7
Safety Functions
The electronic components continuously monitor the proper function of the sys-
tem. System malfunctions are indicated with audible warning signals, error mes-
sages, and/or the blocking of system functions. A table listing a summary of pos-
sible error and warning messages is provided in Error and Warning Messages
[} 54].
The message Maximum Pressure is displayed for 3 seconds once the intrauterine
pressure exceeds 150 mmHg. The maximum permissible pressure has now been
reached.
If the intrauterine pressure exceeds the intrauterine pressure setting by 10 mmHg
for longer than 5 seconds, the message Overpressure Open Stopcock is displayed
and three audible warning signals are emitted. The pressure reduction function is
activated and the roller wheel will move forward or backward a few times during
the pressure reduction process. If the pressure cannot be reduced, the roller wheel
stops, the message Overpressure Check Stopcock is displayed and five short con-
tinuous audible warning signals are emitted until the overpressure is reduced..
If the intrauterine pressure exceeds 200 mmHg for longer than 5 seconds, the
roller wheel stops, and the message Overpressure Check Stopcock is displayed. Five
short continuous audible warning signals are emitted until the pressure is reduced.
Once the intrauterine pressure falls below 200 mmHg, the audible warning signals
stop and the pump wheel resumes turning automatically.
If the inflow tube set is not inserted properly into the roller wheel, pressing the
Prime button results in a short audible warning signals and Check Tube Set Install-
ation is displayed. The roller wheel does not start to turn.
If a malfunction is detected in the pressure measurement electronics, Sensor Error
is displayed, and five short audible warning signals are emitted. The roller wheel
stops turning.
If the maximum permissible weight of the scale is exceeded (container scale), three
audible warning signals are emitted, and Scale Overloaded Check Scale is displayed.
The warning stops once the excess weight is removed from the scale.
The following messages are displayed when a container is removed from the scale
or a new fluid bag is added during operation of the system: Container Change,
Press Resume as long as the container change is ongoing accompanied by three
audible warning signals or Bag Change, Please Proceed for 5 seconds accompanied
by one audible warning signal.
If the last pre-set intrauterine pressure setting is greater than 80 mmHg, this value
is reset to the default value of 80 mmHg.
If the preset deficit threshold is reached and also for each additional deficit in-
crease by 100 ml above the threshold the message Deficit Limit Exceeded is dis-
played together with 3 audible warning signals. After 2 seconds this message is re-
placed by the continuous message Deficit Limit Reached accompanied by three
audible warning signals again.
If the deficit rate exceeds 300 ml/min, 3 audible warning signals are emitted, and
the message High Fluid Loss Check Leakage is displayed. If no obvious source of
high fluid loss can be identified, an assessment of potential cervical or uterine per-
foration should be made.
Some components of the system will be observed during operating and at the star-
tup sequence. Five short audible warning signals are emitted and a message "Com-
ponent" Error is displayed. Please refer to Error and Warning Messages [} 54] for
details about components linked to this error. It is possible that errors can occur in
the startup sequence prior to the enabling of the pump display. In this situation,
the pump display will remain blank.
Safety Functions
Intrauterine pressure reaches
150 mmHg
Intrauterine pressure 10 mmHg above
preset intrauterine pressure setting
Intrauterine pressure > 200 mmHg
Check Tube Set Installation
Pressure measuring system malfunc-
tions
Scale overload
Loading/unloading scale while in oper-
ation
Pressure setting at restart
Deficit limit
Deficit rate >300 ml/min
Serious system defect
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