Troubleshooting

If the Air-Oxygen Blender fails to function, consult the Troubleshooting Guide below.

If problem cannot be solved by using Troubleshooting Guide refer to the Air-Oxygen Blender Service Manual (P/N 504827) available on the Internet; www.precisionmedical.com or consult your Provider.

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

 

 

 

Air-Oxygen

13

 

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Precision Trading PM5300, PM5200 user manual Troubleshooting, Problem Probable Cause Remedy