Remedy if test failsDescriptionTest
• Check that the connected gas supply
pressure (air and O
2
) is within the
specified range.
• Replace the O
2
cell.
• Replace gas modules (air and/or O
2
).
Calibrates and checks the O
2
cell /
sensor at 21% O
2
and 100% O
2.
Checks if the O
2
cell is worn out.
Because different gas mixtures are
required for this test, it will not be
performed if one gas is missing.
O
2
cell / sensor test
• Check that the connected gas supply
pressure (air and O
2
) is within the
specified range.
• Check that the cassette is correctly
seated in the cassette compartment.
Checks the inspiratory flow transducers.
Calibrates and checks the expiratory flow
transducer.
Flow transducer
test
Check that the total remaining time for
the connected battery modules are at
least 10 minutes. If not, replace the
discharged battery with a fully charged
battery and repeat the test.
Tests switching to battery power when
AC power is lost and back to AC power
when it is restored.
Battery switch test
If the internal leakage test has passed,
the leakage is located in the patient
circuit. Check for leakage or replace the
patient circuit.
Checks the patient circuit leakage,
compliance and resistance, with patient
tubing connected, using the inspiratory
and expiratory pressure transducers.
Allowed leakage: 80 ml/min at 50 cmH
2
O.
Will allow the system to calculate a
compensation for circuit compliance (if
the leakage requirements are met).
Checks the patient circuit resistance,
with patient tubing connected, using the
inspiratory and expiratory pressure
transducers.
For ranges and accuracies, see chapter
Technical data on page 150.
Patient circuit test
Refer to service technician.Checks that no Technical error alarms
are active during the Pre-use check
Alarm state test
• Check that the cable is connected to
the external system.
• Refer to service technician.
Checks that the alarm activation
functions correctly.
Alarm output
connection
SERVO-s VENTILATOR SYSTEM V8.0, User's Manual
111
| Operation overview |
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