CareFusion MicroCO Operating Manual page 65

If your unit requires service or repair please see page 73 for contact
details. A full service manual including circuit diagram and parts list is
available upon request.
Should you encounter problems operating your MicroCO meter, please
consult the table below:
MicroCO cannot be
switched on or "bat"
is displayed
Battery life is
shorter than
expected
"CEL" is displayed
"Err" is displayed
"bt2" is displayed
"gAS" is displayed
Batteries are flat
Unit not being
switched off
Fuel cell is
depleted
Gas cylinder empty
Internal battery
has expired
Fuel cell is
depleted
Fuel cell is
contaminated by
residual gas or
solvents
63
Change the battery
Turn the unit off after
use
Return unit for cell
replacement
Check valve on cylinder
for contents and replace
cylinder if necessary
Check the calibration
value on the cylinder is
20ppm.
Return unit for battery
replacement
Return unit for cell
replacement
Allow unit to be
exposed to clean air.
Turn unit ON and await
message to disappear,
if not return unit for cell
replacement.