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3.8 Inspection of the endoscopic system
BF-190 Series OPERATION MANUAL
Ch.3
Inspection of the suction function
• Set the aspiration pressure of the suction pump within the range of –34 kPa to
0 kPa. Excessive aspiration pressure may make it difficult to stop suction.
• If the suction valve does not operate smoothly, detach it and reattach it, or replace
it with a new one. If the endoscope is used while the suction valve is not working
properly, it may be impossible to stop suctioning, which could cause patient injury. If
the reattached or replaced suction valve fails to operate smoothly, the endoscope
may be malfunctioning; stop using it and contact Olympus.
1 Turn ON the suction pump.
2 Adjust the suction pressure within the range of –34 to 0 kPa.
3 Immerse the distal end of the insertion section
in sterile water.
Figure 3.25
4 Depress the suction valve and confirm that water is continuously aspirated into the
suction bottle on the suction pump.
5 Release the suction valve. Confirm that suction stops and that the suction valve
returns smoothly to its original position.
6 Remove the distal end of the insertion section from the water. Depress the suction
valve and aspirate air for a few seconds to remove water from the instrument channel
and suction channel.
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