AirSep AS-Q, Instruction Manual, Page: 41 / 198

AS-Q—AS-Z Series Instruction Manual 41
AirSep Corporation
During initial start-up or start-up after a long period, the oxygen
concentration can be lower than the low concentration alarm and/
or shutdown setpoint and a ‘low concentration’ alarm may exist.
However, the oxygen generator ignores the oxygen concentration
shutdown setpoint for the first 60 minutes after start-up. If the
oxygen concentration after 60 minutes of operation is still below the
low concentration shutdown setpoint, the oxygen generator shuts
down.
The FEED PRESSURE must be above the feed air low pressure
shutdown level specified in this instruction manual for the oxygen
generator to run.
Make sure the POWER lights on the automatic drain valves at the base of the
filter bowls illuminate. Press the manual override buttons on the PARTICULATE
FILTER DRAIN valve and the COALESCING FILTER DRAIN valve, and make sure
air discharges from the drain outlets.
Make sure the exhaust contains no liquid. If liquid discharges,
press the manual override buttons on the drain valves until the
exhaust no longer contains liquid.
The automatic drains on the oxygen generator exhaust periodically
during operation to remove condensate from the filter bowls.
Adjust the automatic drain timer so that the exhaust contains no liquid without
overdrawing the feed air. The typical timing for the drain valve operation is 5 sec
every 10 min.
Press the ‘START’ icon on the Oxygen Generator Control Screen. You may press
the ‘Silence Horn’ icon on the main screen to silence the alarm due to low oxygen
concentration. The ‘Silence Horn’ icon bypasses the horn for 10 minutes.
Open the MANUAL FEED #2 valve (V-2) slightly. The valve should be open no
more than 20-25%. Allow the unit to run this way until the bed pressures reach a
maximum of 55-60 psig each cycle. This will take approximately 5 minutes. Once
this pressure is reached, open the valve so that it is no more than 50% open. Allow
the unit to run this way until the bed pressures reach a maximum of 60-65 psig each
cycle. This will take approximately an additional 5 minutes. Lastly, open the valve
so that it is no more than 75% open. Allow the unit to run this way until the bed
pressures reach a maximum of 70-75 psig each cycle. This will take approximately
an additional 5 minutes.