
226
6
Servo
…
User´s manual
US edition
Order No: 66 00 261
10
0
Infant
Adult
Universal
Options
Problem
blem
(Display message)
Possible cause
ossible cause
Remedy
Apnea
Preset or default alarm limit
exceeded.
Time between two consecutive
inspiratory efforts exceeds the set
piratory efforts exceeds the set
alarm limit.
Check patient and breathing
g
system.
Check ventilator settings.
Backup ventilation
tilation
An apnea has caused the ventilator
used the ventilator
to switch from support mode to
backup ventilation mode.
Check patient. Select ventilator
mode.
Check ventilator settings. If the
f the
problem still remains contact a
service technician.
Check tubing
Problems with patient tubing or
expiratory pressure transducer.
y pressure transducer.
Disconnected pressure transducer
(expiratory or inspiratory). Blocked
pressure transducer (expiratory or
inspiratory). Water in expiratory limb
Water in expiratory limb
of ventilator. Wet bacteria filter.
Clogged bacteria filter. Excessive
d bacteria filter. Excessive
leakage.
Refer to service. Remove water
from tubing and check humidifier
ubing and check humidifier
settings, i.e. relative humidity.
Check heater wires in humidifier (if
wires in humidifier (if
present). Check connections of
tubing and expiratory cassette.
g and expiratory cassette.
Expiratory cassette
ratory cassette
disconnected
The Expiratory cassette is
disconnected or not connected
properly.
Connect the Expiratory cassette.
Replace the Expiratory cassette.
Perform a Pre-use check if a new
new
Expiratory cassette is inserted.
Expiratory Minute
Volume: High
lume: High
Preset or default alarm limit
exceeded.
Increased patient activity. Ventilator
vity. Ventilator
self-triggering (auto cycling).
Improper alarm limit setting.
Check patient and breathing
system.
Check trigger sensitivity setting.
Check alarm limit settings.
Expiratory Minute
Minute
Volume: Low
(
See note on page 229.)
Preset or default alarm limit
exceeded.
xceeded.
Note: This alarm also works as a
patient disconnect alarm.
Low spontaneous patient breathing
breathing
activity. Leakage around the cuff.
Leakage in the patient breathing
system. Improper alarm setting.
m. Improper alarm setting.
Check patient and breathing
system.
Check cuff pressure.
uff pressure.
Check patient breathing system
(perform leakage test if necessary).
leakage test if necessary).
Check pause time and graphics to
o
verify. Consider increased
ventilatory support for the patient.
Gas supply pressures:
y pressures:
Low
Air and O
O
2
supply is below 2.0 kPa x
100.
Both air and O
2
gas supply
disconnected.
Check the gas connections.
k the gas connections.
High continuous
pressure
Constantly high airway pressure for
more than 15 seconds (PEEP + 15
15 seconds (PEEP + 15
cmH
2
O).
Check patient and breathing
heck patient and breathing
system.
Check ventilator settings. If the
or settings. If the
problem remains, contact a service
technician.
High priority alarms
igh priority alarms
gh priority alarms
h priority alarms
priority alarms
priority alarms
riority alarms
iority alarms
ority alarms
rity alarms
ity alarms
ty alarms
y alarms
alarms
alarms
larms
arms
rms
ms
s