Olympus Evis Exera II Instructions Manual page 59

3.
While observing the endoscopic image, feed air after feeding water by
covering the hole in the air/water valve with your finger. Confirm that the
emitted air removes the remaining water from the objective lens and clears
the endoscopic image.
Inspection of the suction function
1.
Place the container of sterile water and the endoscope on the same height.
For the inspection, adjust the suction pressure to the same level as it will be
during the procedure.
2.
Immerse the distal end of the insertion tube in sterile water with the
endoscope's instrument channel port at the same height as the water level
in the water container. Press the suction valve and confirm that water is
continuously aspirated into the suction bottle of the suction pump.
3.
Release the suction valve. Confirm that suction stops and the valve returns
to its original position.
4.
Depress the suction valve and aspirate water for one second. Then, release
the suction valve for one second. Repeat this several times and confirm that
no water leaks from the biopsy valve.
5.
Remove the distal end of the endoscope from the water. Depress the
suction valve and aspirate air for a few seconds to remove any water from
the instrument channel.
EVIS EXERA II GIF/CF/PCF TYPE 180 Series OPERATION MANUAL
• If the suction valve does not operate smoothly, detach it and
reattach it, or replace it with a new one. If the endoscope is
used while the suction valve is not working properly, it may
be impossible to stop suction, which could cause patient
injury. If the reattached or replaced suction valve fails to
operate smoothly, the endoscope may be malfunctioning;
stop using it and contact Olympus.
• If the biopsy valve leaks, replace it with a new one. A leaking
biopsy valve can reduce the efficacy of the endoscope's
suction system, and may leak or spray patient debris or
fluids, posing an infection-control risk.
Chapter 3 Preparation and Inspection
55