System Description
X
TRA Operator’s Manual 20077/021 US 3-11
Clamps
The XTRA uses three clamps to control the flow of fluids during normal processing of blood. The clamps
determine which fluids are routed at each processing stage. The clamp lid allows fixing the tubing lines
in place for proper clamp functioning during the case (see Figure 3-15).
Figure 3-15 Left: Clamps With Clamp Lid Open | Right: Clamp Lid Closed and Latched
The location and state (open or closed) of the three clamps during each processing phase are shown
in the following table. A clamp is closed when the clamp plunger is extended and totally occludes the
tubing, shutting off all fluid flow.
The clamps are electronically controlled and mechanically operated in the all operating modes. If the
microprocessor detects an error in the operation of the clamps, an audible and visual alarm occurs and
the system stops processing (refer to “Alarms and Warnings” on page 14-1).
Tubing Valve Located Between Valve Positions During Cycles
Color Name Fill Wash Empty Return Concentrate Purge
Blue Fill Reservoir/Bowl Open Closed Closed Open Closed Closed
Yellow Wash Wash Solution/Bowl Closed Open Closed Closed Closed Closed
Red Empty Bowl/Reinfusion Bag Closed Closed Open Closed Open Open
1
2
3
4
5
1 Clamp lid 4 Empty clamp
2 Fill clamp 5 Clamp lid latch
3 Wash clamp
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