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Chapter 7 Troubleshooting
HIGH FLOW INSUFFLATION UNIT UHI-3
Alarm
Smoke evacuation
is not possible.
Suction capacity is too low. Check the suction pump
to see if it is working
properly, or check tube
connections or whether or
not the tubes are clogged.
Abdominal pressure is less than
3 mmHg.
Increase the abdominal
pressure to more than
3 mmHg.
Suction is
continuous.
The suction tube has not correctly
been inserted into the pinch valve.
Insert it correctly.
Problem Possible cause Solution
Excessive
pressure warning
continually sounds.
Excessive gas volume is released
from other equipment.
Reduce gas volume
released from other
equipment.
Patient anesthetics is no longer
effective.
Perform an appropriate
treatment.
Tube obstruction
warning sounds
continually.
The insufflation tube is collapsed. Correct the collapsed
area.
The veress needle’s stopcock is
closed.
Open the stopcock.
The trocar’s stopcock is closed. Open the stopcock.
The veress needle is not correctly
inserted.
Withdraw and insert
veress needle correctly.
The veress needle is defective. Replace the needle with a
new one.
The filter is clogged. Replace the filter with a
new one.
Insufficient gas
supply warning
continually sounds.
The gas cylinder’s valve is closed. Open valve.
Remaining gas volume in gas
cylinder is insufficient.
Replace the gas cylinder
with a new one.
The cylinder hose for UHI-3 is not
connected.
Connect hose correctly.
The hose for medical gas pipeline is
not connected.
Connect hose correctly.
Pressure of medical gas pipeline is
reduced.
Check the pressure of the
gas supply source.
Problem Possible cause Solution
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