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2.0
Operation Check and Oxygen Concentration Test
2.1 Description of Operation
Air enters the LifeStyle Oxygen Concentrator through an external air intake / gross
particle filter. This filtered air enters the compressor via a suction resonator that quiets
the compressor's suction sound. Pressurized air then exits the compressor and passes
through a heat exchanger. The heat exchanger reduces the temperature of the com-
pressed air. 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. Each adsorber
(bed) produces oxygen for approximately eight seconds and delivers it through a
product tank to the regulator. From the regulator, oxygen passes through the product
filter and then to the outlet fitting.
In addition to the molecular sieve beds that allow oxygen to be separated from air,
LifeStyle 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.
LifeStyle delivers a gas consisting of 90% (±3%) oxygen at pulse flow rates from 1–5 lpm.
2.2 Operation Check
AirSep tests every LifeStyle Oxygen Concentrator thoroughly after manufacture. You
must perform the following test to ensure that no damage occurred in shipping or
handling.
1.
2.
3.
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.
Connect the power cord of the unit, and set the
position. Check to see that the following sequence occurs:
a.
A brief, continuous alarm sounds to indicate that LifeStyle has
been turned on.
b.
The compressor runs.
c.
Exhaust air flows from the unit.
Perform an oxygen concentration test, as described in Section 2.4.
2-1
switch to the
ON/OFF
ON
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