9
Routine Maintenance
1.
Replace batteries when indicated by the empty symbol
.
2.
Bedfont recommend removal of the batteries when the device is not used for prolonged
periods of time to prevent leakage.
3.
Replace breath sampling D-‐piece every 30 days or if visibly soiled or contaminated. The
piCO™, piCO
baby™
and
Micro
+
™ Smokerlyzer® products will give a reminder during start-‐up
when the D-‐piece should be replaced, see ‘Change D-‐Piece’ symbol.
4.
The sensor should be replaced every 5 years, 60 days prior to the sensor change ‘Countdown
to sensor change’ symbol will be shown with the date on which the sensor should be
changed. This can be ignored by pressing
until the date at which the sensor should be
changed arrives, at this point the ‘Change Sensor’ symbol will be shown. Change sensor if
trained to by an approved Bedfont engineer or send to Bedfont or the local representative.
5.
Additional technical information can be made available on request; please contact Bedfont
or its distributor.
Troubleshooting
The unit fails to turn on:
If the unit fails to turn on, replace the batteries. Ensure that the batteries are inserted the correct
way around, matching the symbols moulded into the plastic.
High readings recorded for reported non-‐smoker:
If a breath test on a non-‐smoker gives an indication of CO being present, it may indicate the
following:
1.
A high ambient level of CO (possibly due to a faulty combustion appliance or exhaust fumes).
2.
The effects of passive smoking.
3.
The device is contaminated by alcohol or another organic substance.
4.
The patient may have a very high level of hydrogen on their breath, which can be generated
in the human digestive system.
5.
The sensor may have drifted out of specification (see below).
The sensor has drifted out of specification:
Smokerlyzer® products are calibrated before leaving Bedfont, however we recommend if you
suspect the instrument is reading incorrectly, try the test again with another device if available to
get a comparison. Alternatively you check the function using Bedfont check gas or send back to
Bedfont. The check gas required is Bedfont 20ppm carbon monoxide in air, procedure below.
1.
Ensure the fine control valve is in the off position.
2.
Screw the fine control valve and flow indicator assembly to the gas can. This is best done by
screwing the gas can into the valve.
3.
Press ‘Breath Test’ symbol on screen,
or
, to start a breath test.
4.
When prompted by the ‘Exhale’ symbol,
or
, open the fine control valve or
regulator and allow the gas to flow at 1 litre per minute.
