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4.6 Inspection of the endoscopic CO2 regulation unit
UCR INSTRUCTION MANUAL
Ch.4
Inspection of gas and water feeding
When using a water container to feed water from the endoscope, inspect the air and water feeding
function as follows:
If gas feeding cannot be stopped using the air/water valve, press the start/stop
switch to stop the gas supply and then replace it with a new valve.
The gas flow indicator is OFF when water feeding has been continued for a certain
period. Even if the gas flow indicator illuminates again after the water supply has
stopped, it is not a malfunction.
Figure 4.3
1 Confirm that the light source stops supplying air.
2 Press the start/stop switch to start gas supply.
3 Immerse the distal end of the connected endoscope in sterile water and operate the
endoscope’s insufflation function following the instructions given in the endoscope’s
instruction manual.
4 Cover the hole of the air/water valve of the endoscope, and press it so that air bubbles
are emitted. Press the start/stop switch and confirm that the air bubbles from the
air/water nozzle stop. (See Figure 4.3)
5 Remove the distal end of the endoscope from the sterile water and press the
start/stop switch. Operate the endoscope’s water feeding function following the
instructions given in the endoscope’s instruction manual. Confirm that water is emitted
from the air/water nozzle.
Air/water valve
Sterile water