
5.3.3
Sensor Low Indication
The unit automatically detects when sensor
life is low.
The message:
OXYGEN SENSOR LOW OUTPUT
will appear on screen to indicate that the
sensor must be replaced.
The sensor output will fall very quickly to
zero over a period of two to three weeks
from the first time that the alarm is
activated.
Sensor replacement - see section 6.5.
5.3.4
Setting the O
2
Alarms
5.3.4.1 Set High Alarm
The high alarm value cannot be set below
19% or above 105% (Note that in certain
conditions of excess pressure, the readout
may show a value above 100%.).
1.
Touch the O2 concentration display, or
Press the menu switch on the
ventilator front panel and select the O
2
monitor sub-menu.
2.
Scroll to HIGH ALARM SET and
press the navigator wheel.
3.
Rotate the wheel to change the
displayed alarm figure to the desired
value.
4.
Press the wheel to confirm.
5.
Scroll to ESCAPE FROM MENUS
and press the wheel to exit.
5.3.4.2 Set Low Alarm
The low alarm value cannot be set lower
than 18%, or above 99%.
1.
Touch the O2 concentration display, or
Press the menu switch on the
ventilator front panel and select the O
2
monitor sub-menu.
2.
Scroll to LOW ALARM SET and
press the navigator wheel.
3.
Rotate the wheel to change the
displayed alarm figure to the desired
value.
4.
Press the wheel to confirm.
5.
Scroll to ESCAPE FROM MENUS
and press the wheel to exit.
PRE-OPERATION PROCEDURES - O
2
Monitor
53
Low Alarm
Set Value
High Alarm
Set Value
O2 Monitor & Spiro
ESCAPE FROM MENU
O2 MONITOR: on
CALIBRATION: 100%
>
HIGH ALARM SET: 105
LOW ALARM SET: 18
SPIROMETER: on
SPIRO CALIBRATION: 0 L/min
On/Off Switch
Alarm Mute
Menu Switch
Navigator
Wheel and
Press Button
%O
2
100
21
20
.
.
IO
o
o
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