AirSep MN105-1 C - Manual (Page 11)

AirSep ® Corporation
NewLife ® Elite Service Manual
2.0 Operation Check and Oxygen Concentration Test
2.1 Description of Operation
Air enters the NewLife Oxygen Concentrator through an external air intake
gross particulate filter. This filtered air enters the compressor via a suction
resonator, which 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, thus producing high
concentration oxygen.
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 produces oxygen for approximately eight seconds and delivers it
to the product tank. Oxygen exits the product tank through a pressure regulator,
product filter, flow control valve, flowmeter, and finally exits the unit. The flow
control valve, which is part of the flowmeter, controls the amount of oxygen
delivered to the patient. The NewLife unit delivers up to 95.5% pure oxygen at
flow rates from 1–5 lpm.
NOTE: NewLife Elite OxiSilent™ option incorporates an additional felt intake
filter prior to air entering the compressor.
2.2 Operation Check
AirSep tests every NewLife Oxygen Concentrator thoroughly after manufac-
ture. You must perform the following test to ensure that no damage occurred
in shipping or handling.
1 Open and inspect all cartons (that contain units) 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 the unit itself
is damaged, note it on the freight bill signed by the driver.
2 Plug in the power cord of the unit, and set the ON/OFF switch to the
ON position. Check to see that the following occurs:
a. A continuous alarm loudly sounds for approximately
five seconds to indicate that the battery for the alarm
is good. See the trou bleshooting chart in Section 6.0 of
this manual if the unit’s alarm does anything other than
sound loudly for five seconds.
b. The compressor runs. Listen for the sound.
c. Exhaust air flows out of the bottom of the unit.
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