Olympus EVIS EXERA II Operation Manual page 42

Chapter 3 Preparation and Inspection
Inspection of the air-feeding function
38
1.
Set the airflow regulator on the light source to "High", as described in the
light source's instruction manual.
2.
Immerse the distal end of the insertion section in sterile water to a depth of
10 cm and confirm that no air bubbles are emitted when the air/water valve
is not operated.
3.
Cover the hole in the air/water valve with your finger and confirm that air
bubbles are continuously emitted from the air/water nozzle.
4.
Uncover the hole in the air/water valve and confirm that no air bubbles are
emitted from the air/water nozzle.
If a stream of air bubbles is emitted from the air/water nozzle
even though the air/water valve is not being operated and the
distal end of the insertion section is 10 cm or more below the
surface of the sterile water, there may be an irregularity in the
air-feeding function. If the endoscope is used while air is
continuously fed, over-insufflation and patient injury may
result. If air bubbles are emitted from the air/water nozzle,
remove and reattach the air/water valve correctly, or replace
it with a new one. If this fails to stop air bubbles from being
emitted, do not use the endoscope because there may be a
malfunction. Contact Olympus.
When the distal end of the insertion section is immersed less
than 10 cm below the surface of the sterile water, a small
amount of air bubbles may be emitted from the air/water
nozzle even when the air/water valve is not operated. This
does not indicate a malfunction.
EVIS EXERA II TJF TYPE Q180V OPERATION MANUAL