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A
C
C
LYX
OMPONENT
OLLECTION
C
2 – S
O
HAPTER
YSTEM
2-12
S
O
YSTEM
PERATOR
VERVIEW
Pneumatic Pumping System
The pneumatic pump block is located in the cassette
compartment behind the blue gasket, which can be seen when
the cassette door is opened. The pump block and gasket
interface with the cassette on the disposable kit to form the
pumping system.
The cassette has depressions that mirror features in the pump
block. Together they form channels and chambers, filled either
with air or fluid. Fluid is moved throughout the cassette by
cycling between negative and positive air pressures, and by
directing where fluid enters and leaves these chambers.
Arrows
showing
cassette
guides
Pump Block with Gasket and Cassette Guides
Cassette guides around the pump block assure proper
alignment between the pump block and the cassette when it is
installed. An expandable bladder on the inside of the cassette
compartment door inflates and pushes the cassette toward the
pump block when the cassette door is closed.
The larger chambers in the A
drive fluid through the cassette. Other small chambers formed
by the cassette and pump block, known as valves, can be opened
or closed to control fluid pathways.
'
M
S
ANUAL
pumping system are used to
LYX
07-19-01-518 – January 2009
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