ZOLL 731 Series Operator's Manual page 83

Fresh Gas Intake Fault/Failure: Obstructions of the Fresh Gas/Emergency Air Intake.
•
These obstructions can be the result of mechanical blockage of the intake (such as a plastic
bag) or by using an inappropriate filter, when the internal or external filters become dirty or
clogged, or when the low pressure oxygen reservoir is used. The pressure drop across the
intake is continuously monitored. A High Priority alarm occurs when the obstruction
prevents the compressor from delivering a breath that meets the ventilator settings and there
is no 55 psig oxygen supply to operate the O
occurs when the obstruction prevents the compressor from delivering a breath that meets the
ventilator settings and there is a 55 psig oxygen supply to operate the O
Changing FIO
will occur when the intake is restricted, but the compressor can still deliver a breath that
meets the ventilator settings.
Power Fault/Failure: Power management and the supply of power from external sources
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and the internal rechargable battery. High Priority alarms alert the operator to power failures
where there is no backup power alternative or failures of the internal power management
system. The alarm can only be silenced by turning the ventilator off. Low Priority alarms are
associated with faults or failures that occur where a backup power source is available either
by using the internal battery or through use of the external power source. Pressing the
MUTE/CANCEL button cancels the audible alarm while a persistent message remains.
Note:
Low Battery Power: Power remaining in the internal battery and its ability to continue
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ventilator operation. High Priority alarms signal that the battery no longer has the power to
continue ventilator operation and there is no external source detected. The alarm can only be
silenced by turning the ventilator off. Medium Priority alarms alert the operator that the unit
has approximately 5 minutes of operating time remaining. Pressing the MUTE/CANCEL
button mutes the audible alarm for 30 seconds. The Low Priority alarm occurs during
internal battery operation when the unit determines that there is approximately 30 minutes
of operating time remaining. Pressing the MUTE/CANCEL button cancels the audible
alarm, but the persistent message and yellow LED remain.
Missing Battery: Operating the unit without an internal battery or operation when the
•
ventilator is not able to detect the internal battery. The Low Priority alarm alerts the operator
that the device is operating on external power and that the unit does not have the ability to
automatically switch to internal battery power in the event of an external power failure.
Pressing the MUTE/CANCEL button cancels the audible alarm, but the persistent message
and yellow LED remain.
SPM Change: Occurs when the CPU does not recognize the smart pneumatic module
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(SPM). The failure is most often associated with a mix up during servicing where the
complete unit was not properly calibrated after a new SPM was installed. The alarm can
only be silenced by turning the ventilator off and sending it in for service.
Calibration Fault/Failure: Internal sensors that monitor and control breath delivery. High
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Priority alarms occur when there is a failure in one or more of the sensors that prevent the
unit from safely delivering breaths. Medium Priority faults occur when the sensors are not
able to establish an airway pressure baseline. While the unit attempts to recalibrate the
sensor, the audible and visible alarms sound. Pressing the MUTE/CANCEL button mutes
the alarm for 30 seconds.
Exhalation System Fault/Failure: The control of the exhalation valve and airway pressure.
•
High Priority alarms occur when the airway pressure exceeds the Pressure Limit value or 40
cm H
1.5 seconds. Medium Priority alarms occur when the end expiratory pressure does not reach
the baseline pressure before the start of the next breath. Resolution of this fault is typically
associated with problems causing restrictions to the exhalation valve. Pressing the
MUTE/CANCEL button mutes the audible alarm for 30 seconds.
906-0731-01 Rev. J
to 100% will downgrade this alarm to Low Priority. A Low Priority alarm
2
The unit has the ability to automatically disconnect itself from external power
sources that are providing power outside of the safe power range. When the unit
detects that the external power supply is within range, it automatically reconnects
to the external source to power operation and recharging of the internal battery.
O for more than 5 seconds, or when the airway pressure is > 75 cm H
2
ZOLL Portable Critical Care Ventilator
Valve as a backup. A Medium Priority alarm
2
Valve as a backup.
2
O for more than
2
4-5