AirSep MN179-1 B - Manual (Page 13)

MN179-1 _ 02/14 AirSep Corp. - FreeStyle 5 Service Manual Rev B
2.0 Operation Check and Test of Oxygen Concentration
2.1 Description of Operation
Air enters the FreeStyle 5 Oxygen Concentrator through an external air intake /
gross particle filter. This filtered air enters the compressor via a muffler that quiets
the compressor’s suction sound.
Next, a two-way solenoid feed valve directs the air into one of two sieve beds that
contain molecular sieve. The unique property of molecular sieve enables it to
physically attract (adsorb) nitrogen when air passes through this material, thereby
separating the nitrogen from the oxygen in ambient air.
There are two sieve beds: While one produces high-concentration oxygen, the
other is purged of the nitrogen it adsorbed (collected) while it made oxygen.
In addition to the molecular sieve beds that allow oxygen to be separated from
air, FreeStyle 5 contains an Oxygen Conserving Device (OCD) valve that
controls delivery of high-concentration oxygen to the patient at the point in the
breathing cycle when the patient starts to inhale.
FreeStyle 5 delivers a gas consisting of 90% (+5. 5 -3%) oxygen
at pulse flow rates
equivalent from approximately 1–5 LPM.
2.2 Operation Check
AirSep tests every FreeStyle 5 Oxygen Concentrator thoroughly after
manufacture. You must perform the following test to ensure that no damage
occurred in shipping or handling.
1. Open and inspect all cartons upon delivery. Unpack the unit and
remove it from the carton. Inspect the unit itself for damage. If
the exterior of a unit’s carton is damaged, or if the unit itself is
damaged, note this on the freight bill signed by the driver.
2. Connect the power supply to the unit, and turn the unit on by pressing
flow setting [5]. Check to see that the following sequence occurs:
a. A brief, continuous alarm sounds to indicate that FreeStyle 5
has been turned on.
b. The compressor runs.
c . After a 10 second start up is complete,
the fan turns on.
d. Exhaust air flows from the unit.
3. Perform an oxygen concentration test, as described in Section 2.4.