Dräger MIcroVent - Troubleshooting

The table below is intended as a quick reference for
recognizing and correcting causes of alarms.
NOTE: The messages in the table are listed in
alphabetical order.
Troubleshooting
Alarm screen messages are displayed hierarchically,
i.e., in order of priority.
If, for example, two faults are detected simultaneously,
the more serious fault will be displayed.
Troubleshooting
50
Operating Instructions MicroVent
Problem / Message Likely causes Remedy
AC power failure No external supply available. Connect to electrical power supply
as soon as possible.
Apnea
Alarm status light flashing,
intermittent audible alarm.
Patient's spontaneous breathing in
CPAP mode insufficient.
Switch to CMV or SIMV.
Bat. discharged
Alarm status light flashing,
intermittent audible alarm.
Battery discharged; no external
power supply.
Replace battery pack with new pack
or connect to external power supply.
Change bat.
Alarm status light flashing, single
beep every 30 seconds. Display
illumination cannot be switched on.
Battery pack will be discharged
within a few minutes, external power
supply not connected.
Replace battery pack with new pack
or connect to external power supply.
Charge NiCd
Alarm status light flashing, single
beep every 30 seconds. Display
illumination cannot be switched on.
NiCd pack will be discharged within
a few minutes, external power supply
not connected.
Replace rechargeable battery pack
with a fully charged NiCd pack or
connect to external power supply.
Check settings
Alarm status light flashing,
intermittent audible alarm.
Settings utside ventilator performance
limits; required flow is less than
10 L/min or greater than 80 L/min.
Adjust set parameters; e.g.
f, VT or Tinsp.
Defective NiCd Ventilator connected to external
power supply. Defective NiCd pack.
Replace rechargeable battery pack
with a new NiCd pack.
Flow measurement INOP
Flow measurement not operable.
Signals from flow measurement are
not used for alarms.
Ventilation may be continued.
After shutdown, call DrägerService.
Leakage
Alarm status light flashing,
intermittent audible alarm.
The measured expiratory minute
volume has fallen to about 40 % be-
low inspiratory minute volume.
Correct leakage in patient system
and/or in ET-tube, if necessary.
Loss of CPAP CPAP drops suddenly by more than
5 cmH2O or
circuit connections leaking.
Change CPAP pressure in small
increments only. Make sure
connections are leak free.