Use; Preconditions For Use - Dräger Nitrox 200 Instructions For Use Manual

4

Use

4.1

Preconditions for use

WARNING
!
Risk of explosion and fire
Supply units and the pressure vessels being filled must
always be positioned correctly in a stable position. During
operation and after decommissioning, the supply units and
connections must be secured correctly.
NOTICE
i i
Observe the chapter "Troubleshooting" on page 33 if the
oxygen content in the oxygen supply is not 100 %.
The gas that is to be measured must flow through the analysis
connection.
1. Allow gas to flow through the analysis connection prior to the
installation of the connection hose. To do so, slowly open the shut-
off valve for the gas analysis (Fig.1, Pos.7).
Check with your finger whether you can feel gas flowing from the
opening of the analysis connection (Fig.1, Pos.8) and close the
shut-off valve for the gas analysis (Fig.1, Pos.7) again.
2. Slowly open the relief valve (Fig.1, Pos.9) and close it again as
soon as the digital gauge (Fig.1, Pos.2) signals a depressurized
state.
This does not replace the annual inspection, but must be carried
out in addition to it (see "Service intervals" on page 36).
Nitrox 200
Additional information about handling the Dräger X-am® 5000 in
conjunction with the Nitrox 200
The Dräger X-am® 5000 utilized in the Nitrox 200 is equipped with a
special oxygen sensor. Measuring results of this sensor are impacted
by the ambient pressure (partial pressure dependency).
This may result in a fluctuation of the measuring value for example,
depending at what height above or below sea level measurements are
taken. In order to avoid these deviations, the following steps must be
carried out immediately prior to the measuring:
1. Prior to the utilization, a visual inspection of the completeness of
the oxygen measuring device Dräger X-am® 5000 must be carried
out.
2. Switch on device.
3. Hold and press "OK" for approx. 3 seconds until the countdown on
the display "3...2...1" has finished. For a brief period, all display
segments, the visual, the acoustic, and the vibration alarm will be
activated.
The software version will be indicated. The device carries out a

self-test. After the self-test, the device switches to error mode. The
measuring value is hidden. Only 2 dashes will be indicated. The
acoustic and visual alarm each signal 3 times.
4. Acknowledge this alarm with "OK".
This error scenario is normal and results from the default
calibration interval of 1 day that has been set in the Nitrox 200 for
the application of the Dräger X-am® 5000.
After the device is switched on, the oxygen sensor requires a warm-up
time of at least 10 minutes if the batteries were inserted and not fully
discharged. After a battery replacement or the complete discharge of
the batteries, a warm-up time of 1 hour is required, which is indicated
by the device. During this time, it is not possible to use the device.
After the warm-up time, a fresh air calibration is required. This
approach is derived from the partial pressure dependency indicated
above and applies up to 1000 m above sea level (NN).
Use
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