Troubleshooting
22
en
Fault / message Cause Remedy
Instrument cannot
be switched on.
Battery drained. Replace battery.
Volume too low /
sample invalid.
Test subject is blowing
intermittently or not
hard enough.
Blow more strongly
and without
interruptions into the
mouthpiece.
Instrument outside
temperature range
Instrument too hot or
too cold.
Allow the instrument to
cool down or become
warmer.
↑↑↑
(Measuring range
exceeded)
Measuring range
exceeded. Alcohol
residues that are still in
the mouth may cause
incorrect measuring
values.
There must be an
interval of at least
15 minutes after alcohol
has been taken into the
mouth (see page 18).
To repeat, press the
button.
Volume too small Breath sample volume
too small.
Repeat breath sample.
Volume too great Measuring range
exceeded.
Repeat breath sample.
Sample interruption Irregular outward
breath, abrupt end or
intake
Repeat breath sample.
Fault number Instrument fault Switch the instrument
off and on again. If the
fault remains, contact
DrägerService.
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