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Siemens-Elema AB
Service procedures Servo …
E382 E407E 061 01 01 02
5 - 6
5
Replacing the membrane in the
expiratory cassette
The expiratory cassette is a complete unit and must
not be disassebled. The only part that can be replaced
is the valve membrane.
Before replacing the membrane, check the remaining
operating time for the expiratory cassette. If less than
10–15% operating time remains, it is recommended
to replace the complete expiratory cassette.
It is very important for the function of the
expiratory valve that the valve membrane is
removed and mounted correctly as described
below.
To remove the valve membrane from the cassette:
• Carefully remove the membrane including retaining
ring using a suitable retaining ring pliers.
SVX9135X
To mount the valve membrane into the cassette:
• Place the retaining ring (1) correctly into the
membrane.
It is very important that the valve membrane and
the membrane seat in the cassette is clean. Dirt
particles can create leakage in the cassette.
SVX9134X
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