2-26 System Description
P/N 39551-00, Rev. F
Manual
Vacuum
Release Button
The Manual Vacuum Release Button allows for emergency release of the centri-
fuge vacuum in MCS+ device units containing a vacuum centrifuge. Upon press-
ing the Vacuum Release Button, vacuum is bled off from the Centrifuge allowing
the Centrifuge bowl to be removed. This may be necessary in the case of a power
failure when the MCS+ device has not automatically released this vacuum. The
Vacuum Release Button is located on the back panel of the MCS+ device.
Warning! At no time during routine machine operation
should the Vacuum Release Button be pressed. Release of bowl
suction during operation may cause damage to the Centrifuge
bowl.
Bowl Optics
Sensor
An Optical Sensor in the Centrifuge Well is aimed at the core of the bowl. As var-
ious components pass between the sensor and the core, the sensor measures the
optical reflection from the blood in the bowl.
The bowl Optics Sensor detects the interface between the plasma and the buffy
coat layers in the spinning bowl. The sensor initiates the surge collection of plate
-
lets, ends plasma collection, or signals the next step in therapeutic procedures.
Refer to Chapter 3 for more detail.
Fluid Detectors The Fluid Detectors, mounted in the wall of the Centrifuge, are responsible for
stopping the Centrifuge and the pumps if fluid comes in contact with them.
Warning! A detection of fluid by the fluid detectors invali-
dates extended storage dating for single donor platelets.
LINE SENSOR
The Line Sensor, located on the MCS+ device deck to the right of the Centrifuge,
monitors the density of the blood components in the effluent tubing after they
exit the bowl.
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