Biopsy Valve
Issue
Cause
Solution
Why is fluid leaking from the biopsy
valve?
The biopsy valve is not attached
properly
Attach it correctly. Close the valve cap
(for MB 358).
The syringe is not inserted securely.
Insert it securely.
Why can I not attach the biopsy
valve?
An incorrect biopsy valve is used.
Use a correct biopsy valve.
The biopsy valve is damaged.
Replace it with a new one.
The biopsy/suction channel is
blocked
Foreign body in channel
Brush & flush channel to remove
blockage
Air/ Water Feeding
Issue
Cause
Solution
No air feeding.
The air pump on the light source is not
operating.
Press the “LOW”, “MED”, or “HIGH” valve
on the light source as described in the
light source’s instruction manual.(EVIS
EXERA II/EVIS EXERA III)
The air/water valve is damaged
Replace it with a new one.
No water feeding.
The air pump of the light source is not
operating.
Press the “LOW”, “MED”, or “HIGH”
valve on the light source as described in
the light source’s instruction manual.
(EVIS EXERA II/EVIS EXERA III)
There is no sterile water in the water
container.
Add sterile water to fill the container to the
specified water level.
The air/water valve is damaged.
Replace it with a new one.
The air/water valve is sticky
The air/water valve is dirty.
Remove the air/water valve. Reprocess
the air/water valve and then attach it
again.
The air/water valve is damaged.
Replace it with a new one.
The air/water valve cannot be
attached.
Incompatible air/water valve is used
Use a compatible air/water valve.
The air/water valve is damaged.
Replace it with a new one.
The air is continuously fed.
The air/water valve is damaged.
Turn the airflow regulator on the light
source OFF and replace the valve with a
new one.
Water is continuously fed.
The air/water valve is damaged.
Rubber seals on valve and stalk
perished or split
Turn the airflow regulator on the light
source OFF and replace the valve with a
new one.
There is no water coming out of
my endoscope.
Air/water bottle not sealed
Check lid on air/water bottle on correctly
O-ring on lid cracked/split or missing
Replace O- ring on lid
O-ring on water bottler cracked /split or
missing
Replace O- ring on water bottle
Overfilled water bottle
Fill to correct level on water bottle
Water bottle empty
Fill to correct level on water bottle
Water bottle not attached to scope
correctly
Attach water bottle correctly
Water bottle may be cracked
Replace water bottle
Auxiliary Water Feeding
Issue
Cause
Solution
The auxiliary water inlet cap is
leaking.
The auxiliary water inlet cap is worn out
Replace it with a new one.
The auxiliary water inlet cap is
incorrectly installed.
Install the auxiliary water inlet cap
correctly.
No water feeding.
The auxiliary water tube is damaged.
Replace it with a new one.