GCE Zen-O RS-00500, User Manual, Page: 27 / 216

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4. To disable the Airplane Mode: Press and hold both Mute and Minus buttons
for 4 seconds.
IMPORTANT: Activating or de-activating the Airplane mode does not aff ect the normal
operating performance of your device, continue to use your device as normal.
9. ALARM INDICATORS
If the Zen-O™ Portable Oxygen Concentrator detects an alarm condition, it will indicate
the alarm visually and audibly within 10 seconds. There are four levels of alarms: critical
high priority, high priority, medium priority, and low priority.
Each is indicated diff erently by the backlit display; yellow, and red LEDs; and buzzer, as
indicated below. In each case, the alarm message and power status will override the cur-
rent display.
IMPORTANT: All alarm conditions and parameters are factory preset; conditions and
parameters cannot be changed or adjusted by the user.
IMPORTANT: The alarm system is tested during the startup sequence. You should see
all alarm lights briefl y turn on and the audible alarm indicator chirp.
ALARM STATUS AUDIBLE TONE VISUAL INDICATOR MUTE TIME
Critical high
priority
Ten beeps per burst, a burst
repeats every 3 seconds.
Solid red LED and device is
automatically disabled
20 minutes
High priority
Ten beeps per burst, a burst
repeats every 3 seconds.
Flashing red LED 20 minutes
Medium priority
Three beeps per burst, burst
repeats every 8 seconds
Flashing yellow LED 8 hours
Low priority Three beeps per burst, burst
repeats every 10 minutes
Solid yellow LED 24 hours
IMPORTANT: If two alarm conditions exist at the same time, the highest priority alarm is
indicated. If two or more alarm conditions of equal priority exist at the same time, the
most recent one will be displayed.
IMPORTANT: The most recent alarms indicated by the device are logged for reference
by service personnel. This log is maintained even if the device is powered down or if
power is lost for any other reason.