Carrying Out A Fresh Air Calibration; Charging The Battery - Dräger X-am 3500 Notice D'utilisation

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en Maintenance
NOTICE
Damage to the sensors!
When using the exhaust gas hose, the sensors may be
damaged in the case of direct suction on the exhaust
gas hose.
► If necessary, lead the exhaust gas hose (max. length
2 m) to an exhaust of outside.
Adjustment may not be possible due to instrument and
channel errors.

5.4.1 Carrying out a fresh air calibration

To improve accuracy, a fresh air calibration must be
carried out if there is a zero deviation.
Observe the following notices for the calibration:
● For calibrating the XXS O
display is to 20.9 vol. %.
● There may be deviations of >10 % of the measured
value for temperatures below –20 °C if the
respective sensor is calibrated at room temperature.
Dräger recommends calibrating the sensor at the
planned operating temperature if the measurement
is to be carried out at very low temperatures. This
allows reducing a possible deviation.
Requirements:
– Fresh air calibration can only be carried out if at
least once sensor supports the fresh air calibration.
– The fresh air must be free of measurement or
interfering gasses.
– The gas detector is switched on and warm-up
phases 1 and 2 are complete.
To carry out a fresh air calibration:
1. Switch on the gas detector.
2. Open the fresh air calibration (depending on the
configuration):
If the fresh air calibration was released for user level
0 by the Dräger CC-Vision PC software:
● Select > Maintenance > Fresh air cal..
If the fresh air calibration was not released for user
level 0 by the Dräger CC-Vision PC software:
a. > Login
b. Enter and confirm the password.
c. Select Maintenance > Fresh air cal..
36
with fresh air, set the
2
3. Select to start the fresh air calibration.
 All measuring channels which are included in the
fresh air calibration flash, and all others are
greyed out.
The result is displayed as follows for every
measuring channel:
fresh air calibration successful.
fresh air calibration failed.
4. If necessary, press
control. In this case, a calibration happens
immediately.
 The new measured value is displayed for
confirmation.
The result is displayed as follows:
fresh air calibration successful.
fresh air calibration failed.
5. The fresh air calibration is complete when all
measuring channels included in the calibration
successfully passed or failed the calibration.
► Select and then confirm the dialog to discard
the result.
► Select to confirm the result.
If there was an error during the fresh air calibration:
– Repeat the fresh air calibration.
– If necessary, replace the sensor.
For more details, refer to the technical manual.

5.5 Charging the battery

WARNING
Risk of explosion!
To reduce the risk of ignition of a flammable or
explosive atmosphere, observe the following:
► Do not open the gas detector in explosion-hazard
areas.
► Only use the LBT 02** (lithium-ion) battery type.
► Do not charge or exchange the battery in explosion-
hazard areas.
► Only use the battery charger specified by Dräger.
The use of a different charger nullifies the explosion
protection certification of the gas detector.
The battery is a part of the lower part of the casing. The
battery can be charged with or without the gas detector.
1. Place the gas detector or only the lower part of the
casing with the battery in the charging cradle.
 The gas detector switches off automatically. The
green LED on the power pack flashes.
Instructions for use
to overrule the stability
| X-am® 3500