Accu-Chek Compact Plus User Manual page 18

The meter is unable to calculate the 90-day use-by period if
you insert a partly used drum in the meter, even if it is the same one
you have just removed,
the year, date and time settings are lost when you replace the bat-
teries (see Chapter 9), and a partly used drum remains in the meter.
The meter has no way of telling you in these cases when the drum was
first inserted or how long the partly used drum has already been in the
meter.
If the meter cannot calculate the use-by period and you turn the meter
on to perform a test, the following symbols appear in the display:
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Initial steps before testing
Flashing test strip and flashing drop, indicating that you may now
apply blood or control solution
Drum, indicating that the use-by period cannot be calculated
Flashing bottle, prompting you to perform a performance check in
order to check the test strips
Perform a performance check (see Chapter 7).
If the result from the performance check is within the stated concentra-
tion range, you can still use the test strips remaining in the drum. If the
result is outside the range, you need to insert a new drum.
Following the performance check, the bottle symbol disappears from the
display. If you do not perform a performance check, the flashing bottle
symbol appears with every test until you insert a new drum. The drum
symbol continues to be displayed with each test in order to draw your
attention to the fact that the meter cannot calculate the use-by period.
All results are saved along with the drum symbol. The drum symbol only
disappears when you insert a new drum.
Initial steps before testing
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