Salter Labs PRO2 Check Operation Manual page 9

PRO
®
check
2
Ultrasonic Oxygen Indicator
Complaint
Display is blank when
unit is turned on.
When unit is turned on
display flashes
"PRO O2 @ CAL"
and then turns off.
Display reads 91.8% on
a source of U.S.P.
oxygen (> 99.0%).
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 is out of 98% to
102% range after quick
calibration.
"---" appears on display
while unit is being
calibrated.
Display shows "-U-".
13
Trouble Shooting Checklist
Probable Cause
Bad batteries.
Corroded battery
terminals.
Unit requires
calibration.
Unit is operating in
mode to check
concentrators and is
adjusting for
concentrator's output
of argon.
Unit requires quick
calibration.
Unit requires full
calibration.
Incomplete
calibration.
Indicates an out of
range reading.
Suggested
Corrective Action
Replace batteries.
Clean battery terminals.
Perform "Full
Calibration Procedure"
outlined in Operation
Manual.
With unit still connected to
source of U.S.P. oxygen (>
99.0%) push
and continue to hold
down "pure
O /calibrate" button to
2
temporarily remove argon
correction from unit's
With unit still connected to
source of U.S.P. oxygen (>
99.0%) push and hold
down "pure O /
2
calibrate" button until
display reads 99.9% - 101
(approximately 20
seconds). The unit is then
recalibrated.
Perform "Full
Calibration Procedure"
outlined in User Manual.
Release the "pure
O /calibrate" button
2
and restart calibration
process.
Perform "Full Calibration
Procedure" outlined in
User Manual.