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6
Maintenance
Have instrument calibrated once a year as the measurement uncertainty
increases over time due to drift effects. Only have calibration and maintenance
carried out by authorised persons, e.g. DrägerService.
6.1
Changing battery
1.
Switch off instrument.
2.
Push the battery cover off.
3.
Replace the battery (battery type: 3 V CR123A; order no.: 83 21 390).
Ensure that the polarity is correct when doing so.
4.
Push the battery cover back on.
5.
Check whether the time has been set correctly.
If changing the battery takes more than 5 minutes, then the time needs to
be reset. It is only possible to make a measurement with the time set.
6.2
Cleaning
The instrument should be cleaned with a cleaning agent based on ethanol.
Cleaning the instrument:
1.
Wipe the instrument using a disposable cloth and the cleaning agent.
Do not apply the cleaning agent directly onto the instrument.
Make sure that no liquid enters the gas inlet.
2.
After cleaning, leave the instrument unpacked at room temperature
(20-25 °C) for at least 24 hours.
3.
Then use a breath alcohol test without alcohol to ensure that there is no
residual ethanol inside the instrument and that the result "0.00" is displayed.
Maintenance
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