Plusmed pM-7E A Mode D'emploi page 15

Note: Dredge the suction catheter if blocked as per the following method: Bend the suction conduc-
tor in "V" form (with no liquid in the holder), and release it to the original status when the negative
pressure reaches up to the maximum value. Repeat this procedure several times till the catheter is
not blocked.
5. Negative pressure regulating
Block the suction inlet, open the aspirator switch and regulate the negative pressure valve, and the
readings on the pressure meter shall be within 150 mmHg ~ limit negative pressure.
• Control the negative pressure as required for suction by means of the negative pressure valve at
the time of clinical practice;
• Increase the negative pressure by turning the valve clockwise;
• Reduce the negative pressure below 150 mmHg prior to power shut-off.
6. Inspection & test on the overflow device
• Open the holder plug; clean up the valve mouth, and leveling the rubber valve clack on the float.
The valve clack shall not be warped, bent and broken, but well connected with the float. The float
shall be able to move freely in its support without any blockage;
• Lift the holder plug with hand to make the float contact the water surface perpendicularly. Gradu-
ally lower the holder cover to let the float rise;
• Tighten the hold plug, attach the suction tube conductor at the inlet, and screw firmly the regulat-
ing valve, then, actuate the aspirator;
• Put the suction conductor into one clean water pail or attempt to simulate actual application to
suction the liquid into the holder of the overflow device. As a result, the float will rise as the liquid
level ascends until the valve is closed and suction stops automatically. The final position of liquid
level depends on the suction process adopted;
• Release the regulating valve, set the aspirator switch off, open the holder plug and empty the
liquid in the holder. The float shall be at the bottom of the support and the valve is in open status
in case of re-screwing firmly the hold plug;
If so, the overflow device is considered as being in normal condition, which can be used for clinical
practice.
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