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Document No. 715-7000
Revision E
Page 55 of 63
COMMON PROBLEMS ENCOUNTERED
SYMPTOM
CAUSE
ACTION
Sensors are slow
to calibrate or will
not calibrate
1. Possible system leaks
2. Sensors may need
replacing. Please refer to
the section on
Sensors
for
sensor life.
3. Calibration gas may have
expired.
1. Ensure
O
2
analyzer reads 100%
oxygen during O
2
sampling and 0%
during NO or NO
2
cal. gas sampling.
If not, check for external leaks.
Send to Biomedical engineering for
internal system leak check.
2. Have Biomedical engineering
change sensors.
3. Check “Analysis date” on cal. gas
label.
NO / NO
2
values
drift during
calibration, will not
hold cal. values
1. Sensors may need
replacing. Please refer to
the section on
Sensors
for
sensor life.
2. Sensors may need
additional time to be
biased
1. Have Biomedical Engineering
replace sensor(s).
2. Allow 24 - 48 hours for sensors to
bias. Calibrate as per
SECTION V
.
NO / NO
2
values
drift during clinical
use
1. Sensors may need
replacing. Please refer to
the section on
Sensors
for
sensor life.
2. Sensors may need
additional time to be
biased.
3. Incomplete gas mixing in
your patient circuit may be
occurring.
1. Have Biomedical Engineering
replace sensor(s).
2. Allow 24 - 48 hours for sensors to
bias. Calibrate as per
SECTION V
.
3. Refer
to
SECTION VI
, Nitric Oxide
Delivery Techniques.
Screen remains
blank when unit is
powered up.
Pump will not run
when unit is
powered on.
1. Internal battery has
become discharged.
2. Internal battery requires
replacement.
1. Plug “Universal Power Supply” into
the AeroNOx
and allow to charge
for at least 30 min.
2. Have Biomedical Engineering
replace the battery.
“AERONOX
” is
displayed even
when the unit is
powered off
1. Battery is not fully
charged.
2. Internal battery requires
replacement.
1. Plug “Universal Power Supply” into
the AeroNOx
and allow to charge
for at least 30 min.
2. Have Biomedical Engineering
replace the battery.
CAUTION!
Disconnect the battery when the unit is not in use for extended periods of time or if the
system must remain unplugged for extended periods of time.