AirSep AS-A, Instruction Manual

Page: 42 / 192

AirSep
®
Corporation
7-6 AS-A—AS-P Series Instruction Manual
To fully depressurize the oxygen generator components, follow
the steps 2-9 to depressurize the filter assembly as described
in section 7.4.
If the pressure gauges do not decrease to zero, shut down the
unit and call the AirSep Corporation Commercial Products
Division.
8) If the unit is depressurized, power down the unit if required and proceed to
perform the maintenance.
7.7 Adjusting the Feed Air Regulator
The feed air regulator may require re-adjustment after any maintenance is
performed. Please ensure that the feed air regulator setting is not changed during
re-adjustment.
Setting the Feed air regulator to a value such that the
maximum oxygen generator cycle pressure is 80 psig or more
can cause severe damage to the molecular sieve in the
adsorbers which will not be covered under AirSep’s warranty.
If the feed air regulator requires adjustment, perform the following procedure. If
applicable, remove the front cover of the enclosure to gain access to the regulator.
(See Section 7.3, Removing the Front Cover of the Enclosure.)
Use extreme caution when performing this procedure since it
requires removal of the front cover of the enclosure while the
unit receives electrical power.
1) Unlock the lock nut on the adjustment knob.
2) To increase feed air pressure, rotate the knob clockwise. To decrease feed
air pressure, rotate the knob counterclockwise.
The numbers on the dial of the feed air regulator do not always
directly correspond to the actual cycle pressure in the system.
Always rely on the cycle pressure gauge when adjusting the
regulator.