Dräger Narkomed 2B Operator's Instruction Manual page 51

Manual and
Automatic Ventilation
Systems
Monitors
*26. Test the ventilator.
A. Check for proper pressure and flow at the Y-piece during
the inspiratory and expiratory phases. Turn the SYSTEM
POWER switch and ventilator power switch to their ON
positions. Place the manual/automatic selector valve in the
AUTO position. Adjust the oxygen flow control valve to a
3 l/min flow. Set the ventilator frequency to 3 BPM, the
I:E ratio to 1:2, and the tidal volume to about 1 liter. (If
testing the Pediatric Bellows or Adult/Pediatric Bellows,
adjust the tidal volume to 200 ml.)
Adjust the ventilator inspiratory flow control to the
maximum of the "low" zone on the flow gauge. Occlude the
patient side of the Y-piece. Fill the ventilator bellows by
pressing the oxygen flush button. Observe the breathing
system pressure gauge as the ventilator cycles.
The pressure gauge must indicate a pressure over 30
cmH O when the bellows completes its downward travel.
2
The pressure should not exceed 3 cmH
expiratory phase when the bellows completes its upward
travel.
B. If the system is equipped with a PEEP valve, verify the
PEEP valve's performance. Attach a breathing bag to the
patient Y-piece with an appropriate adapter such as an
NAD combination mask elbow with a 22 mm male fitting
for the breathing bag and 15 mm male fitting for the
Y-piece. With the manual/automatic selector valve in the
AUTO position, set the ventilator to the preferred
frequency.
Set the PEEP bypass switch to the PEEP ON position.
Then adjust the PEEP valve to different values and
observe the breathing system pressure gauge to verify
performance. Turn the PEEP valve control knob fully
counterclockwise to its lowest setting after the test is
completed. Set the PEEP bypass switch to the PEEP OFF
position.
27. Check the alarm limit settings. The monitor alarm limits are
automatically set to a default configuration when the SYSTEM
POWER switch is turned on. Check these settings and adjust
them if necessary. Alarm limits can be adjusted at the beginning
of or during a procedure. Also, make sure that any external
monitors (if any) are connected properly and that the alarms
sound through the anesthesia machine's central audio
annunciator.
Section 3
Daily Checkout
O at the end of the
2
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