77
Troubleshooting
5
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Air/ Water Feeding
Description of abnormality Possible cause Solution
Air feeding is not possible. The air/ water feeding pump of the video
processor is turned off.
Turn on the air/ water feeding pump of the
video processor.
The water bottle assembly is not connected.
Connect the air/ water connector of the water bottle
assembly to the air/ water port of the endoscope.
Cap of the water bottle assembly is loose. Tighten the cap of the water bottle assembly.
Air/ Water feeding valve is damaged. Replace with a new air/ water feeding valve.
Water feeding is not possible. The air/ water feeding pump of the video
processor is turned off.
Turn on the air/ water feeding pump of the
video processor.
The water bottle assembly is not connected.
Connect the air/ water connector of the water bottle
assembly to the air/ water port of the endoscope.
Cap of the water bottle assembly is loose. Tighten the cap of the water bottle assembly.
Switching lever of the water bottle assembly is
set at the “DRAIN” position.
Set the switching lever of the water bottle
assembly at the “A / W” position.
There is no sterile water in the water bottle
assembly.
Fill the water bottle with sterile water.
Air/ Water feeding valve is damaged. Replace with a new air/ water feeding valve.
Air feeding (air bubbles) cannot
be stopped.
The check valve of the air/ water feeding valve
is damaged.
Replace with a new air/ water feeding valve.
Sufficient amount of air/ water
cannot be fed.
Level setting of the air/ water feeding pump of
the video processor is low.
Set an appropriate pump level.
Air/ Water nozzle or endoscope conduit line is
clogged.
Refer to the solution below (*) for when
clogging seems to be the problem.
Air/ Water feeding valve cannot
be operated smoothly.
Air/ Water feeding valve cannot
be restored once it is pressed
in.
The check- valve of the air/ water feeding valve
is damaged.
Replace with a new air/ water feeding valve.
The air/ water feeding valve O - ring is broken. Replace the air/ water feeding valve O - ring.
The O - ring is not coated with silicone oil. Remove the air/ water feeding valve and coat
the O - ring with silicone oil.
Foreign material is stuck between the air/
water feeding valve and air/ water cylinder.
Remove the air/ water feeding valve, and then
clean out the foreign material.
Air/ Water feeding valve cannot
be attached.
Foreign material in the air/ water cylinder. Remove the foreign material from the air/
water cylinder, and then attach the air / water
feeding valve.
Air/ Water feeding valve is damaged. Replace with a new air/ water feeding valve.
Incorrect air/ water feeding valve is being used. Use the correct air/ water feeding valve.
*How to deal with the blockage in the air/ water nozzle or channel
Perform the following procedure if air/ water cannot be fed smoothly and blockage in the nozzle or
channel of the endoscope is suspected.
1. Turn off the air/ water pump of the video processor.
2. Turn off the video processor, remove any ancillary equipment attached to the endoscope, and
disconnect the endoscope from the video processor.
3.
Remove the air/ water feeding valve (OF- B188) and suction control valve (OF - B120) from the endoscope.
4. Attach the cleaning adapter (OF - B153) and the cleaning adapter (OF - G17) to the endoscope in
accordance with the IFU (Reprocessing) provided with this product.
5. Attach the syringe filled with water to the cleaning adapter (OF - G17), and inject water into the
channel of the endoscope.
6. Repeat step 5 two or three times.
7. Fill the syringe with air, feed air into the channel of endoscope, and remove water remaining inside
the channel.
8. Inspect the air/ water feeding function again.
If the problem persists after performing the above procedure, send the endoscope for repair in accordance
with “5 - 3. Returning the endoscope for repair” (p. 80). If the problem is resolved by the procedure,
perform cleaning, high - level disinfection, and /or sterilization of the endoscope before using it again.
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