Alarms; Viewing Alarm Set Points; Low Alarm; High Alarm - 3M 110XL Serie Directives D'utilisation

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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 – ˚F (–20 ˚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 times from the normal operating mode (Fig. 9). The low alarm

will be displayed. Press the button again to display the high alarm, TWA alarm and STEL alarm, respectively.

Low Alarm

A low alarm is indicated by a slow alarm sequence of buzzer, red LED, "LOW ALARM" display and vibrator

actuated every 2. seconds (Fig. 0).

High Alarm

A high alarm is indicated by a fast alarm sequence of buzzer, red LED, "HIGH ALARM" display and vibrator

actuated every .2 seconds (Fig. ).

Fig. 9

Fig. 0

TWA and STEL Alarm

When a TWA or STEL alarm point is reached, the alarm is actuated. The "tA" is displayed in the digital display

area alternating every second with the gas level when the TWA alarm is actuated. The "StL" is displayed in the

digital display area alternating every second with the gas level when the STEL alarm is actuated.

To clear TWA, from the normal operating mode, press the button 6 times (Fig. 2). The display will toggle

between "tA" and the TWA alarm level setting. Wait seconds until the display shows "Clr," then press the

button once (Fig. ).

To clear STEL, from the normal operating mode, press the button 7 times (Fig. ). The display will toggle

between "StL" and the STEL alarm level setting. Wait seconds until the display shows "Clr," then press the

button once (Fig. ).

Fig. 2

Fig.

Over Range Alarm

An over range alarm is indicated by a flashing display showing the highest value

in the range of the sensor: 99 ppm for CO (Fig. ) and 200 ppm for H

alarm indicators are the same as those for the normal 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. 6). Press button to

acknowledge and silence the alarm. Do not use until battery is replaced by a M

Service Center.

WARNING

Fig.

S. The

Alarm Mode Table

Alarm Mode

Display

Low

Gas Concentration and

"LOW ALARM"

High

Gas Concentration and

"HIGH ALARM"

TWA

Gas Concentration alternates

with "tA"

STEL

Gas Concentration alternates

with "StL"

Over Range

"HIGH ALARM" and flashing of

highest value in the range of sensor

(99 ppm CO, 200 ppm H

Error

Err

Fail

FAil

Low Battery

bAt

Calibration Verification Test and Calibration

The following steps must be performed when conducting a calibration or calibration verification test

(Bump test) to ensure proper performance of the monitor. Failure to do so may adversely affect product

performance and result in sickness or death.

– Calibrate prior to initial use.

– When performing a calibration or calibration verification test (Bump test) only use certified calibration

gas at the required concentration level. Do not calibrate with expired calibration gas.

– A calibration verification test (Bump test) should be performed before each use.

– If the instrument cannot be calibrated, do not use until the reason can be determined and corrected.

– Do not cover or obstruct display, audible alarm opening or visual alarm cover.

– Ensure sensor inlet is unobstructed and is free of debris.

Fig.

– Ensure calibration hood is removed prior to use.

Fig. 6

Alarm Sequence

Repeating Alarm Cycle:

Three 2. sec. alarm sequences (vibrate, double

beep/double flash) followed by five 2. sec. alarm