Microlife AG1-40 - Manual (Page 12)

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4.4. Manipulate the push-button valve
The special push-button valve of BP AG1-40 allow user to deflate the manometer gradually
by pushing the button of air release valve. Turn the screw to tight up the valve before inflating.
After the pressure is high enough, deflate the manometer by slightly press the button so that
the pressure reduces at 2 - 3 mmHg per second suitable for taking readings. Press the button
repeatedly until the deflation is completed. Press the button more hardly, the air goes out more
rapidly. Holding the button will defalte the manometer continously.
4.5. Measuring procedure
4.5.1. Put the chestpiece under the cuff
The chestpiece shall not be placed ON or INTO the cuff, it
shall be placed either under the cuff, or 1 - 2 cm below it. The
chestpiece is then placed correctly , when the Korrotkoff’s
sound appears strongest («loudest»).
Make sure the chestpiece is in contact with skin and above
the brachial artery. Wear the binaural (earpieces) properly to
check the Korotkoff’s sound during measurement.
Before using the stethoscope, be sure there is no crack on
the diaphragm, earpieces, and tubing. Any improper setup
or damage of the stethoscope will cause distorted sound or
poor sound transmission to make inaccurate reading.
4.5.2. Inflating the cuff
Close the air valve by turning the screw clockwise. Do not
over-tighten. Squeeze the inflation bulb with the hand at
a steady rate until the pointer on the gauge is 30 mmHg
above your normal systolic pressure value. If you are not
sure the value, inflate to 200 mmHg first.