866.4.Maxtec www.maxtec.com 9
3. Pressing of the Up key will add one to the high alarm setting and subtract one
from the low alarm setting. Pressing the Down key will subtract one from the
high alarm setting and add one to the low alarm setting. In other words, the
Up Arrow widens the alarm band and the Down Arrow tightens the alarm
band. This feature will not set the alarm levels above 100% or below 18%.
4. Once the desired alarm settings are attained, press the Un-lock key to
save the settings and return to normal operation mode. If 30 seconds elapse
without a key press by the user, the device will automatically save the new
alarm settings and return to normal operation mode.
2.4 Basic Operation
To check the oxygen concentration of the delivered gas:
1. Ensure the sensor is connected to the flow diverter and inserted completely
in the sensor port behind the flow meter.
2. Set the oxygen blender control knob to the desired oxygen setting.
3. Using the ON/OFF key , make sure the unit is in the power on mode.
4. Allow the oxygen reading to stabilize.
5. Adjust the flow meter to the desired flow rate. Read the flow rate at the
center of the float ball.
CAUTION: The outlets of this device are capable of delivering pressure as high as the
inlet pressure. Ensure that the devices that carry the gas from the blender to the patient
prevent excessive pressure to the patient.
2.5 Alarm Conditions and Priorities
In the event of either a low alarm or high alarm condition, the corresponding
LED will begin to flash, accompanied by the audio buzzer. Pressing the SILENT
key will deactivate the buzzer but the LED and the alarm value digits on the
display will continue to flash until the alarm condition has been rectified. If the
Alarm
Alarm Priority
Low Alarm
LED
(add symbol)
High Alarm
LED
(add symbol)
Audible Alarm
Audible Alarm
Repeat
Line Power Plugged In
Line Power Unplugged
External DC Power Supply
voltage out of range
Battery Voltage too low for
device to operate (E04)
Oxygen level above the high
oxygen alarm setting
Oxygen level below the low
oxygen alarm setting
Oxygen level below the low
oxygen alarm setting and
lower than 18%
Informational
Informational
Informational
Medium
Medium
Medium
High
Off
Off
Single Yellow
Pulse
Single Yellow
Pulse
Solid Yellow
Solid Yellow
Pulsing Yellow
Pulsing Yellow
Pulsing Yellow
Off
Off
Off
Pulsing Yellow
Pulsing Red
2 Pulses
2 Pulses
2 Pulses
3 Pulses
3 Pulses
3 Pulses
5+5 Pulses
No Repeat
No Repeat
Every 15 Sec.
Every 15 Sec.
Every 25 Sec.
Every 25 Sec.
Every 25 Sec.
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