ZOLL AEV Operator's Manual page 150

P C
ATIENT IRCUITS
If the exhalation valve is not performing, manually ventilate the patient and perform the
following procedure:
1. Using a hemostat or a tongue blade, carefully open the exhalation valve as we show in the
following illustration. Remove the top cover first, and then remove the silicon diaphragm.
Place the silicon diaphragm in a clean area.
Figure D-3 Removing Silicon Diaphragm-- Pediatric/Adult Patient Circuit
Examine the silicon diaphragm for kinks, cuts, holes, or inconsistencies in the material.
2.
If the diaphragm is kinked, relax the silicone diaphragm with your fingers, ensuring that
there are no longer any kinks (this usually takes a few seconds).
If the diaphragm has a hole or cuts, replace the patient Circuit.
Figure D-4 Examining the Patient Circuit's Silicone Diaphragm
Carefully re-seat the silicone diaphragm in the exhalation valve seat. Tap around the silicone
3.
diaphragm lightly to ensure that kinks do not develop when closing the exhalation valve.
Locate the top of the exhalation valve, taking care not to touch the silicone diaphragm. Ensure
4.
that the barbed end with tubing is pointing into the FLOW direction. Apply enough pressure
to snap the exhalation valve cover in place.
D-6
Examine both sides Relax silicone with
of Silicone Diaphragm
opposing pressure
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Silicone Diaphragm
should be free of any
kinks or deformities
906-0731-01-05 Rev. C