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Problem, Possible cause, Solution – AirSep MN126-1 C User Manual

Page 63

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Problem

Possible Cause

Solution

Oxygen concentration is
below specifications in
test mode.

Unit’s temperature is too high.
Blocked air intake or outlet; or
defective fan.

Leaks.

Restriction exhaust filter.

Defective
Compressor

Contaminated adsorbent beds.

Defective solenoid valve.

Clear any obstruction in

air intake or outlet filter; or

replace fan as needed.

Correct any leaks.

Replace exhaust filter.

Replace Compressor

Replace adsorbent beds.

Replace solenoid

valve.

Unit does not deliver

oxygen.

Cannula kinked or not properly

connected.

FreeStyle is not turned on.

Battery is dead.

Defective Universal AC /
DC power supply.

OCD sensor defective.

OCD solenoid valve defective.

Check cannula and the

cannula connection.

Turn FreeStyle on to the

prescribed setting.

Replace battery.

Replace Universal AC /
DC power supply.

Replace main circuit
board.

Replace defective

OCD solenoid valve.

Unit continuously flows
oxygen (instead of pulse flow
delivery).

Service LED is on.

Service LED does not light
at required 5,000-hour
service.
No hour meter display.

Defective OCD valve.
.



Service check required.

Defective keypad




Defective hour meter display.

Replace defective OCD
solenoid valve.

Perform routine service
and reset hour meter in
maintenance mode.

Replace keypad



Replace hour meter.

7-4

AirSep Corp. — FreeStyle Service Manual