FujiFilm ED-580XT, Operation Manual

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897N200877B
4-28
Chapter 4 Preparation and Inspection
4.7.3 Inspecting Air/Water Supply Function
WARNING
• If water leaks from the air/water valve during the inspection of the air/water supply
function, replace it with a new one already reprocessed. A leaking air/water valve may
cause backflow of body fluid, posing an infection control risk.
(1)
Turn on the suction unit, cart, processor and light source. Keep the light of the light source off.
(2)
Prepare a container of sterile water.
(3)
Immerse the distal end of the endoscope in sterile water to a depth of about 60 mm and
confirm that no air bubbles come out of the air/water nozzle.
Note When the distal end of the endoscope is immersed less than 60 mm below the surface
of the sterile water, a small amount of air bubbles may come out from the air/water
nozzle even when the hole in the air/water valve is not covered. This does not indicate
a malfunction.
(4)
Cover the center hole of the air/water valve with your finger, and be sure that air comes out of
the air/water nozzle. Release your finger from the hole and check that air does not come out of
the nozzle.
Note
Manipulation method differs when a gas/water valve for an endoscopic CO
2
regulator
is used. For details on how to use, refer to the operation manual of the endoscopic
CO
2
regulator.
(5)
While still within the container, withdraw the scope tip to just above the fluid, then press the air/
water valve, and check that sterile water comes out of the air/water nozzle.
Note Note the direction in which sterile water comes out. Water should flow directly over the
objective lens.
(6)
Release the air/water valve. Confirm that water supply stops and the valve returns to its
original position.
(7) Set the air supply pump’s operation of the light source to “OFF.”
ED580XT_E2-30_897N200877B.indb 28 2018/09/20 15:50:23