Chapter
7
Alarms
Testing the functionality of the alarm system
48
09382-03 - 06.05.2021 - LM 2000
Testing the functionality of the alarm system
The use of ventilation tubes and accessories not approved by Löwenstein
Medical may impair performance or endanger safety.
▪
For correct operation, the LM 2000 may only be used with specific
ventilation tubes and accessories from Löwenstein Medical.
WARNING
The functions of the alarm system can be tested at
any time if the LM 2000 is in operation and
humidification has not been stopped. Löwenstein
Medical recommends that this test is carried out
before the LM 2000 is used on the patient.
Install the humidifier and all accessories correctly to
test that the alarm system is working properly.
Perform the test points in the order described below
to obtain correct results. Before any action, wait until
the previous alarm is cleared.
Do not use the device on a patient if the following
alarms are not shown on the display. In this case
contact the technical customer service of Löwenstein
Medical.
Table 10: Testing the functionality of the alarm system
Test sequence
Alarm codes
shown on
the display
State triggering the
alarm
Alarm system
delay
Steps to clear the
alarm
Start humidifier without
inserted water chamber
E0013
The temperature of
the heating plate
rises too quickly
< 5 minutes
Insert water
chamber correctly
and switch off
humidifier
Fill the water chamber
with water above the
black line for the
maximum fill level
E0003
The level of the water
is above the
maximum fill level
< 10 minutes Remove as much
water as needed to
reach the correct fill
level
Remove the blue plug
from the humidifier’s
temperature sensor
cable
E0007
LM 2000 does not
detect the connection
of the temperature
sensors
< 10 seconds Connect the
temperature sensor
cable
Remove the red plug
from the humidifier’s
heating cable
E0011
LM2000 does not
detect the connection
of the heating cable
< 10 seconds Connect the heating
cable
Connect the expiration
tube and then
electrically disconnect
the expiration tube from
the heating cable (only
applies when using an
expiration heating
circuit).
E0020
LM 2000 does not
detect the connection
to the expiration
circuit (only applies
when using an
expiration heating
circuit).
< 5 seconds
Connect the
expiration circuit
