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What This Guide Helps With
This guide assists in troubleshooting compressor or blower failures on the CareFusion AVEA. Failure of the compressor or blower can prevent proper gas delivery, trigger high-pressure or low-flow alarms, and compromise patient ventilation.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Move the patient to an alternative ventilator or manual ventilation before proceeding.
- Confirm alarms are silenced and do not interfere with patient care.
Check Power Source
- Verify the ventilator is connected to a live outlet or fully charged battery.
- Confirm the power switch is on and circuit breakers are not tripped.
- Expected outcome: Ventilator powers on without error codes.
Inspect Air Supply and Connections
- Check all gas inlet lines for proper connection and no kinks or obstructions.
- Inspect the compressor or blower intake for dust, debris, or blockage.
- Expected outcome: Clear airflow path, no restriction to intake.
Listen for Unusual Noises
- Turn on the ventilator and listen for abnormal motor sounds (grinding, squealing, or failure to spin).
- Expected outcome: Normal operational sound indicates external causes are less likely.
Verify Settings and Alarms
- Check the ventilator display for specific blower/compressor error messages.
- Confirm that no settings inadvertently limit airflow (e.g., low tidal volume or high-pressure limits).
- Expected outcome: Error messages cleared if caused by misconfiguration.
Swap External Components
- If a backup compressor or blower module is available, swap to confirm whether the issue is internal or external.
- Expected outcome: Device operates normally with a known good module, confirming internal component failure in the original module.
If the Problem Persists
If all external checks pass and the ventilator still fails to deliver proper airflow:
- Remove the ventilator from service.
- Label it Out of Service.
- Send the device for internal repair or bench evaluation.
Knowing when to stop prevents further patient risk and ensures proper escalation.
Clinical Use Tip
Never troubleshoot blower or compressor issues while the patient is actively connected. Always secure a backup ventilator before testing or running diagnostics.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
Ventilator failed to deliver adequate airflow; blower error alarm displayed.
Cause
What was observed during troubleshooting.
Example:
Compressor motor not operating; no airflow detected despite proper power and connections.
Resolution
What action was taken.
Example:
Device removed from service, labeled Out of Service, and sent for bench repair.
Helpful Details to Include (If Known)
- Power outlet verified and functional.
- Gas lines and intake free of obstruction.
- Any unusual sounds noted.
- Alarm codes recorded.
- Device status after attempted troubleshooting.
Final Thought
Patient safety and proper escalation are paramount. Systematically ruling out external causes ensures accurate diagnosis without risking patient care. Documentation via CCR ensures continuity and supports future maintenance decisions.
That is successful troubleshooting.