P/N 53063-30, Manual revision: B
5-20
Cell Saving using Automatic Operation
Wash volume monitoring
During an automatic WASH state, an ongoing volume of wash solution used
during the current wash cycle is displayed on the left side of the display
screen, as visible in the following figure.
Figure 5-14, Example of a WASH state screen display
This
Wash volume
accounting function returns to zero each time the WASH
state is entered and terminates when the CS5+ system advances to the EMP-
TY state. The cumulative total of wash solution volume used for all of the
wash cycles performed during the procedure is listed in the procedure statis-
tics area on the right side of the display screen as
Wash vol
.
Volume accounting function
The volume accounting function (VAF) of the CS5+ device allows the opera-
tor to monitor the approximate volume of fluid processed and the approxi-
mate fluid volume of fluid returned to the patient by the CS5+. This informa-
tion is constantly displayed and updated during each operating state.
To ensure the accuracy of the volume accounting function, it is important to
remember the following guidelines:
!
The operating room suction must not be regulated at too high of a
pressure setting. Vacuum settings in excess of –200 mmHg could
compromise the efficiency of the CS5+ occlusive roller pump. This
would in turn would compromise the accuracy of the volume
accounting function which assumes a certain volume of fluid per
pump revolution.
!
Subsequent to an empty reservoir message, the operator should not
press the Start key to fill the bowl until at least 500 ml of fluid have
are present in the reservoir. Processing smaller volumes may cause
the volume accounting functions to overestimate the processed vol-
ume. Because the red reservoir line contains no fluid whenever the
reservoir is drained, the air in the length of tubing from the pump to
the reservoir is pumped into the bowl before fluid may be pumped.
Frequently resuming the FILL state for small amounts of fluid will
cause a disproportionate ratio of air to fluid.
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