Lowenstein Medical LM150TD, Instructions For Use Manual, Page: 20 / 40

6 Hygiene treatment and servicing
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EN
LM
T
68
65
1c
0
2/
20
22
13. If one of the items is not OK or pressure deviates by > 1
hPa: Do not use device and contact your specialist dealer.
14. If required: Check alarms (see “6.3 Checking alarms”,
page 20) .
6.3 Checking alarms
To check alarm functionality, simulate the kind of user error
that triggers the particular alarm.
6.3.1 Non-specialist user
6.4 Servicing
The device is designed for a service life of 10 years.
If the device is used beyond this period, it needs checking by
the manufacturer or by the specialist dealer.
For Germany: In accordance with §11 Medizinprodukte-
Betreiberverordnung [German law governing the owners/
operators of medical devices], the device must be subjected
to a Technical Safety Check [Sicherheitstechnische Kontrolle
(STK)] every 2 years. Country-specific requirements apply to
all other countries.
The internal and the external battery must be replaced every
4 years or after 500 cycles.
The membrane of the nonreturn valve must be replaced
every 4 years.
The blower must be replaced after an operating time of
35,000 h.
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 inspiration tube 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 hPa
Leave inspiration tube open at patient connection.
Start ventilation.
Exhalation blocked
(Obstruction)
757
Single circuit with valve is connected.
Alternatively
Double circuit is connected.
Connect test lung. Start ventilation.
On a single circuit with valve: Seal exhalation opening
of patient valve.
On a double circuit: Take the expiration tube off the
device inlet port and seal the connection on the tube.
Tidal volume low
(Low volume
exhaled) 450 Double circuit: Alarm limit is set.
Start ventilation.
Take expiration tube off device inlet port.
Wait 3 breaths.
FiO
2
low
(Oxygen
concentration) 494
FiO
2
cell is fitted and activated.
Alarm limit is set.
No external oxygen supply connected. Start ventilation.
Battery capacity
low
551
Device is not connected to the power
supply.
Start ventilation until the internal battery has
15 minutes’ life remaining before it discharges
completely.
Battery capacity
critical
550
Device is not connected to the power
supply.
Start ventilation until the internal battery has
5 minutes’ life remaining before it discharges
completely.
Energy supply via
internal battery
584 None
Disconnect power cord from device. Disconnect the
cable for the external batteries from the device.