OGSI OG-15, Installation, Operation And Maintenance Manual, Page: 27 / 57

Effective 07/2014 23
Internal Components Description
Terminal Assembly
Strip The terminal strip distributes electrical power as required to the compressor and
control components of the machine.
Sieve Beds
These beds contain the molecular sieve that performs the air separation process.
They are spring loaded to prevent settling and should not ever need to be opened. If
the sieve becomes contaminated, the beds can be easily replaced.
Heat Exchanger
The heat exchanger (Delta Twist) is positioned in front of the cooling fan and
delivers the feed air from the air compressor to the valve block. Using this
proprietary tube design, significant air temperature reduction occurs before the air
enters the sieve beds, improving overall performance.
Air Compressor
The air compressor supplies the feed air to the sieve beds. It is held in place by four
bolted rubber feet and can be easily replaced when necessary. It should work as
designed for a minimum of 10,000 hours and will last 20,000 hours in
many cases.
Circuit Board
The circuit board controls the operation of the flow controlling valves. While one
valve coil is energized, the other is not.
Valve Block
The valve block holds the main valves that control the direction of airflow in the
machine. These are the feed and waste valves for each bed. They direct feed air to
each bed during oxygen production and waste nitrogen through the muffler to
regenerate the sieve. The cycle continues while the unit operates.
Inlet Air Filter
The air filter keeps dust and dirt from entering the compressor and needs to be
changed twice a year in normal environments to maintain the unit’s performance. It
should be changed more often in dirty, oily areas.
Safety Relief Valve
This valve is in place to ensure that the oxygen sieve tank does not exceed maximum
pressure. It will only open in the event of a serious malfunction.
Cooling Fan
The cooling fan is used to draw air into the unit and to remove heat from the
compressor. The fan runs while the unit operates.
Power Cord
The power cord used on 115 VAC/60 Hz electrical systems comes with a three-
pronged ground fault protected plug. For 230 VAC , a plug of local
configuration will need to be installed by the end-user.
Vent Holes These vent holes allow cooling air to enter the enclosure.
Exhaust Muffler
The exhaust muffler is used to silence the exhaust noise that occurs as a result of the
sieve beds rapidly depressurizing to atmospheric pressure, releasing nitrogen. For
installations where a lower noise level is required,
OGSI offers an optional
alternative muffler system that can decrease the emitted noise even further.
Air Regulator
(OG-15E and OG-20E
Compressor-less)
The air regulator controls the air pressure going into valve block.