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6
Maintenance
The instrument is delivered with default calibration. The date of the last
calibration can be checked in the menu.
Dräger recommend calibrating the instrument once a year. Only have calibration
carried out by authorised persons, e.g. DrägerService.
Comply with local calibration guidelines.
6.1
Changing battery
1.
Switch off instrument.
2.
Push the battery cover off.
3.
Change the batteries (3 x 1.5 V AA alkaline batteries). 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 take 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 cleaning agent directly onto the instrument.
Make sure that no liquid enters the gas inlet.
After cleaning, leave the instrument unpacked at room temperature
2.
(20-25 °C) for at least 24 hours.
Then use passive sampling to ensure that there is no residual ethanol inside the
instrument and that the result "No alcohol" is displayed.
Maintenance
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