P/N 53063-30, Manual revision: B
6-5
Cell Saving using Manual Operation
To modify the parameter settings:
" Press the Modify key to access the manual setup menu:
Figure 6-5, Example of the MANUAL mode setup menu
" Press the Select key to scroll the list and highlight the selected param-
eter.
" Press the Arrow keys to adjust the value displayed.
" Press the Modify key to return to the STANDBY state screen display.
In the MANUAL mode the operator has the possibility of disabling the waste
bag weigher by setting the parameter to OFF, in which case the notice
messages will not appear when the waste bag is almost full and then
completely full. The customary beep which is heard when an error condi-
tion is detected can also be set to OFF.
All modifications to the preset parameters will be retained from procedure
to procedure until modified again or reset to the default values by the oper-
ator.
Explaining the recentrifugation delay
Once the centrifuge bowl has been stopped, red blood cell separation is
lost. This settling of cells could lead to an RBC spillage if fluid is pumped
into the bowl before the cells are allowed to separate again when the
process is resumed. To prevent this, there is a “recentrifuge delay” which
will spin the centrifuge bowl for a few moments to separate the cells before
pumping more fluid into the bowl when processing is resumed for a FILL,
WASH or CONCENTRATION state.
The delay is important to ensure proper separation, however it can be over-
ridden as follows:
" Press the Start key twice upon resuming the process.
If the delay is overridden, the operator must be aware of the possibility of
cell spillage caused by pumping fluid into a bowl of red cells with poor or
no separation.
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