AirSep AS-Q, Instruction Manual, Page: 46 / 198

46 AS-Q—AS-Z Series Instruction Manual
AirSep Corporation
5. Observe the discharge from the automatic drain valves during normal
operation. The discharge from the drain valves should not contain
condensate at the end of each drain cycle. If condensate remains in
the discharge at the end of the drain cycle, adjust the timers on the
drain valves to either increase the length of time for the drain cycle or
decrease the interval between drain cycles until the discharge at the
end of the drain cycle is free of condensate.
To adjust the time for the drain cycle, use the lower knob on the timer on the drain
valve. Rotate the knob counterclockwise to decrease the time or clockwise to
increase the time.
To adjust the interval between drain cycles, use the upper knob on the timer. Rotate
the knob counterclockwise to decrease the interval or clockwise to increase the
interval.
Excess operation of the automatic drain valves may decrease the
quantity of feed air enough to impair the performance of the oxygen
generator. Set the timers to allow the drain valves to operate long
enough to drain all the condensate from the discharge but not long
enough to allow air-only discharge for more than a few seconds.
7.3 SEMI-ANNUAL MAINTENANCE
Perform the semi-annual maintenance procedure only with the oxygen generator
shut down.
Do not attempt to remove the filter bowls until the filter assembly
fully depressurizes.
7.3.1. PARTICULATE FILTER REPLACEMENT
The particulate filter removes rust, pipe scale, and other foreign particles from
the feed air. It also separates most of the condensed water and oil from the air.
Use the following procedure to replace the particulate filter element(s) at least
every six months or as required:
The expected life of the particulate filter is approximately six
months. Its purpose is to protect and extend the life of the
coalescing filter. The life of the particulate filter depends on air and
piping quality. The particulate filter has a rating of 5 microns.
Follow all steps in Section 6.6 — Extended Shutdown.
Follow all steps in Section 6.2 — Initial Start-Up.