Chapter 7 Troubleshooting
137
HIGH FLOW INSUFFLATION UNIT UHI-4
Suction
Insufflation is not possible. The insufflation switch is not pressed. Press the insufflation switch
The valve on a gas cylinder is closed. Open the valve on a gas cylinder.
The cylinder hose or the hose for medical
gas pipeline is not connected.
Connect the cylinder hose or the hose for
medical gas pipeline correctly.
The gas cylinder is not an upright position.
(The liquid CO
2
has entered the
instrument and frozen its channel.)
Place the gas cylinder in an upright
position. Turn the power on and wait
5 minutes or more before operating.
Remaining gas volume in gas cylinder is
insufficient.
Replace the gas cylinder.
The insufflation tube is not connected. Connect the insufflation tube.
The insufflation tube is collapsed. Correct the collapsed area of the
insufflation tube.
The insufflation tube is perforated. Replace the insufflation tube.
The stopcock of the veress needle or the
trocar is closed.
Open the stopcock of the veress needle or
the trocar.
The veress needle or the trocar is not
correctly inserted.
Withdraw and insert the veress needle or
the trocar.
The veress needle or the trocar is
defective.
Replace the veress needle or the trocar.
Insufflation into narrow cavity. Withdraw and insert the veress needle or
the trocar correctly.
The filter is clogged. Replace the filter.
The relief mode is not
performed.
The relief mode is set to “OFF”. Set the relief mode to ON.
Problem Possible cause Solution
Automatic suction is not
performed.
The insufflation switch is not pressed. Press the insufflation switch.
The stopcock of the trocar is closed. Open the stopcock of the trocar.
The suction tube is not connected. Connect the suction tube.
The suction tube is collapsed. Correct the collapsed area of the suction
tube.
The suction tube is clogged. Remove the foreign matters from inside
the suction tube.
The suction tube has not correctly been
inserted into the pinch valve.
Insert the suction tube into the pinch valve
correctly.
Problem Possible cause Solution
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