Accu-Chek Compact Plus Manuel De L'utilisateur page 31

If you insert a partly used drum in the meter, the meter rotates
i
the drum so the dot appears in the control window on the back.
When you subsequently turn on the meter to perform a test
and ...
... you have re-inserted a same drum you previously
removed:
The meter immediately rotates the drum to the first chamber
that contains a test strip, and ejects the strip.
... you have used up the previous drum or have replaced one
partly used drum with another partly used one:
The meter may search all chambers until it finds the first one
that contains a test strip. The fewer test strips the drum
contains, the longer the process takes.
If the meter immediately rotates the drum to one of the
chambers near the end (you can tell by the noise of the motor
that rotates the drum), the drum may ultimately still contain
test strips even though the meter regards it as empty. You can
still use the test strips by inserting the drum again.
Initial steps before testing
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