• First, the gauge information for both batteries (or one battery if only one is installed), will
be shown
• Next, the gauge for just the battery in the first slot
charge cycles on the battery in the first slot
• Finally, the gauge and charge cycles for the battery in the second slot is shown
If there is no battery in one of the slots, then a question mark will be shown instead of the
fuel gauge and number of cycles. After the fifth push of the battery button, the display
will alternate back to the main screen showing the current flow setting. It will also auto-
matically exit the battery status menu and go back to the main flow setting display after
approximately 15 seconds of no buttons being pushed.
7 . 7 . RESPONDING TO ALARMS
CAUTION: If you are unable to hear or see alarms, do not have normal tactile sensitivity,
or cannot communicate discomfort, consult your clinician before using this device.
Pressing the alarm mute button
mute period depends on the severity of the alarm (see Chapter 9 - Alarm Indicators). Dur-
ing this mute period, the mute LED will remain illuminated, indicating the alarm buzzer is
muted. Push the mute button again to un-mute alarms. Pressing the mute button when
there is no active alarm will mute any future medium or low priority alarms for eight hours.
See Chapter 9 - Alarm Indicators and Chapter 10 - Troubleshooting for additional informa-
tion on alarms.
IMPORTANT: The alarm system is tested during the startup sequence. You should see
all alarm lights briefly turn on and the audible alarm indicator chirp. If alarms are sus-
pected of mis-operating, contact your distributor for verification that alarms are working
correctly.
7 .8 . TURNING OFF
CAUTION: Always turn off this device when not in use.
To turn the Zen-O™ Portable Oxygen Concentrator off, press and hold the power button.
The device will chirp and the screen will display a shutdown message
approximately five seconds, then go into low-power mode.
IMPORTANT: Do not disconnect the AC power supply and remove the battery at the
same time while the unit is running. Always use the power button to turn the device off.
Wait until the device has completely shut down before disconnecting from power and
removing the battery.
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at any time will silence the buzzer. The length of the
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