Alarm indicators – Delphi DL-00183 User Manual
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DL-00096 Rev. 7
If	the	Portable	Oxygen	Concentrator	detects	an	alarm	condition,	it	will	indi-
cate	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	differently	by	the	backlit	display;	green,	yellow,	and	red	
LEDs;	and	buzzer,	as	indicated	below.	In	each	case,	the	alarm	message	and	
power	status	will	override	the	current	display.
Note: All alarm conditions and parameters are factory preset; conditions and parameters cannot be 
changed or adjusted by the user.
Alarm Status
Critical	high	 
priority 
High priority
Medium	priority 
 
Low	priority	
 
Audible Tone
Ten beeps per burst, burst 
repeats	every	3	seconds 
Ten beeps per burst, burst 
repeats	every	3	seconds
Three beeps per burst, 
burst	repeats	every	8	 
seconds 
Three beeps per burst, 
burst	repeats	every	 
10	minutes
Visual Indicator
Solid	red	LED	 
(and	device	shuts	 
off	automatically)
Flashing	red	LED 
Flashing	yellow	LED 
 
Solid yellow LED
Note: 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.
Note: 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.
Note: If the mute key is pressed prior to an alarm condition (for example, to mute the device in a 
movie theater), critical high priority and high priority alarms will override the mute function; medium 
and low priority alarms will be muted for eight hours from the time the key was pressed. Press the 
mute key off to display the last highest priority alarm. Press the mute key on again to reset the eight-
hour timer.
ALARMS
When	the	Portable	Oxygen	Concentrator	sounds	an	alarm,	a	corresponding	
message	will	be	displayed	on	the	screen.	Take	appropriate	action	as	directed	
in	the	charts	below.
Critical High Priority Alarms
Note: These alarms will disable the Portable Oxygen Concentrator immediately.
Alarm Message
Charge	Battery 
 
 
 
XX:	Service!* 
*Value: 01-20
Description
Battery	needs	charging. 
 
 
 
Service required.
Action
Recharge the battery 
pack by plugging in to 
power	supply.	Ensure	all	
connections are made 
securely.
Contact	Customer	
Service.
Alarm Indicators
Mute Time
20	minutes 
 
20 minutes
8	hours 
 
24 hours
DL-00096 rev 7.indd 16
6/1/2009 4:48:34 PM