Accu-Chek Compact Plus Reference Manual page 19

Test strip drum use-by period
When you insert a new drum, the meter starts to count the number
of days the drum has been in the meter. Each drum must be used up
within a 90-day use-by period.
If a drum has been in the meter for 90 days and you turn the meter on
to perform a blood glucose test, the following symbols appear flashing
in the display:

test strip and blood drop, indicating that you may now apply blood,

drum, bottle and clock, indicating that the 90-day use-by period for
the drum has expired.
The test strips in this drum cannot be used. You must not use
these test strips as they may produce incorrect results. Incorrect
results can cause the wrong therapeutic decision to be taken and
so produce adverse health effects.
Insert a new test strip drum.

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Initial steps before testing
The meter is unable to calculate the 90-day use-by period if you

remove a partly used drum from the meter and then insert it again,

take longer than two minutes to replace the batteries (in which case
the year, date and time settings are lost) and a partly used drum
remains in the meter.
The meter has no way of telling 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 blood glucose test, the following symbols appear flash-
ing in the display:

Test strip and blood drop, indicating that you may now apply blood.

Drum, indicating that the use-by period cannot be calculated.

Bottle, requesting you to perform a quality control test in order to
check the test strips.
Initial steps before testing
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