Performing a Breath Test
Dräger Alcotest 6820 Technical Manual V1.0 2014 5
5 Performing a Breath Test
5.1 Turning the Instrument On and Off
5.1.1 Turning the Instrument On
Press the “OK” button for about on
e second until the start win-
dow is displayed. The instrument performs
a short self-test
right after starting up.
It then goes to the Ready state.
5.1.2 Turning the Instrument Off
Press and hold the “OK” button for a
bout two seconds and the
instrument will shut off.
The instrument will shut itself off if four mi
nutes pass with no
activity.
5.2 Conditions for Testing
Make sure the following conditions are met when performing a
breath test. These conditions ensure the test is accurate:
Use a new mouthpiece for each subject.
Do not unnecessarily introduce high mouth alcohol con-
centrations as this reduces th
e life of the fuel cell.
Do not test the subject within 15 minutes of their drinking
any alcoholic beverages or putting any alcoholic substance
in their mouth. Observe the 15 minute deprivation period.
Ensure the subject breathes normally before giving the
breath sample.
The subject must blow a minimum of 1.2 liters of breath and
blow for at least 2 seconds.
5.3 Fitting the Mouthpiece
1. Open the packaging. To maintain hygienic conditions keep
the portions of the mouthpiece that will come in contact with
the subject’s mouth covered by the packaging until the
mouthpiece is attached to the instrument.
2. With the grooved markings facing up press the mouthpiece
i
nto the receptacle until it snaps into place. Remove the
rest of the packaging.
5.4 Collecting the Breath Sample
When the instrument is ready to test the instrument displays
READY along with a unique test number.
Ask the subject to blow evenly into the mouthpiece without in-
terruption until the tone stops. A stro
ng steady breath is what
you want.
Once the subject starts to blow a tone will sound and the dis-
play will show “Blow”.
When the tone stops the instrument has completed the test
and displays will show “Analyzing”.
Within seconds the result appears on the display.
If you wish to print the results using the Dräger Mobile Printer
see Section 9.
Press the “OK” button to exit the results screen and the instru-
ment will prepare for the next test with a countdown showing
ho
w many seconds are left before it is ready to collect another
breath sample. The time will vary depending on the alcohol
concentration of the last test.
Note that turning off the instrument and turning it back on will
no
t reduce the waiting period.
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