Oxygen concentrators troubleshooting: models and common symptoms

7 oxygen concentrators with troubleshooting records in ServiceForge. Each model page lists every documented symptom with its ranked causes and first check.

Models

• AirSep NewLife 31 symptoms
• AirSep NewLife Elite 14 symptoms
• DeVilbiss 505 23 symptoms
• Invacare 3LX 14 symptoms
• Pacific Consolidated Industries E- -120 33 symptoms
• Pacific Consolidated Industries EDOCS-120 203 symptoms
• Philips EverFlo 49 symptoms

Common symptoms

• 1st stage piston rings worn or damaged EDOCS-120, EDOCS-120
• Blower drive belt tension incorrect EDOCS-120, EDOCS-120
• Clacking noises in cylinder head EDOCS-120, EDOCS-120
• Higher than normal 1st stage pressure EDOCS-120, EDOCS-120
• Low operating pressure NewLife, NewLife Elite
• Power failure alarm does not activate NewLife, NewLife Elite

ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual.