Maintenance Table - Dräger X-am 2500 Notice D'utilisation

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.
32
If a fault has occurred during the fresh air calibration:
The fault message appears and

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
H S, SO , NO and CO: 6 months. Calibration intervals of other gases:
2 2 2
see Instructions for Use of the respective DrägerSensors.
See the Technical Manual for details of spare parts.
is displayed for the
,
2
Dräger X-am 2500