Operation; Shutdown - AirSep AS-20 Instruction Manual

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AirSep Corporation
13) Observe the OXYGEN RECEIVER PRESSURE gauge on the control panel.
When the pressure in the oxygen receiver increases to approximately 380–
415 kPa (55–60 psig), the oxygen generator stops producing oxygen and
enters standby. When delivery of product oxygen reduces the pressure in the
oxygen receiver below 310 kPa (45 psig), the oxygen generator begins to
cycle and the amber light on the AUTO/MANUAL switch illuminates.
14) After the oxygen receiver pressurizes, adjust the pressure regulator at the
outlet of the oxygen receiver until the pressure of the product oxygen meets
the needs of your application.
At this point, the oxygen is ready for use by your application.
6.2
The oxygen generator can be operated in auto or manual mode depending on the
requirements of your application. To use product oxygen that meets the
specifications for your model listed in Appendix A of this instruction manual, set the
AUTO/MANUAL switch to AUTO to produce oxygen only during times of oxygen
demand. To obtain maximum oxygen purity at less than maximum flow or to obtain
a delivery pressure of 345 kPa (50 psig), set the AUTO/MANUAL switch to
MANUAL to force continuous operation of the unit regardless of the pressure in the
oxygen receiver.
6.3
1) Stop the flow of product oxygen from the oxygen receiver to your application
by fully closing all manual valves between the outlet of the oxygen receiver
and the inlet to your application.
2) Make sure the AUTO/MANUAL switch on the control panel is set to AUTO.
3) Allow the oxygen receiver to repressurize fully. When the oxygen receiver
repressurizes, after a time delay of five cycles, the oxygen generator stops
cycling and the amber indicator light on the AUTO/MANUAL switch shuts off.
AS-20—1000 Instruction Manual
If the feed air pressure decreases below 480 kPa (70 psig) or
the peak cycle pressure exceeds 480 kPa (70 psig), refer to the
troubleshooting chapter of this instruction manual.
Under normal use, the pressure switch in the oxygen generator
does not require adjustment. If you need to adjust the pressure
switch, refer to the maintenance chapter of this instruction
manual.

Operation

Shutdown

12/02
6-3