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REF: WM4 User Manual V7.docx
Page 13
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b.
Close and lock the instrument.
c.
Plug the power cord into a power outlet and turn the power on.
d.
Plug any other cords into their devices.
The instrument will take several minutes to start up and will take a further 10 minutes to
perform its first self-calibration. After this, the instrument will be calibrated and ready for
use.
4
Operating Instruction
4.1
Providing a breath sample
Perform a breath test in accordance with the following procedures:
a.
Ensure the instrument is ready to take a sample. This is indicated with a
welcome screen and instructions on how to provide a breath sample. There
may be a specific customer welcome screen.
b.
Take a straw from the straw holder.
c.
Place straw in the sample port.
NOTE
Food or drink must not be consumed for the 10 minutes prior to testing.
The BAC can continue to rise for up to two hours after the cessation of drinking, care should be
taken if a result close to the designated BAC limit is indicated.
It can take 10 hours or more for the BAC level to return to zero after a high BAC level has been
reached, in such cases further tests should be carried out later in
the day or the following morning.
CAUTION
Never inject fluids into the sample port. This could render the instrument inaccurate for
subsequent tests or temporarily disable it and may void any instrument warranty
Gas on/off
valve