Dräger X-am 1100 Notice D'utilisation page 8

Press and hold the [ + ] key for approx. 3 seconds until
the countdown » 3 . 2 . 1 « shown in the display has
elapsed.
– The remaining operating time (not in the case of Drä-
ger X-am 2000) is displayed, for example » d 730 «
(remaining operating time 730 days).
– After that, the device is automatically switched off
again. You can switch it on again at any time by pres-
sing the [OK] key.
Operation
Switching on the device
Press and hold the [OK] key for approx. 3 seconds un-
til the countdown » 3 . 2 . 1 « shown in the display has
expired.
– All the display segments, including the visual, audible
and vibration alarms, are activated for a short time.
– The software version is displayed.
– The device performs a self-test.
– The remaining operating time is displayed, e.g.
» d 730 « (remaining operating time 730 days). This
applies to Dräger X-am 1100/1700 and if the service
life is activated in Dräger X-am 2000.
– All alarm setpoints A1 and A2 as well as »
1)
and » « (STEL) for H S and CO are displayed in
2
succession.
– The time until the calibration interval expires is display-
ed in days, e.g. » CAL 73 «.
– During the running-in period of the sensors, the re-
spective display of the measured value flashes and the
special symbol » « (for warning) is displayed. No
alarms are issued during the running-in period of the
sensors.
Press the [OK] key to cancel the display of the activa-
tion sequence.
Switching off the device
Press and hold the [OK] key and the [ + ] key simulta-
neously until the countdown » 3 . 2 . 1 « shown in the
display has elapsed.
– Before the device is switched off, the visual, audible
and vibration alarms are activated for a short time.
Before entering the workplace
ATTENTION:
Check and, if necessary, adjust the calibration
before carrying out safety-relevant measure-
ments. A bump test must be performed according
to the national regulations.
____________
1) Only when activated in the device configuration. Delivery status: not
activated.
8
Switch on the device, the current measured values are
shown in the display.
– Observe any warning »
The instrument can still be used in a normal
manner. The icon shall disappear during the
work shift. If this is not the case, maintance is
required.
The instrument is not ready for use. Mainta-
nance is required.
Check that the gas inlet opening on the device is not
covered.
ATTENTION:
The presence of catalyst poisons in the measured
gas (e.g. volatile silicone, sulphur, heavy metal
compounds or halogenated hydrocarbons) can
damage the CAT Ex sensor. If the CAT Ex sensor
cannot be calibrated to the target concentration
anymore, the sensor must be replaced.
The Cat Ex sensor may show incorrect results in
an oxygen-poor atmosphere.
Electrical operating safety (explosion protection)
is not guaranteed in an oxygen enriched
atmosphere.
1)
« (TWA)
During operation
– The measured values for every measured gas are dis-
played during operation.
– If a measuring range is exceeded or a negative drift
occurs, the following displays are shown instead of the
measured value display:
» « (concentration too high) or »
ve drift).
– If the concentrations of combustible materials are too
high, this may result in a lack of oxygen.
– If the O concentrations are under 10 vol. %, a fault
2
with » « is displayed for the Ex channel instead of
the measured value.
– In the event of an alarm, the corresponding displays,
the visual, audible and vibration alarms are activated –
see Chapter "Identifying Alarms".
After a measuring range has been exceeded, sensitivity
to Ex gases may be increased temporarily. This sensor
effect lasts for a maximum of 4 hours. Recalibration is
not allowed during this time.
After the measuring range of the TOX measuring chan-
nels has been exceeded temporarily (up to one hour),
checking the measuring channels is not necessary.
If using a CAT Ex sensor in Dräger X-am 2000, a fresh-air
calibration may be required if the zero point has changed
« or fault messages » «. by more than 3 %LEL after an extreme impact load.
Identifying Alarms
An alarm is displayed visually, audibly and through vibra-
tion in a specific pattern.
Concentration pre-alarm A1
The alarm is indicated by an inter-
mittent alarm message:
Display » A1 « and measured value
alternating: not for O
The pre-alarm A1 is not self-latching and disappears
when the concentration has dropped below the alarm
setpoint A1.
In the case of A1 a single tone is audible and the alarm
LED flashes.
In the case of A2 a double tone is audible and the alarm
LED flashes twice.
Acknowledging a pre-alarm:
Press the [OK] key, only the audible alarm and the vi-
bration alarm are switched off.
Concentration main alarm A2
The alarm is indicated by an inter-
mittent alarm message:
Display » A2 « and measured value alternating.
For O
« (negati-
ATTENTION:
Leave the area immediately. You are in mortal
danger! A main alarm is self-latching and cannot
be acknowledged or cancelled.
After leaving the area, if the concentration is less than the
alarm setpoint A2.
Press the [OK] key, the alarm messages are switched
off.
STEL / TWA exposure alarm
The alarm is indicated by an inter-
mittent alarm message:
Display » A2 « and »
measured value alternating:
!
2
: A1 = oxygen deficiency
2
A2 = oxygen excess
« (STEL) or » « (TWA) and