On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Reduced airflow, low output, overheating, or alarms caused by clogged filters or restricted air intake/exhaust.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- If the concentrator is in use, move the patient to a backup oxygen source before troubleshooting.
Expected: Patient continues receiving prescribed oxygen
Why it matters: Airflow restriction can reduce oxygen delivery and compromise therapy
Verify the Reported Issue
- Reduced airflow output
- Low oxygen purity or flow alarms
- Increased noise or heat
Expected: Symptoms are consistent and reproducible
Why it matters: Confirms airflow restriction vs unrelated issue
Check External Air Intake (Most Common Cause)
- Ensure vents are not blocked by walls, bedding, or dust buildup
- Confirm at least several inches of clearance around the unit
Expected: Air can freely enter the concentrator
Why it matters: Restricted intake reduces compressor efficiency and oxygen production
Inspect and Clean External Filters
- Check for dust, lint, or debris buildup
- Clean per facility protocol (typically rinse, dry completely, reinstall)
Expected: Filter is clean and allows airflow
Why it matters: Clogged filters are the most common cause of airflow restriction
Check Internal/Secondary Filters (If Accessible Without Disassembly)
- Inspect for heavy contamination
- Replace if visibly dirty or per maintenance schedule
Expected: Filters are clean or replaced
Why it matters: Secondary filters can silently restrict airflow over time
Inspect Exhaust Venting
- Ensure no obstruction at rear or sides
- Feel for warm air discharge while running
Expected: Warm air is expelled freely
Why it matters: Blocked exhaust traps heat and reduces system performance
Check for Environmental Factors
- Excessive dust, lint, or pet hair in the area
- Unit placed on carpet or soft surfaces restricting airflow
Expected: Unit is in a clean, well-ventilated location
Why it matters: Poor environment accelerates filter blockage and airflow issues
Re-test Unit Performance
- Power on and monitor airflow and alarms
- Confirm normal operation and reduced noise/heat
Expected: Airflow returns to normal and alarms clear
Why it matters: Confirms issue was caused by airflow restriction
If the Problem Persists
If airflow issues continue after cleaning filters and ensuring proper ventilation, internal components such as the compressor or internal airflow pathways may be restricted or failing. Remove the device from service, label it Out of Service, and send for bench evaluation or repair. Knowing when to stop prevents unnecessary risk and improper repair attempts.
Clinical Use Tip
Never troubleshoot airflow or filter issues while the device is actively supplying oxygen to a patient. Always transition the patient first.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Oxygen concentrator alarming for low flow and reduced output."
Cause
What was observed during troubleshooting.
Example:
"Intake filter heavily clogged with dust restricting airflow."
Resolution
What action was taken.
Example:
"Cleaned filter, verified proper airflow and normal operation."
Helpful Details to Include (If Known)
- Intake vents checked and cleared
- Filters cleaned or replaced
- Exhaust airflow verified
- No abnormal noises beyond normal compressor operation
- No overheating after cleaning
- Final device status confirmed operational
Final Thought
Airflow issues are one of the most common and preventable causes of oxygen concentrator problems. Starting with simple external checks like filters and ventilation ensures safe, efficient troubleshooting. Proper escalation protects both the patient and the equipment, while clear documentation supports long-term reliability and maintenance tracking.
That is successful troubleshooting.