Dräger X-AM 2500, Instructions For Use Manual

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30 Dräger X-am 2500
Maintenance
Notice for the adjustment of the ex-channel to nonane as a
measuring gas:

During the adjustment of the ex-channel, propane can be used as
a substitute test gas.

When using propane to adjust the ex-channel to nonane, the display
must be set to twice the used test gas concentration.
Notice for the use in subsurface mining:

For the adjustment of the ex-channel to the measuring gas
methane, the display of the instrument must be set to a value of
5 % (relative) higher than the test gas concentration.
Automatic fresh air calibration in the charging cradle (CatEx
sensor only):
Calibrate the gas detector to fresh air, free of measured gases or other
interfering gases. If the function is selected, a fresh air calibration of
the CatEx sensor is performed automatically as soon as the gas
detector is inserted in the charging cradle.
This function can be selected or disabled using the CC-Vision PC
software.
No calibration takes place if the warm-up is not yet complete:

Alarm LED is illuminated red.

The acoustic signal sounds twice followed by three short tones
and the gas detector switches off.
Once the fresh air calibration has been successfully completed:

Alarm LED is illuminated red.

The acoustic signal sounds once followed by three short tones and
the gas detector switches off.
If a fault has occurred during the fresh air calibration:

The fault message appears and is displayed for the
respective sensor instead of the measured value.

In this case, repeat the fresh air calibration.
If necessary, have the sensor replaced by qualified personnel.
5 Maintenance
5.1 Maintenance table
The instrument should be inspected and serviced once a year by
suitably qualified persons. Comparisons:

EN 60079-29-2 – Gas detectors - Selection, installation, use and
maintenance of detectors for flammable gases and oxygen

EN 45544-4 – Electrical apparatus used for the direct detection and
direct concentration measurement of toxic gases and vapours -
Part 4: Guide for selection, installation, use and maintenance

National regulations
Recommended calibration interval for measuring channels Ex, O
2
,
H
2
S, SO
2
, NO
2
and CO: 6 months. Calibration intervals of other gases:
see Instructions for Use of the respective DrägerSensors.
See the Technical Manual for details of spare parts.
Test gas properties (such as relative humidity, concentration, etc.) can
be found on the corresponding data sheet of the sensor. The relative
humidity is not relevant for the O2 sensor. Always use dry test gas.