Olympus EVIS EXERA II Operation Manual page 43

Inspection of the objective lens cleaning function
1.
Keep the air/water valve's hole covered with your finger and depress the
valve. Observe the endoscopic image and confirm that water flows on the
entire objective lens.
2.
Release the air/water valve. While observing the endoscopic image, confirm
that the emission of water stops and that the valve returns smoothly to its
original position.
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
EVIS EXERA II TJF TYPE Q180V OPERATION MANUAL
Use sterile water only. Nonsterile water may cause patient
cross-contamination and/or infection.
• When the air/water valve is depressed for the first time, it
may take a few seconds before water is emitted.
• If the air/water valve returns to its original position slowly after
water feeding, remove the air/water valve and moisten the
seals with sterile water.
• During the inspection, place the distal end of the endoscope
in a beaker or other container so that the floor does not get
wet.
• 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 suctioning, 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
39