6 Hygiene treatment and servicing
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3. Wash filter under running water.
4. Allow filter to dry.
5. Replace filter in the holder.
6. Close exhalation module compartment.
6.2 Function check
Carry out a function check before using the device for the
first time, after every hygiene treatment, and after every
repair, but at least every 6 months.
1. Check device for external damage.
2. Check connectors, cables, and circuit for external
damage.
3. Check accessories such as the breathing system filter,
external batteries, and SpO
2
sensor for external damage.
Follow the associated instructions for use.
4. Check that components are connected to the device
correctly
(see “4.2 Connecting circuit”, page 11)
5. Connect the device to the power supply
Setting up and connecting device”, page 11)
6. Switch on device
(see “4.4 Switching on device”, page
.
The device automatically performs a few function tests
on the sensor system. If the device is fully functional, the
start screen is displayed and the device switches to
standby.
7. Perform a circuit test (see:
System
>
Circuit test
menu).
If the circuit test is failed, proceed according to the
troubleshooting table
8. Seal the end of the circuit and start ventilation. A brief
acoustic alarm must be audible on starting. The device
automatically performs a few function tests.
The alarm key lights up yellow and red.
9. Compare the pressure shown in the display with the
prescribed pressure.
10. Check the functionality of the batteries:
• Disconnect the device from the power supply.
The first external battery (if present) takes over energy
supply (watch what is shown in display).
• Disconnect the first external battery from the device.
The second external battery (if present) takes over
energy supply.
• Disconnect the second external battery from the
device.
The internal battery takes over energy supply.
11. Check the charging state of the batteries
Views menu in the Patient menu”, page 15)
If the batteries are not charged, leave the device
connected to the power supply to charge batteries.
12. If a FiO
2
cell is in use: Perform FiO
2
System menu in the Patient menu”, page 16)
.
13. If one of the items is not OK or pressure deviates by >
1 cmH
2
O: Do not use device and contact your specialist
dealer.
6.3 Checking alarms
6.3.1 Non-specialist user (patient or
relatives)
ALARM
ID NO.
REQUIREMENT
TEST
Leakage high
(High level of
leakage)
459
On a single circuit with valve: Alarm limit
is set to a value <150 l/m
With leakage circuit:
Alarm limit is set to a value <60 l/m
On a double circuit, 15 mm/22 mm:
Alarm limit is set to a value <60 l/m
On a double circuit, 10 mm: Alarm limit is
set to a value
≤ 35 l/min
Leave circuit open at patient connection.
Start ventilation.
Wait at least 30 seconds, more alarms may occur
during this period.
Pressure low
(Low airway
pressure, low
pressure on
inspiration)
457
Alarm limit is set to a
value
≥ 6 cmH
2
O
Leave circuit open at patient connection.
Start ventilation.
