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Effective April 2006
27
External Components Description
Feed Air In -
This connection is used to supply the feed air to the oxygen generator. It is
located on the left side of the machine as you face it. A hose or pipe should be
attached to this fitting. It should be of adequate diameter to supply air at a
sufficient pressure and flow rate to feed the generator.
OGSI
can assist in sizing
this line, if necessary.
Feed Air Pressure Gauge -
This gauge indicates the pressure of the air supplied to the beds after its has
been regulated and filtered. While the generator is cycling, this gauge should
vary between 35 PSIG and 70 PSIG (240 kPa and 480 kPa).
Off /Continuous /Automatic Selector Switch -
The control switch is used to turn power to the generator on and off and to select
the mode of operation desired. Naturally, in the off position there is no power to
the unit and the light inside the switch remains off.
When the switch is turned one position to the right (so that it points straight up
and down), the ‘Continuous’ mode has been selected and the unit will cycle
regardless of whether or not oxygen is being drawn from the storage tank. The
light inside the switch will always be on as well. The advantage to operating in
this mode is that oxygen should be available at a slightly higher pressure than if
in the automatic mode. How much higher depends on the demand for it. The
disadvantage to operating in this mode is that your compressor will run more
often.
Turning the switch to the far right position puts the generator in the ‘Automatic’
mode. In this mode a pressure switch is engaged to sense the oxygen storage
tank pressure. Once that pressure reaches about 60 PSIG (420 kPa) the
generator will stop cycling. When the pressure in the storage tank falls to about
45 PSIG (310 kPa), the generator will begin to cycle again attempting to refill the
storage tank. While in this mode, the light inside the control switch will be on
whenever the unit is cycling.
Oxygen Pressure Gauge -
This gauge indicates the pressure of the Oxygen in the storage tank. While this
level can vary between 0 PSIG and 65 PSIG (0 kPa and 450 kPa), it should
remain between 40 PSIG and 65 PSIG (280 kPa and 450 kPa) during normal
operation. The exception, of course, is when the unit is first started and it needs
to fill the storage tank. This does not take more than a few minutes.
Summary of Contents for OG-75
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Page 26: ...Effective April 2006 23 Process Flow Schematic...
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Page 29: ...Effective April 2006 26 External Components Drawing 22 G G 22...
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