13. 1:E RATIO
Verify the
1:E ratio displayed for the following settings of BPM
and lnspiratory Time.
BPM
'
I .T.(Sec.) Calculated Value
of
1:E Ratio
NOTE: The El50 has an I:E ratio ranging from 4:1 to 1:99. The
display will flash when the
I:E ratio exceeds 199.
14. MANUAL BREATH
1.
Turn Resp. Rate to 10 BPM.
2.
Depress the manual breath switch and verify that
a
breath is
delivered each time the manual switch is depressed.
NOTE: The duration of the manual breath is limited to period for
which the switch is depressed. The maximum duration of
the breath is limited to 2.0
secs.
15. ALARM SILENCE
1. Pull out the breathing tube at the main flow outlet. The low
pressure alarm will sound.
2.
Depress the alarm silence switch.
3.
Verify that the alarm is silenced for one minute.
4. Depress the Silence switch. The Silence display should turn on.
16. EXPIRATION
TIMWLED
1.
Turn the mode selector to SlMV plateau.
2.
Verify that the Expiratory Time LED lights up and the display
now displays Expiratory Time instead of tidal volume.
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