Troubleshooting
If the 
If problem cannot be solved by using Troubleshooting Guide refer to the 
Problem | 
  | Probable Cause | 
  | Remedy | 
  | 
  | 
  | 
  | 
  | 
Oxygen  | 1.  | High Flow model,  | 1.  | Use auxiliary outlet  | 
concentration  | 
  | flow requirement  | 
  | & engage bleed  | 
discrepancy  | 
  | below 15 lpm.  | 
  | 
  | 
between Blender  | Low Flow model,  | 
  | 
  | |
setting and  | flow requirement  | 
  | 
  | |
Analyzer/Monitor  | 
  | below 3 lpm.  | 
  | 
  | 
(greater than 3%)  | 2.  | Analyzer/Monitor  | 2.  | Recalibrate  | 
  | 
  | inaccurate  | 
  | Analyzer/Monitor or  | 
  | 
  | 
  | 
  | Verify with second  | 
  | 
  | 
  | 
  | Analyzer/Monitor  | 
  | 3.  | Low flow bleed  | 3.  | Remove obstruction  | 
  | 
  | obstructed  | 
  | 
  | 
  | 4.  | Gas supply  | 4.  | Check gas sources  | 
  | 
  | contaminated  | 
  | with calibrated  | 
  | 
  | 
  | 
  | Oxygen Analyzer/  | 
  | 
  | 
  | 
  | Monitor to confirm  | 
  | 
  | 
  | 
  | Oxygen is 100% and  | 
  | 5.  | Downstream device  | 
  | Air is 21%  | 
  | 5.  | Isolate Blender.  | ||
  | 
  | causing back flow  | 
  | Check oxygen  | 
  | 
  | or restricted flow  | 
  | concentration at  | 
  | 
  | 
  | 
  | Blender Outlets  | 
  | 
  | 
  | 
  | 
  | 
No flow at  | 1.  | Gas sources turned  | 1.  | Turn gas sources  | 
Blender outlets  | 
  | “OFF” | 
  | “ON”  | 
  | 2.  | Gas sources not  | 2.  | Connect gas  | 
  | 
  | connected  | 
  | sources  | 
  | 
  | 
  | 
  | 
  | 
Alarm sounding  | 1.  | Difference between  | 1.  | Correct pressure  | 
  | 
  | Oxygen and air inlet  | 
  | difference until  | 
  | 
  | pressures greater  | 
  | Air and Oxygen  | 
  | 
  | than specified  | 
  | pressures are within  | 
  | 
  | 
  | 
  | specification  | 
Blender | 
  | 
  | |
  | |
13  | |
  |