User's Manual

22-24
Clinical
Situation
Possible Cause Solution
Alarm
Sounds
100% O2 SPAN
FAILED - Check 100%
O
2
gas supply, Check
for leaks
■ Sampled gas supply does not
have 100% O
2
present when
compared to room air O
2.
■ Verify the O
2
supply. Allow the
analyzer to warm up for at least
30-minutes before attempting a
100% O
2
span.
■ Yes
■ Air leak in external sample circuit. ■ Check water trap, gas analyzer
filter, and sample lines for air
leaks. Replace all leaking
components.
■ Yes
■ Air leak in internal sample circuit. ■ Perform a unit leak test. Service
may be required.
■ Yes
■ External/internal pressures may
be out of operating range or
measurement of the pressures
has failed.
■ Check that the cell pressure in
SERVICE CAL MODE is between
525-825 mmHg. If the cell
pressure is greater than the
barometric pressure, external
sample circuit is over pressured,
adjust circuit.
■ Yes
■ O
2
cell linearity error. ■ Contact your Biomed or your
Spacelabs Medical service
representative.
■ Yes
■ O
2
concentration may be more
than 23% or less than 19% in
vicinity of the analyzer.
■ Check the room air around the
analyzer for high O
2
concentrations. Successful
completion of O
2
span is not
possible under this condition.
■ Yes
■ Repeat 100% O2 SPAN (refer to
To span calibrate O2 sensor with
100% O2 on page 22-20). Contact
a qualified service person if the
span fails again after the above
checks.
100% O2 SPAN
FAILED -
O2 cell replacement
required
■ O
2
cell output is below acceptable
levels, O
2
values are disabled.
■ Contact your Biomed or your
Spacelabs Medical service
representative.
■ Yes
100% O2 SPAN
REQUIRED
■ Initial 100% O
2
CAL required. ■ Perform 100% O
2
Span. ■ Yes
■ CHECK O2 SENSOR determined
need for 100% O
2
Span to restore
specified O
2
accuracy.
■ Perform 100% O
2
Span. ■ Yes
O2 CELL
REPLACEMENT
REQUIRED
■ Previous O
2
span determined that
O
2
cell has aged to the point of
needing replacement.
■ Contact your Biomed or your
Spacelabs Medical service
representative.
■ Yes