Heyer iTernIS ADV, Operator'S Manual

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Appendices | iTernIS ADV
A. iv
A.I.3 | High Priority Alarms
Table A-3 High Priority Alarms
ALARM Possible Causes Suggested Actions
Continuous high
pressure
Obstruction in the pa-
tient circuit expiratory
line and/or expiratory
set
Verify that there are no obstruc-
tions in the patient circuit (inclu-
ding the expiratory set). Free the
obstructions, if any. Otherwise,
perform a reset to zero of the
pressure sensors ( [Ctrl] + [Ctrl] ).
If the condition persists, remove
the service ventilator, replace
with an alternative ventilation
system and contact the authori-
zed technical service.
High pressure
Changes in the
patient's breathing
mechanics. Obstruc-
tion of the patient cir-
cuit. Low alarm limit.
Examine the patient. Verify the
limit of the configured alarm; mo -
dify this if it is too low. Look for
obstructions in the patient circuit.
Minimum pressure
Changes in the patient's
breathing mechanics.
Leaks in the circuit.
High alarm limit.
Examine the patient. Verify the li-
mit of the configured alarm; modi -
fy this if it is too high. Look for pos-
sible leaks in the patient circuit.
Low air and oxy-
gen pressure
Gas panel locks clo-
sed. Supply hoses
obstructed. Exhausted
O
2
tube or closed re-
gulator. Air compres-
sor out of service.
Check all listed items as possible
causes.
Low oxygen (or
air) pressure
The possible causes
of the preceding event,
for gas with low supply
pressure.
Follow the suggested recom-
mendations for the aforementio-
ned event.
Dead battery
Prolonged internal
battery operation
Plug the electric power cable to
an adequate network distribution.
If the battery does not recharge,
it may have to be changed. In
that case, try an alternative ven-
tilation system and contact the
authorized technical service.
Disconnection
Disconnected patient
circuit hoses or discon-
nected elements of in-
tubation.
Check all junction points between
the hoses, the ventilator, and the
patient circuit accessories. Verify
the status and position of the intu-
bation element used.
Oxygen concentra-
tion less than 18%
Incorrect gas supply.
Disconnected or de-
pleted O
2
sensor.
Verify that the O
2
source supplies
adequate gas. Check the sensor
connections. After having identi-
fied and solved the problem, re -
calibrate the O
2
sensor.
Maximum and
minimum ETCO
2
Incorrectly establis-
hed alarm limits. Sen-
sor adapter in poor
condition. Changes in
the patient's breathing
mechanics.
Check to make sure the sensor
adapter is in optimal operating
condition (free of dirt). Check
conditions of the alarm limits and
of the patient mechanics.