12
Operation
Before using the instrument for the first time, insert a charged NiMH T4 power pack
or batteries approved by Dräger, see "Changing the batteries" on page 58.
The instrument is now ready for operation.
Switching on the instrument
Press and hold the key for approx. 3 seconds until the countdown »3.2.1«
shown in the display has elapsed.
— All the display segments, including the visual, audible and vibration alarms, are
activated for a short time.
— The software version is displayed.
— The instrument performs a self test.
— The next sensor which is next due for calibration is displayed with the days
remaining until the next calibration/adjustment, e.g., »ch
4
%LEL CAL 123 «.
— The time until the bump test interval elapses is displayed in days, e.g., »bt2«.
— All A1 and A2 alarm thresholds and if applicable »« (TWA)
1)
and »« (STEL)
1)
for all toxic gases (e. g. H
2
S or CO) are displayed consecutively.
— During the sensor warm-up phase:
— The display for the measured value flashes
— The special symbol »« is displayed.
— No alarms are issued during the warm-up phase.
— The red LEDs flash.
— The gas detector is ready to measure when the measured values no longer flash
and the red LEDs are no longer illuminated. The special symbol »« may continue
to be displayed if corresponding warnings (e.g. not yet ready for calibration) are
active (to view the warnings, see the technical manual).
Press the key to cancel the display of the activation sequence.
WARNING:
To reduce the risk of ignition of a flammable or explosive atmosphere, strictly adhere
to the following warning statements:
Only use power pack types ABT 01xx, HBT 00xx or HBT 01xx. See the marking on
the rechargeable battery for permitted rechargeable batteries and the corresponding
temperature class.
Substitution of components may impair intrinsic safety.
1) Only when activated in the instrument configuration. Delivery condition: not activated.
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