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Aespire 7900
Pneumatic problems
Symptom
High-pressure leak test
fails.
Low-pressure leak test
fails with a vaporizer on.
Low-pressure leak with a
vaporizer OFF.
w CAUTION
4-16
Problem
Controls are not set correctly.
Incorrect cylinder connection (cylinder
yokes).
Incorrect cylinder connection (DIN
connection.)
The vaporizer is not correctly installed.
The vaporizer filler is loose (fill port type
vaporizer).
Vaporizer port o-rings (external) are damaged
or not installed.
A vaporizer malfunction (the leak stops if you
use a different vaporizer in the same
position).
A port valve malfunction (the leak continues
if you use a different vaporizer in the same
manifold position).
Anesthesia machine problem.
No repair should ever be attempted by anyone not having
experience in the repair of devices of this nature.
Solution
Set the system switch to
Standby and the auxiliary
flowmeter to OFF.
Make sure that there is only
one cylinder gasket, the
gasket is in good condition,
and the T- handle is tight.
Make sure the nut is tight.
Correctly install the
vaporizer.
Tighten the filler.
Install new o-rings.
Send the vaporizer to a
Datex-Ohmeda Service
Center for repair.
Have an qualified service
person repair the vaporizer
manifold.
Contact a qualified service
representative.
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