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Contact Customer Support 1-800-482-2473 or Technical Service 770-721-7759

Copyright © 2014 Chart Industries  ML-CONC0028 B

CAIRE Inc. reserves the right to discontinue its products, or change the prices, materials, equipment, quality, 
descriptions, specifications and/or processes to its products at any time without prior notice and with no further 
obligation or consequence. All rights not expressly stated herein are reserved by us, as applicable.

Alarm/Light Indicators

When a pulse of oxygen is sent through the nasal cannula, the green light above the selected flow setting flashes each time a breath is 
detected.

Start-Up:

 A brief alarm sounds at start-up.

Low Battery:

 As battery power approaches a low level, a brief alarm sounds intermittently, and the yellow 25% BATT light also flashes 

intermittently.

Cannula Disconnected:

 When unit is operating but does not sense breathing, (15 minutes) a constant alarm sounds with the red light.

FreeStyle’s Capacity is Exceeded:

 If breathing rate causes the capacity of unit to be exceeded, a rapid alarm sounds with the red light. 

(When this occurs, the concentration of oxygen is dropping below unit specifications.)

General Malfunction:

 If unit has a general malfunction, a rapid alarm sounds, and the red alarm light illuminates continuously. (When 

this occurs, the concentration of oxygen is dropping below unit specifications.)

Service Indicator/Alarm:

 When the alarm service/indicator illuminates (yellow), it is recommended that the FreeStyle be serviced by the 

Equipment Provider. This will illuminate every 5,000 hours and after service will be reset.

Filter—Air intake

At least one time each week, remove the inlet cover on the lower front of the unit, and wash the air intake filter. Allow to dry thoroughly.

Checking Oxygen Concentration

1. Connect the FreeStyle to AC power (plug it into the wall).
2. Open the cover of the control panel and press flow setting [2].
3. Activate the unit’s test mode by pressing flow setting [1] and [3] simultaneously for 10 seconds. After 10 seconds, the alarm will beep 

and the unit will then start to auto pulse in flow setting 3.

4. Verify FreeStyle is pulsing, (you should be able to hear the pulse of oxygen and see the Light turn off momentarily above the flow 

setting). Allow FreeStyle to run for 5 minutes before connecting the oxygen analyzer.

5. With a short length of tubing, connect a calibrated oxygen analyzer to the oxygen outlet and record the unit’s concentration. The 

concentration specification in test mode is 90% -3%/+5%. Note: Fast response fuel cell analyzer are recommended.

Nasal Cannula & Tubing

The FreeStyle unit uses a standard nasal cannula. Tubing and/or cannula should not exceed 25 feet (7.62 m).

Sleep Mode

There may be times when the unit will not power on from battery power even though the battery shows that it is still charged. Most likely, the 
unit has gone into Sleep Mode. All new and refurbished FreeStyle units are shipped from the factory in Sleep Mode. Sleep mode can also occur 
if the internal battery has been removed or replaced, or if the unit has been unused and sitting for some time. To bring the unit out of Sleep 
Mode, simply plug the unit into AC power, this will awaken the unit and allow it to run normally under battery power.

Hour Meter

The FreeStyle contains a digital hour meter that is mounted internally on the circuit board. It is visible by removing the front case of the unit.
The hour meter is dual function. It contains a setting to display both total hours and maintenance hours. The maintenance hours are indicated 
by a wrench on the display. A button to the right of the meter is used to toggle between the two modes. Holding the button for 3 seconds re-
sets the maintenance hours and clears the yellow service light that illuminates at 5,000 hours. 

Routine Maintenance

The FreeStyle POC requires minimal maintenance. Perform the following steps below to ensure proper maintenance and function.

1. Concentration Check – Schedule the unit for purity/concentration checks according to your company policy.
2. Air Intake/Gross Particle Filter – located on the lower front panel, this filter should be washed weekly. Allow to dry thoroughly.
3. Service Check – Every 5000 hours the yellow service light/Light in the upper left corner of the control panel will illuminate continuously, 

indicating compressor check.

4. Product Filter – This internal filter must be replaced every 10,000 hours.

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