Covidien Puritan Bennett 560 User Manual page 65

Table 3-2. Alarms and Corrective Actions (Continued)
Alarm Message or
Symptom
LOW VTE
LOW VTI
NO PROXIMAL LINE2
PATIENT
DISCONNECTION
*IF PERSISTS RESTART/SRVC
User's Manual
Possible Reason(s) For The Alarm Event
Patient circuit obstructed.
Leak in the patient circuit.
Exhalation block missing or disconnected.
Adjustment of a Min VTE threshold when
the patient circuit is in a single-limb
configuration.
Inappropriate patient circuit.
Exhalation flow sensor not properly
calibrated.
Defective exhalation flow sensor.
Adjustment of the Min VTE level too high.
Adjustment of the Min VTI level too high
(for PSV, CPAP, P A/C, P SIMV and V SIMV
modes)
Adjustment of the pressure level not
enough to reach the volume required (for
PSV, CPAP, P A/C, P SIMV and V SIMV
modes).
Patient circuit obstructed or disconnected.
Inappropriate patient circuit.
Defective flow sensor or internal leak in the
machine.
The proximal pressure line is disconnected.
Adjustment of Min PIP too high.
Leak or loose connection in the patient
circuit.
Circuit disconnection from patient or
ventilator.
Inspiratory flow exceeds 130 LPM.
Inappropriate patient circuit.
Defective internal circuits of the machine or
pressure sensor.
Alarms and Troubleshooting
Corrective Action(s)
Clean, unblock, and/or properly connect the
patient circuit.
Check and properly connect the patient
circuit connections.
May be caused by increased resistance
across exhalation filter (such as excessive
moisture).
Restore or connect the exhalation block
(refer to section 4.7, "Exhalation
the exhalation block has been removed or
replaced, calibrate the exhalation flow
sensor. Call your customer service
representative.
Set the Min VTE alarm limit to OFF.
If exhaled tidal volume monitoring is
required, use the double-limb circuit.
Replace the patient circuit with an
appropriate one.
Calibrate the exhalation flow sensor.
Replace the defective component(s) and
calibrate the exhalation flow sensor. (Call
your customer service representative.
Modify the Min VTE level.
Modify the Min VTI level.
Modify the pressure level according to the
physician's prescription.
Clean, unblock, and/or reconnect the
patient circuit.
Replace the patient circuit.
Check patient, replace the device and call
your technician or customer service
representative.
Connect proximal pressure line.
Decrease the Min PIP threshold.
Check the patient circuit connections to the
ventilator; examine all connections for
leakage and tightness.
Replace the patient circuit if necessary.
Check Min PIP alarm setting.
Adjust Apnea alarm setting.
Replace the patient circuit.
Restart ventilator to see if alarm clears. If
not, have a qualified technician replace the
defective component(s) or call your
customer service representative.
Block"). If
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