Gambro Cobe Spectra, Essentials Manual

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Helpful Hints and Recovery Procedures
11-12 COBE
®
Spectra™ Apheresis System • Essentials Guide
Dual-Needle Procedure
1
Clamp the line immediately above the return pressure sensor.
2
Remove the return pressure sensor from its housing. Turn
counterclockwise to unlock.
3
If in Run mode, close the return line pinch clamp and open the
return saline line roller clamp.
4
Pull open the return line valve and remove the return line.
5
Lower the saline container until fluid level in container is level with
the centrifuge cover (see Figure 11-4).
6
Wait 10 seconds to allow the diaphragm in the sensor to reposition
itself. (The four dots on the diaphragm move away from the back of
the sensor.)
7
Load the pressure sensor into its housing, keeping the fluid in the
saline container level with the centrifuge cover. Push in the sensor
and turn it clockwise to lock.
8
Rehang the saline container.
9
Reinsert the return line in the return valve.
10
If in Run mode, close the return saline line roller clamp and open
the pinch clamp on the return line.
11
Remove the clamp above the return pressure sensor.
12
Press CONTINUE to resume the procedure.
Figure 11-4: Repositioning the return pressure sensor diaphragm
(Dual-Needle procedures)
Saline
container
Clamp
Return line
valve