Sentec LuMon, Service Manual, Page: 19 / 33

Troubleshooting
Service Manual for the LuMon™ System 19 of 33
4.2 Troubleshooting list
This section describes problems, possible causes and recommended actions for troubleshooting.
N
OTE
Concerning equipment, accessories, disposable and parts refer to section ‘warnings and cautions’ of the User’s Guide for the
LuMon™ System [1].
N
OTE
Shadings in the troubleshooting table reflect different levels of recommended actions, i.e. for the operator (dark grey), qualified
technicians (light grey) and SenTec Authorized LuMon™ Technicians (no shading), see 4.1 for details.
4.2.1 Troubleshooting EIT monitoring
If you suspect a problem with any individual measurement, read the User’s Guide for the LuMon™ System [1] and double-check
that you or the operator have set up the system correctly. In particular, verify proper setup and adequacy of the selected
Analysis
Mode
. To resolve the problem(s) that may be associated with a displayed status message, refer to section ‘status messages’ of the
User’s Guide for the LuMon™ System [1].
Table 4-1: Troubleshooting EIT monitoring
Problem Possible cause(s) Recommended action(s)
EIT0100
Inclination displayed on
GUI— inclination status icon
AND inclination image —
does not suit patient’s
inclination
DockingStation of SB not parallel to
sternum of the patient.
Position sensor is placed in the
Matchbox of the SBC.
Verify belt positioning and a snug fit of the belt on the skin [1]
section ‘checking the proper setup’.
Consider to adjust the routing of the SBC-cable or the
DockingStation.
Position sensor placed behind the
‘bear’ in the LMB not parallel to
sternum of the patient.
Verify belt positioning and a snug fit of the belt on the skin [1]
section ‘checking the proper setup’.
Consider to adjust the LuMon™ Belt to align the ‘bear’ with the
sternum of the patient. In such case the belt displacement
needs to be measured and entered to patient data on monitor,
again.
EIT0101
Rotation displayed on GUI —
Belt-connection/ Skin-
contact/ Rotation status icon
AND all images — does not
suit patient’s rotation.
DockingStation of SB not parallel to
sternum of the patient.
Position sensor placed in the Matchbox
of the SBC.
Verify belt positioning and a snug fit of the belt on the skin [1]
section ‘checking the proper setup’.
Consider to adjust the routing of the SBC-cable or the
DockingStation.
Position sensor placed behind the
‘bear’ in the LMB not placed close to
the midline of the patient.
Verify belt positioning and a snug fit of the belt on the skin [1]
section ‘checking the proper setup’.
Consider to adjust the LuMon™ Belt, positioning the ‘bear’ on
the sternum. In such case the belt displacement needs to be
measured and entered to patient data on monitor, again.
EIT0102
Status icon ‘ Belt Time’
displays ‘belt time elapsed’
SB/LMB has been used for longer than
the factory-preset duration a belt can
be used.
Remove and dispose of the old belt and obtain a new belt of
the same size to continue monitoring for the same patient.
EIT0103
Global Dynamic Image and
Plethysmogram fluttering
(Plethysmogram full of
irregular spikes).
Interference from other devices (e.g.
patient monitors, high-frequency
surgical equipment or devices emitting
strong electromagnetic fields).
In case of interferences from other devices – e.g. respiratory
rate measurement through ECG electrodes – try to place the
electrodes of the device as far from the belt as possible.
Note : Concerning interferences with or from other
devices refer to section
‘warnings and cautions’
of the
User’s Guide for the LuMon™ System [1].
If the interference cannot be eliminated Contact
a SenTec
Authorized LuMon™ Technician, your local SenTec EIT
representative or SenTec AG.
EIT0104
Indices not reflecting patient
situation - over or
underestimated
Belt applied too far caudally. If applied
too far caudally the measurements may
be influenced by the diaphragm.
Verify belt positioning and a snug fit of the belt on the skin [1]
section ‘checking the proper setup’.
Consider to adjust the belt.
Belt applied too far cranially.
EIT0105
Global Dynamic image is not
inside the Lung ROIs.
Patient and/or belt parameter not set
properly.
Thorax and Lung ROIs models do not
correspond to the patient constitution
and consequently causing either over-
or underestimated measurements.
If necessary, adjust the respective entries in the ‘patient & belt’
area of ScoutView. Enter actual (not lean or ideal) body weight
[1]
section ‘belt application and initiating monitoring’.
EIT0106
LuFuView’s indices and
images not visible
BB
Analysis Mode selected and breaths
not detected.
Black vertical lines displaying the end of
expiration and the end of inspiration
are not visible on
Plethysmogram.
Verify the adequacy of the selected
Analysis Mode
[1] section
‘checking the adequacy of the selected Analysis Mode’.
Consider to change Analysis Mode.