C- Operational Troubleshooting - BIO-MED DEVICES CROSSVENT-3+ Operation & Service Manual

V. SETTINGS MENU AND TROUBLESHOOTING, cont'd.
C C C C - - - - OPERATIONAL TROUBLESHOOTING OPERATIONAL TROUBLESHOOTING
OPERATIONAL TROUBLESHOOTING OPERATIONAL TROUBLESHOOTING
PROBLEM
Fails to respond to touch
selection of a key
Parameter value seems
inappropriate
Unit fails to turn on when
"ON/OFF" switch is set to
on.
Internal regulator output
pressure varies
Low internal pressure
regulator output
Incorrect peak pressure and
PEEP/CPAP reading
Uncontrolled auto-cycle;
remains in inspiratory mode
System pressure reads zero
Peak pressure high limit
alarm activates
Peak Pressure Low limit
alarm activates
POSSIBLE CAUSE
1. Keys locked
2. Defective touchscreen key
Wrong parameter selected
1. Battery low and plug-in
power supply not connected.
2. No power at outlet and
battery low.
Low pressure/flow from gas
source; fault in gas supply
1. Output pressure not set;
insufficient gas supply
2. Dirty or clogged filter
1. Pressure transducer
disconnected or malfunction
2. Pressure transducer is out of
calibration
1. Pressure Trigger setting is
too sensitive
2. Pressure transducer
malfunction
1.Peak pressure limit control is
fully off
2. Tube disconnected between
patient and ventilator
1. Accumulation of secretion
2. Change in compliance;
blockage in airway or tubing
3. Patient tries to
independently
4. Endotracheal tube has
slipped down into a bronchus
5. Change in patient positioning
6. Pneumothorax
7. Sigh
1. Disconnected patient circuit
2. Endotracheal tube has
slipped down into a bronchus
3. Water in patient circuit
4. Decrease in lung compliance
CORRECTIVE ACTION
1. Press LOCK key twice to unlock
2. Submit for service
Select correct parameter
1. Plug in charger to active outlet and
charge battery
2. Plug into active outlet and charge
battery
Increase gas volume/pressure
1. Set output pressure; check gas
2. Service needed
1. Service needed
2. Service needed
1. Increase Pressure Trigger setting
2. Service needed
1. Adjust the maximum pressure limit
control
2. Connect tube
1. Examine patient
2. Remove the blockage or replace the
airway/tube
breath 3. Re-evaluate patient status and vent
settings
4. Correct the tube position
5. Re-evaluate patient and vent
settings
6. Treat patient
7. Set the high alarm limit higher
1. Reconnect patient circuit
2. Reposition endotracheal tube
3. Empty water from patient circuit
4. Re-evaluate patient
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