electronic circuitry and alarm functions to insure they are working properly.
The self-test does not test the performance of the sensor. This must be done through a calibration (O
or calibration verification test (CO and H S models). See Calibration Verification Test and Calibration section of

these User Instructions.
The self-test will be indicated by the "test" icon being displayed on the LCD for about 5 seconds and the
buzzer, LED and vibrator will activate (Fig. 5). After successful completion of a self-test, the "check" icon (Fig.
6) will appear on the display for 4 hours and the unit will return to normal operating mode.
If a self-test fails, the LCD will display "Err" (Fig. 7). Press button to clear. Do not use the instrument until
the reason for the "Err" message has been determined and corrected.
Fig. 5 Fig. 6

Viewing Peak Levels

From normal mode, press the button twice and the peak reading will be displayed.
To clear the peak reading, wait 5 seconds; "Clr" will be displayed. Press the
button once to clear and the value will be set to zero so long as the unit is in a
non-contaminated environment (Fig. 8). The instrument will go back to normal
operating mode after 5 seconds.

Time Remaining Indicator

To display time remaining until the monitor becomes deactivated, press the
button three times from normal mode (or once from peak mode). The time will be
displayed in months (Fig. 9). When less than  months of life remains, the time
will display in days. The instrument will go back to normal operating mode after
5 seconds.
WARNING
Fig. 7
8

End of Life Indicator

The LCD will display "EOL" at the end of the instruments two-year life (Fig. 0).
Press button to clear. Discard monitor according to local regulations.

Alarms

Immediately exit any environment that causes an alarm condition on the monitor. Failure to do so
may result in sickness or death.
Do not cover or obstruct display, audible alarm opening or visual alarm cover. Doing so may adversely affect
product performance and result in sickness or death.
Vibrator and LCD may not function effectively below –4 °F (–0 °C). Using the instrument below this
temperature may adversely affect product performance and result in sickness or death.

Viewing Alarm Set Points

To display alarm set-points, press the button 4 times from the normal operating mode (Fig. ). The low alarm
will be displayed followed by the high alarm.

Low Alarm

A low alarm is activated once the low alarm set-point has been reached or exceeded. A low alarm is indicated by a
slow alarm sequence of buzzer, red LED, "LOW ALARM" display and vibrator actuated every .5 seconds (Fig. ).

High Alarm

A high alarm is activated once the high alarm set-point has been reached or exceeded. A high alarm is
indicated by a fast alarm sequence of buzzer, red LED, "HIGH ALARM" display and vibrator actuated every
model)
.5 seconds (Fig. ).


Over Range Alarm

An over range alarm is indicated by a flashing display showing the highest value in the range of the sensor:
995 ppm for CO, 00 ppm for H
the high alarm.

Low Battery Alarm

If battery capacity reaches a point where it is no longer sufficient to maintain operation of the unit, the LCD will
display "bAt" (Fig. 5). Press button to acknowledge and silence the alarm. Discard and replace the unit.
Fig. 
Fig. 8
Fig. 4
Fig. 9
WARNING
S, or 5.0% for O (Fig. 4). The alarm indicators are the same as those for
 
Fig. 
Fig. 
Fig. 5
9
Fig. 0