15
1. When troubleshooting multiple alarms, they will alternate. Alarms and indicators depend
on the highest priority. All of the above alarms are technical alarms, within 3 minutes after
power on, oxygen concentration less than 82% will not alarm.
2. When troubleshooting alarms, identify failure type from LCD and contact NHT
immediately.
3. Alarm system recommended test interval: 18 months.
Note:
Chapter 4: Alerts.
LCD Indication
Sl.
No.
1.
System
High
Temp
Temprature
rise abnormal
Red LED illuminates
continuously and
the Audible Alarms
is beeping quickly.
The device is not
operating.
Block the air
outlet of the
oxygen
concentrator,
and alarm
aftera period
of time.
Less than
1 minute.
High
Medium
2.
Water
Level
Flow
Output flow
is too low
The sound level
is 60~80dB
The sound level
is60~80dB
Yellow LED illuminates
intermittent
continuously and the
Audible Alarm is
sounding intermittently.
Adjust the
oxygen
flow-meter to
the minimum
level until
alarm stops.
Less than
1 minute.
Loudspeaker
Alarm
Visualization
