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AirSep
Corporation
Circuit Board/PLC
The circuit board/PLC controls the cycle time and sequence of operation of the
solenoid and the drain valves.
Flow Controller (Not available on AS-A and AS-E — AS-P models)
The flow controller ensures consistent flow of the product oxygen.
Pressure Switch
When the oxygen generator operates in Auto mode, the pressure switch monitors
the oxygen pressure in the oxygen receiver. When the pressure in the oxygen
receiver increases to the pressure switch upper setpoint, the pressure switch
circuit closes and the oxygen generator starts a timed shutdown that stops the unit
at the end of the shutdown sequence. When the pressure in the oxygen receiver
decreases to the lower setpoint of the switch, the pressure switch opens to activate
the oxygen generator, and the oxygen production begins. When the oxygen
generator operates in Manual mode, the pressure switch circuit is bypassed and
the oxygen generator cycles continuously.
Relief Valves (not shown)
The relief valves, one on each adsorber, ensure that the pressure in the adsorbers
does not exceed the rated maximum pressure of the adsorbers.
Transformer
The transformer provides the proper voltage for the electrical components of the
oxygen generator.
AS-A—AS-P Series Instruction Manual
4-7
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