Replacing The Battery - Dräger Alcotest 5820 Instrucciones De Uso

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6
Maintenance
Dräger recommends a device calibration every 12 month, because of
the sensor drift the uncertainty of measurement increases over time.
Instrument calibration and maintenance should only be carried out by
authorized persons, e.g. DrägerService.
The last 30 days before next adjustment / service is needed, a day
count down will be shown as information in the display after switching
on the device. You have to confirm this information with the
After the adjustment / service date the device starts to count up how
many days it is over requested adjustment / service. This information
has to be confirmed by pressing the
remember you that the device needs to be adjusted / serviced.
Have the instrument re-calibrated, if an accuracy check does not
produce a result per NHTSA's EBT Model Specifications. Calibrations
should only be carried out by authorized persons, e.g. DrägerService.
6.1

Replacing the battery

1. If necessary, switch off the device.
2. Slide the battery cover off.
3. Replace the battery (battery type: 3 V CR123A; order no.
83 21 390), by observing the correct polarity.
4. Replace the battery cover.
5. Verify that the time is set correctly.
If the battery replacement process takes longer than 5 minutes,
the time must be reset. A measurement is only possible with the
time set.
Maintenance
button as well. It shall
en
button.
13

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