Dräger Alcotest 3820 23
Maintenance
23
en
6 Maintenance
Have the instrument calibrated every six months as signs of drift
increase the uncertainty of measurement over time. Calibration should
only be carried out by authorised persons, e.g. DrägerService.
6.1 Replace battery
1. Switch off the instrument if necessary.
2. Slide the battery cover closed.
3. Replace the battery (battery type: 3 V CR123A; order no.: 83 21 390),
observing the correct polarity.
4. Fit the battery cover.
5. Check that the time is correctly set.
If the battery replacement process takes longer than 5 minutes,
the time must be reset. A measurement is only possible with the
time set.
6.2 Cleaning
Do not immerse in fluids and avoid contact of fluids with the connections.
Do not use any cleaning agents containing alcohol, solvents or
substances containing limonene. Wipe down the instrument with
a disposable cloth.
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