Weinmann OXYMAT 3 Servicing And Repair Instructions page 7

Part of the oxygen flows via the flushing nozzle into
the other ADS container for flushing.
During the oxygen enrichment process, the area
where adsorption of the nitrogen occurs will shift
from the beginning of the ADS container towards
the end. Before reaching the end of the container,
the pressure between the two ADS containers is
compensated via the pressure compensating
valve. Parallel to this, the pressure escapes via the
noise suppressor and the other ADS container is
opened. The same procedure then takes place
there.
Via pressure compensation, the remaining oxygen
passes to the other ADS container, compression
energy is saved, and blow-off noise is reduced.
The nitrogen adsorbed in the first ADS container is
desorbed as a result of the pressure drop when the
valve is opened and is expelled via the noise
suppressor.
Displays and alarms
• If a
leak that is likely to cause a drop in the oxy-
occurs after the internal self-
gen concentration
test, this situation is indicated immediately by a
visual warning signal (
• If the
compressor output falls off
signal is displayed (
acoustic warning (intermittent tone) sounds.
Further information on displays and alarms can be found in Chapter "6.1 Visual and acoustic signals from
OXYMAT 3" on page 19".
lamp).
yellow
, a visual alarm
lamp flashes) and an
red
In order to attain adequate desorption of the mo-
lecular sieve, part of the oxygen extracted in one
ADS container is continuously passed to the other
ADS container via the flushing nozzle.
The oxygen stored in the oxygen tank at an over-
pressure of up to 1.7 bar is reduced to 0.6 bar via
the pressure-reducer.
The pressure sensor monitors this system pressure.
If the pressure falls below 0.5 bar or rises above
2.5 bar, the system activates visual and acoustic
alerts.
At an overpressure of around 0.6 bar, the oxygen
flows towards the outlet of the appliance.
The prescribed flow is set on the dosage monitor
or on the flowmeter. It then flows to the patient via
the nasal cannula.
• The green lamp indicates that the system is op-
erational.
• In the event of a power failure, an intermittent
warning signal will sound and the red lamp
will flash. The green lamp is not illuminated.
Functional description
7