AirSep AS-20 Instruction Manual page 34

12/02
7) Make sure the exhaust from the filter drain does not contain water or oil. If the
exhaust contains water or oil, press the manual drain button on the control
panel until the exhaust no longer contains liquid.
8) To purge oxygen at less than design purity from the oxygen receiver, while
the oxygen generator is running in manual mode, open a manual valve on the
oxygen receiver to vent gas until the gas no longer discharges from the
oxygen receiver, then fully close the manual valve.
9) Allow the oxygen generator to operate until the OXYGEN RECEIVER
PRESSURE gauge on the control panel registers approximately 380–415
kPa (55-60 psig).
10) Set the AUTO/MANUAL switch on the control panel to AUTO.
11) For AS-450 through AS-1000 models ONLY: Open the manual product
valve
12) Observe the FEED AIR Pressure and CYCLE PRESSURE gauges on the
control panel for at least one cycle (approximately 180 seconds). As the unit
cycles, the feed air pressure should not decrease below 480 kPa (70 psig)
and the peak cycle pressure should not exceed 480 kPa (70 psig). On the
AS-450 through AS-1000 models, observe the readings on the two bed
pressure gauges.
6-2
When you start the oxygen generator, air exhausts for 3–5
seconds from the filter drain port on the rear of the unit to remove
any condensate that may be present in the filter bowls. This
removes condensate from the feed air before the feed air enters
the adsorbers. During normal operation, air exhausts from the
filter drain for 3–5 seconds every 10 minutes.
Always vent oxygen outside. While venting oxygen, do not
allow smoking or open flame. Do not allow venting oxygen to
come in contact with clothing or hydrocarbon-based materials.
When the oxygen generator cycles, i.e., it produces oxygen;
the amber light on the AUTO/MANUAL switch illuminates.
When the unit enters standby, i.e., it remains on but does not
produce oxygen; the amber light on the AUTO/MANUAL switch
shuts off.
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AirSep Corporation
AS-20—1000 Instruction Manual