Section 1 • Introduction
22
2.4
Attach Cassette to Pump
Insert the cassette onto the top of the pump, as shown. Align and
gently squeeze the tabs on the cassette to attach to the pump.
NOTE:
Once the cassette has been properly placed on the
pump, free-flow (unimpeded flow due to forces not
generated by the pump) cannot occur because the
cassette disc bottom has been snapped into place.
2.5
Remove Cassette from Pump
To remove the cassette, press both cassette release tabs at the same time
and lift the cassette off the pump.
CAUTION:
Do not remove the cassette while the green run light is
blinking. Always place the pump in pause mode first.
Failure to do so will cause (1) part of the history to be
lost, (2) possible under-infusion, and (3) the pump to
sound an alarm when the pump attempts to infuse
medication.
NOTE:
The filter bonded to the ambIT
®
cassette tubing is an air-elimination filter
(“AEF”). The AEF has two membranes. The larger membrane is a hydrophilic
membrane and the smaller membrane is a hydrophobic membrane. The
hydrophobic membrane will not allow water to flow through it. However, in
conjunction with some other liquids, such as organic liquids, water may be
permitted to flow through the hydrophobic membrane.
NOTE:
When the filter is dry, both the hydrophilic membrane and the hydrophobic
membrane will allow air through. Once the hydrophilic membrane comes in
contact with water (is “wetted”) air will not flow through the membrane until
the bubble point is reached. (The bubble point is the pressure required to force
air through the wetted hydrophilic membrane).
NOTE:
Due to the nature of the hydrophilic membrane, it is important to prime the
ambIT
®
filtered cassette without getting water in the filter. This will allow air to
flow through very easily. Once the filter is wet, it may be more difficult to prime,
because the air has a much smaller area to flow out of (air will only flow out of
the smaller hydrophobic membrane).
F
F
ambIT
®
pump
Tubing
on left side
of pump
Larger tab on
right side
Sensor
alignment
