TROUBLE SHOOTING CHECKLIST (CONTINUED)
Complaint Probable
Cause
Suggested
Corrective Action
Display shows
"err"
during
calibration
Calibration was
performed incorrectly
or wrong calibration
gas was used.
Ensure U.S.P.
oxygen (> 99.0%) is
being used and re-
perform procedure
according to
directions in the
Operation Manual.
Display shows
"err"
during use
Unit has made a
reading outside
normal ranges.
Check calibration.
Make sure gas
being measured is
from oxygen
concentrator.
"LO BATT"
appears in display
screen when unit is
turned on
Battery is low.
Change battery.
Display shows
"err"
or a reading
other than 100% ±
2% after full
calibration
Unit may have been
used to check a
concentrator with a
humidifier bottle in
line or water has
gotten inside of unit.
Call Responsive
Respiratory
Customer Service
Department at
(866) 333-4030 for
authorization to
return unit for repair.
14
Ultrasonic Oxygen Indicator
TROUBLE SHOOTING CHECKLIST
13
Complaint Probable
Cause
Suggested
Corrective Action
Display is
blank
when unit is turned
on.
Bad batteries.
Corroded battery
terminals.
Replace batteries.
Clean battery terminals.
When unit is turned
on display flashes
"PRO O2 @ CAL"
and then turns off.
Unit requires
calibration.
Perform "Full
Calibration Procedure"
outlined in Operation
Manual.
Display reads
91.8%
on a source of
U.S.P. oxygen (>
99.0%).
Unit is operating in
mode to check
concentrators and is
adjusting for
concentrator's output
of argon.
With unit still connected to
source of U.S.P. oxygen
(> 99.0%) push and
Ucontinue to hold downU
“pure O
B
2
B
/calibrate”
button to temporarily
remove argon correction
from unit's software.
Display reads
between
98% to 102%
(but
not 99.9%) on a
source of U.S.P.
oxygen
(> 99.0%) with
button held down.
Unit requires quick
calibration.
With unit still connected
to source of U.S.P.
oxygen (> 99.0%) push
and hold down
“pure
O
B
2
B
/ calibrate”
button
until display reads 99.9%
- 101 (approximately 20
seconds). The unit is then
recalibrated.
Unit is out of 98% to
102% range after
quick calibration.
Unit requires full
calibration.
Perform "Full
Calibration Procedure"
outlined in User Manual.
"---"
appears on
display while unit is
being calibrated.
Incomplete
calibration.
Release the
"pure
O
2
/calibrate"
button and
restart calibration
process.
Display shows
"-U-"
.
Indicates an out of
range reading.
Perform "Full Calibration
Procedure" outlined in
User Manual.
Ultrasonic Oxygen Indicator
