3
Alarms
Power Fail
If the electrical power to the ventilator is interrupted, an audible alarm will
sound. This alarm will run for 5 minutes unless cancelled with the mute button. Once
cancelled the power fail alarm will not re-activate.
Low Internal Battery
When running on its internal battery, the alarm will operate when the
battery is almost depleted
The user cannot replace this battery. Refer to qualified technical personnel for battery
replacement.
Low External Battery
When running on an external battery, the alarm will operate when the
battery is almost depleted. Machines fitted with an internal battery will automatically switch to
internal battery power without alarming.
Low Pressure
A pre-set low pressure alarm is provided. If the control pressure falls to
below 50% of the set IPAP level for 10 seconds an audible and visual alarm will operate.
High Pressure
A pre-set high-pressure alarm is provided. If the pressure rises above 120%
of the working pressure, an audible and visual alarm will operate after a 2 second delay.
Breathing Circuit Disconnect
A disconnection alarm is provided as a back up to the high
flow alarm. If the patients flow waveform indicates that a significant leak maybe present
in the breathing circuit an audible and visual alarm will operate. The sensitivity of the
alarm is adjustable
.
For an explanation of sensitivity settings see alarm settings, disconnection sensitivity
(page 25).
Breathing Circuit Malfunction
This alarm warns of a malfunction of the exhale valve in
the IPPV mode circuit.
High Flow alarm
An adjustable alarm is provided to warn of excess inspiratory flow. This
is activated when the inspiratory flow exceeds the set high flow alarm level for 5
seconds. An audible and visual alarm will operate.
Low Flow alarm
An adjustable alarm is provided to warn of insufficient inspiratory flow.
This is activated when the inspiratory flow fails to achieve the set low flow alarm level
for 10 seconds. An audible and visual alarm will operate.
Apnoea Alarm
An adjustable Apnoea alarm is provided. If an apnoea is detected an audible
alarm will sound with a visual indication on screen.
Max Breath Rate
An adjustable maximum breath rate alarm is provided. If the max
breath rate is exceeded an audible and visual alarm will operate.
Fault
The alarm may also be operated by an internal fault. In this case the fault will be
displayed on screen.
These alarms may be muted for approximately 2 minutes to allow for setting up of the
ventilator.
Low Internal Alarm/Memory Battery
An intermittent alarm (short beep) with no onscreen
message indicates a depleted mains fail alarm battery. If the ventilator has been stored for
more than a few weeks the internal battery will self discharge. In this case the alarm will stop
after the battery has recharged.
The user cannot replace this battery. Refer to qualified technical personnel if the alarm
operates when the ventilator is in daily use.