Trouble Shooting Checklist - Salter Labs PRO2 check Elite Operation Manual

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 USP oxygen (≥
99.0%).
Display reads between
98% to 102% (but not
99.9%) on a source of
USP 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 cali-
brated.
Display shows "-U-".

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 concentra-
tor's output of argon.
Unit requires quick cali-
bration.
Unit requires full calibra-
tion.
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 USP oxygen
(≥ 99.0%) push and cot-
tinue to hold down "pure
O2/calibrate" button to
temporarily remove argon
correction from
With unit still con- nected
to source of USP oxy-
gen (≥ 99.0%) push and
hold down "pure O2/
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 /cal-
ibrate" button and restart
calibration process.
Perform "Full Calibra-
tion Procedure" outlined
in User Manual.
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